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  Subjects -> SPORTS AND GAMES (Total: 199 journals)
Showing 1 - 3 of 3 Journals sorted alphabetically
Acta Facultatis Educationis Physicae Universitatis Comenianae     Open Access   (Followers: 3)
Acta Kinesiologiae Universitatis Tartuensis     Open Access   (Followers: 1)
ACTIVE : Journal of Physical Education, Sport, Health and Recreation     Open Access   (Followers: 22)
Advances in Physical Education     Open Access   (Followers: 10)
African Journal of Cross-Cultural Psychology and Sport Facilitation     Full-text available via subscription   (Followers: 5)
Ágora para la Educación Física y el Deporte     Open Access  
Al-Rafidain Journal For Sport Sciences     Open Access  
Al.Qadisiya journal for the Sciences of Physical Education     Open Access  
American Journal of Sports Science and Medicine     Open Access   (Followers: 36)
Annals of Applied Sport Science     Open Access   (Followers: 8)
Arena-Journal of Physical Activities     Open Access   (Followers: 2)
Arquivos em Movimento     Open Access   (Followers: 1)
Arrancada     Open Access  
Asia Pacific Journal of Sport and Social Science     Hybrid Journal   (Followers: 4)
Asian Journal of Sport and Exercise Psychology     Open Access   (Followers: 1)
Australian and New Zealand Sports Law Journal     Full-text available via subscription   (Followers: 7)
Baltic Journal of Sport and Health Sciences     Open Access   (Followers: 2)
Berkeley Journal of Entertainment and Sports Law     Open Access   (Followers: 5)
Biomedical Human Kinetics     Open Access   (Followers: 8)
BMC Sports Science, Medicine and Rehabilitation     Open Access   (Followers: 33)
Cerdas Sifa Pendidikan : Sport Education     Open Access  
Ciencia y Deporte     Open Access   (Followers: 1)
Citius, Altius, Fortius     Open Access  
Clinical Journal of Sport Medicine     Hybrid Journal   (Followers: 34)
Coaching Psykologi : The Danish Journal of Coaching Psychology     Open Access   (Followers: 3)
College Athletics and The Law     Hybrid Journal   (Followers: 1)
Communication & Sport     Hybrid Journal   (Followers: 7)
Comparative Exercise Physiology     Hybrid Journal   (Followers: 21)
Conexões     Open Access  
Corpoconsciência     Open Access  
Cuadernos de Psicologia del Deporte     Open Access  
Cultura, Ciencia y Deporte     Open Access   (Followers: 1)
Curriculum Studies in Health and Physical Education     Hybrid Journal   (Followers: 9)
Educación Física y Ciencia     Open Access  
Educación física y deporte     Open Access   (Followers: 1)
eJRIEPS : Ejournal de la recherche sur l'intervention en éducation physique et sport     Open Access  
European Journal for Sport and Society     Hybrid Journal   (Followers: 1)
European Journal of Sport Science     Hybrid Journal   (Followers: 64)
Facta Universitatis, Series : Physical Education and Sport     Open Access   (Followers: 4)
FairPlay, Revista de Filosofia, Ética y Derecho del Deporte     Open Access  
Footwear Science     Hybrid Journal   (Followers: 3)
Forum for Idræt, Historie og Samfund     Open Access  
Forum Kinder- und Jugendsport : Zeitschrift für Forschung, Transfer und Praxisdialog     Hybrid Journal  
Frontiers in Sports and Active Living     Open Access   (Followers: 2)
Gelanggang Pendidikan Jasmani Indonesia     Open Access  
German Journal of Exercise and Sport Research : Sportwissenschaft     Hybrid Journal   (Followers: 2)
Indonesian Journal of Sport Management     Open Access   (Followers: 3)
International Journal of Applied Exercise Physiology     Open Access   (Followers: 52)
International Journal of Computer Science in Sport     Open Access   (Followers: 5)
International Journal of Exercise Science     Open Access   (Followers: 24)
International Journal of Golf Science     Open Access   (Followers: 1)
International Journal of Kinesiology and Sports Science     Open Access   (Followers: 15)
International Journal of Performance Analysis in Sport     Full-text available via subscription   (Followers: 21)
International Journal of Recreation and Sports Science     Open Access   (Followers: 3)
International Journal of Science Culture and Sport     Open Access  
International Journal of Sport and Exercise Psychology     Hybrid Journal   (Followers: 35)
International Journal of Sport Communication     Hybrid Journal   (Followers: 6)
International Journal of Sport Policy     Hybrid Journal   (Followers: 11)
International Journal of Sport, Exercise & Training Sciences     Open Access   (Followers: 1)
International Journal of Sports Marketing and Sponsorship     Hybrid Journal  
International Journal of Sports Science     Open Access   (Followers: 24)
International Journal of Sports Science & Coaching     Hybrid Journal   (Followers: 32)
International Journal of the History of Sport     Hybrid Journal   (Followers: 18)
International Review for the Sociology of Sport     Hybrid Journal   (Followers: 21)
International Review of Sport and Exercise Psychology     Hybrid Journal   (Followers: 22)
International Sport Coaching Journal     Hybrid Journal   (Followers: 7)
International Sports Law Journal     Hybrid Journal   (Followers: 3)
International Turfgrass Society Research Journal     Free   (Followers: 1)
Isokinetics and Exercise Science     Hybrid Journal   (Followers: 10)
Jeffrey S. Moorad Sports Law Journal     Open Access   (Followers: 1)
Jendela Olahraga     Open Access  
Journal for the Measurement of Physical Behaviour     Hybrid Journal   (Followers: 1)
Journal of Amateur Sport     Open Access   (Followers: 1)
Journal of Applied Sport Management: Research that Matters     Full-text available via subscription   (Followers: 5)
Journal of Athlete Development and Experience     Open Access  
Journal of Athletic Enhancement     Hybrid Journal   (Followers: 6)
Journal of Exercise Science & Fitness     Open Access   (Followers: 24)
Journal of Global Sport Management     Hybrid Journal   (Followers: 1)
Journal of Hospitality, Leisure, Sport & Tourism Education     Full-text available via subscription   (Followers: 2)
Journal of Human Kinetics     Open Access   (Followers: 15)
Journal of Human Sport and Exercise     Open Access   (Followers: 13)
Journal of Intercollegiate Sport     Open Access   (Followers: 5)
Journal of Motor Learning and Development     Hybrid Journal  
Journal of Orthopaedic & Sports Physical Therapy     Full-text available via subscription   (Followers: 67)
Journal of Physical Activity Research     Open Access   (Followers: 3)
Journal of Physical Education and Human Movement     Open Access  
Journal of Physical Education and Sport Sciences     Open Access   (Followers: 2)
Journal of Physical Education and Sports     Open Access   (Followers: 4)
Journal of Physical Education and Sports Science     Open Access  
Journal of Physical Education Health and Sport     Open Access   (Followers: 1)
Journal of Physical Education, Recreation & Dance     Full-text available via subscription   (Followers: 12)
Journal of Policy Research in Tourism, Leisure and Events     Hybrid Journal   (Followers: 7)
Journal of Science and Cycling     Open Access   (Followers: 9)
Journal of Science and Medicine in Sport     Hybrid Journal   (Followers: 36)
Journal of Science in Sport and Exercise     Hybrid Journal   (Followers: 4)
Journal of Sport & Tourism     Hybrid Journal   (Followers: 7)
Journal of Sport and Health Science     Open Access   (Followers: 23)
Journal of Sport History     Full-text available via subscription   (Followers: 12)
Journal of Sport Psychology in Action     Hybrid Journal   (Followers: 13)
Journal of Sport Sciences and Fitness     Open Access   (Followers: 13)
Journal of Sports Economics     Hybrid Journal   (Followers: 6)
Journal of Sports Media     Full-text available via subscription   (Followers: 4)
Journal of Sports Medicine and Allied Health Sciences : Official Journal of the Ohio Athletic Trainers Association     Open Access   (Followers: 1)
Journal of Sports Medicine and Therapy     Open Access  
Journal of Sports Science and Medicine     Open Access   (Followers: 22)
Journal of the Philosophy of Sport     Hybrid Journal   (Followers: 6)
Journal of Tourism, Hospitality and Sports     Open Access   (Followers: 3)
Juara : Jurnal Olahraga     Open Access  
Jurnal Abdimas     Open Access  
Jurnal Keolahragaan     Open Access  
Jurnal Sport Science     Open Access   (Followers: 1)
Kinesiology : International Journal of Fundamental and Applied Kinesiology     Open Access  
Kinesiology Review     Hybrid Journal   (Followers: 3)
Laisvalaikio Tyrimai     Open Access   (Followers: 2)
Managing Sport and Leisure     Hybrid Journal   (Followers: 1)
Marquette Sports Law Review     Open Access   (Followers: 1)
Martial Arts Studies     Open Access  
Materiales para la historia del deporte     Open Access  
mensch & pferd international     Full-text available via subscription  
MHSalud : Movimiento Humano y Salud     Open Access  
Movement & Sport Sciences : Science & Motricité     Full-text available via subscription   (Followers: 1)
New Approaches in Sport Sciences     Open Access  
NINE : A Journal of Baseball History and Culture     Full-text available via subscription   (Followers: 4)
Open Access Journal of Sports Medicine     Open Access   (Followers: 14)
Open Sports Sciences Journal     Open Access  
Orthopaedic Journal of Sports Medicine     Open Access   (Followers: 14)
Pace Intellectual Property, Sports & Entertainment Law Forum     Open Access   (Followers: 4)
PALAESTRA : Adapted Sport, Physical Education, and Recreational Therapy     Full-text available via subscription   (Followers: 3)
Perceptual and Motor Skills     Full-text available via subscription   (Followers: 8)
Physical Culture and Sport. Studies and Research     Open Access   (Followers: 8)
Physical Education of Students     Open Access  
Physician and Sportsmedicine     Open Access   (Followers: 5)
Podium Sport, Leisure and Tourism Review     Open Access   (Followers: 2)
Polish Journal of Sport and Tourism     Open Access  
Proceedings of the Institution of Mechanical Engineers Part P: Journal of Sports Engineering and Technology     Hybrid Journal   (Followers: 4)
Qualitative Research in Sport and Exercise     Hybrid Journal   (Followers: 20)
Qualitative Research in Sport, Exercise and Health     Hybrid Journal   (Followers: 18)
Quality in Sport     Open Access  
Quest     Hybrid Journal   (Followers: 3)
RBFF - Revista Brasileira de Futsal e Futebol     Open Access  
RBNE - Revista Brasileira de Nutrição Esportiva     Open Access   (Followers: 1)
Reabilitacijos Mokslai : Slauga, Kineziterapija, Ergoterapija     Open Access   (Followers: 2)
Research on ٍEducational Sport     Open Access  
Research Quarterly for Exercise and Sport     Hybrid Journal   (Followers: 2)
Retos : Nuevas Tendencias en Educación Física, Deportes y Recreación     Open Access  
Revista Andaluza de Medicina del Deporte     Open Access   (Followers: 2)
Revista Brasileira do Esporte Coletivo     Open Access  
Revista de Artes Marciales Asiáticas     Open Access  
Revista de Psicología del Deporte     Open Access  
Revista Iberoamericana de Ciencias de la Actividad Física y el Deporte     Open Access  
Revista Intercontinental de Gestão Desportiva     Open Access  
Revista Internacional de Medicina y Ciencias de la Actividad Física y del Deporte : International Journal of Medicine and Science of Physical Activity and Sport     Open Access   (Followers: 1)
RICYDE. Revista Internacional de Ciencias del Deporte     Open Access  
Scandinavian Journal of Sport and Exercise Psychology     Open Access   (Followers: 3)
Science and Medicine in Football     Hybrid Journal   (Followers: 1)
Seton Hall Journal of Sports and Entertainment Law     Open Access   (Followers: 3)
SIPATAHOENAN : South-East Asian Journal for Youth, Sports & Health Education     Open Access  
Soccer & Society     Hybrid Journal   (Followers: 10)
Sociology of Sport Journal     Hybrid Journal   (Followers: 12)
Spor Bilimleri Araştırmaları Dergisi     Open Access  
Spor Bilimleri Dergisi / Hacettepe Journal of Sport Sciences     Open Access  
Spor Eğitim Dergisi     Open Access  
Spor ve Performans Araştırmaları Dergisi / Ondokuz Mayıs University Journal of Sports and Performance Researches     Open Access  
Sport and Art     Open Access   (Followers: 1)
Sport and Fitness Journal     Open Access   (Followers: 4)
Sport History Review     Hybrid Journal   (Followers: 10)
Sport i Turystyka : Środkowoeuropejskie Czasopismo Naukowe     Open Access  
Sport in History     Hybrid Journal   (Followers: 10)
Sport Journal     Open Access   (Followers: 12)
Sport Management Education Journal     Hybrid Journal   (Followers: 5)
Sport Science and Health     Open Access   (Followers: 1)
Sport Science Review     Open Access   (Followers: 13)
SPORT TK-Revista EuroAmericana de Ciencias del Deporte     Open Access  
Sport, Business and Management : An International Journal     Hybrid Journal   (Followers: 8)
Sport, Exercise, and Performance Psychology     Full-text available via subscription   (Followers: 11)
Sporting Traditions     Full-text available via subscription   (Followers: 2)
Sportis. Scientific Journal of School Sport, Physical Education and Psychomotricity     Open Access   (Followers: 1)
SPORTIVE : Journal Of Physical Education, Sport and Recreation     Open Access  
Sportphysio     Hybrid Journal  
Sports     Open Access   (Followers: 3)
Sports Coaching Review     Hybrid Journal   (Followers: 3)
Sports Law and Governance Journal     Open Access   (Followers: 1)
Sports Medicine International Open     Open Access   (Followers: 2)
Sports Technology     Hybrid Journal   (Followers: 3)
Sportverletzung · Sportschaden     Hybrid Journal   (Followers: 2)
Sri Lankan Journal of Sports and Exercise Medicine     Open Access  
Strategies : A Journal for Physical and Sport Educators     Hybrid Journal   (Followers: 3)
The Sport Psychologist     Hybrid Journal   (Followers: 7)
Therapeutic Recreation Journal     Full-text available via subscription  
Timisoara Physical Education and Rehabilitation Journal     Open Access   (Followers: 1)
Translational Journal of the American College of Sports Medicine     Hybrid Journal  
Turkish Journal of Sport and Exercise     Open Access  
Türkiye Spor Bilimleri Dergisi / Turkish Journal of Sports Science     Open Access  
Ulusal Spor Bilimleri Dergisi / Journal of National Sport Sciences     Open Access  
UNLV Gaming Research & Review Journal     Open Access   (Followers: 2)
Video Journal of Sports Medicine     Open Access  
Zeitschrift für Sportpsychologie     Hybrid Journal  
Слобожанський науково-спортивний вісник     Open Access  

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Journal of Human Kinetics
Journal Prestige (SJR): 0.516
Citation Impact (citeScore): 1
Number of Followers: 15  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1640-5544 - ISSN (Online) 1899-7562
Published by Sciendo Homepage  [370 journals]
  • Evidence‐Based Recovery in Soccer – Low‐Effort
           Approaches for Practitioners

    • Abstract: Strategies to improve recovery are widely used among soccer players at both amateur and professional levels. Sometimes, however, recovery strategies are ineffective, improperly timed or even harmful to players. This highlights the need to educate practitioners and athletes about the scientific evidence of recovery strategies as well as to provide practical approaches to address this issue. Therefore, recent surveys among soccer athletes and practitioners were reviewed to identify the recovery modalities currently in use. Each strategy was then outlined with its rationale, its physiological mechanisms and the scientific evidence followed by practical approaches to implement the modality. For each intervention, practical and particularly low-effort strategies are provided to ensure that practitioners at all levels are able to implement them. We identified numerous interventions regularly used in soccer, i.e., sleep, rehydration, nutrition, psychological recovery, active recovery, foam-rolling/massage, stretching, cold-water immersion, and compression garments. Nutrition and rehydration were classified with the best evidence, while cold-water immersion, compression garments, foam-rolling/massage and sleep were rated with moderate evidence to enhance recovery. The remaining strategies (active recovery, psychological recovery, stretching) should be applied on an individual basis due to weak evidence observed. Finally, a guide is provided, helping practitioners to decide which intervention to implement. Here, practitioners should rely on the evidence, but also on their own experience and preference of the players.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • A Study Comparing Gait and Lower Limb Muscle Activity During Aquatic
           Treadmill Running With Different Water Depth and Land Treadmill Running

    • Abstract: Aquatic treadmill running is a partial weight-bearing exercise for rehabilitation. The purpose of this study was to investigate the surface electromyography activities of the rectus femoris, tibialis anterior, biceps femoris and medial head of gastrocnemius, and gait kinematics during aquatic treadmill running in water levels at waist, mid-thigh and mid-shin and on land. Seventeen healthy subjects (9 males and 8 females) were recruited by convenience sampling. Participants performed 2-min aquatic treadmill running at a specific speed for each water depth. The test speed was selected based upon the speed that elicited 110 steps per min. The surface electromyography data of lower limb muscles and the joint angles at three different water depths and on land were collected to evaluate the muscle activity and gait kinematics using a waterproofed surface electromyography system and inertial measurement unit for each muscle. Results showed that rectus femoris electromyography was different between depths during the swing and stance phases. Likewise, biceps femoris and tibialis anterior electromyography were different between depths for the swing phase. However, it was not the case for gastrocnemius electromyography. Peak flexion angles in both left and right hips were different between depths. A significant increase in a stance/swing ratio was observed with rising water depths. Water depth influenced muscle activity as well as kinematics. Aquatic treadmill running in the mid-thigh level should be further evaluated for its effectiveness, training value and applicability.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • Effects of Postactivation Performance Enhancement on the Vertical Jump in
           High-Level Volleyball Athletes

    • Abstract: The objective of this study was to evaluate the effects of a training session with and without an intervention of postactivation performance enhancement (PAPE) on countermovement jump (CMJ) height, perceived recovery status (PRS), and ratings of perceived exertion (RPEs), followed by a specific volleyball training session. The sample consisted of sixteen professional male volleyball players, with an average age of 26.8±6.1 years and average height of 195.9±6.7 cm, randomly divided into a group with PAPE intervention (GPAPE) (n=8), and a control group (CTRL) without PAPE intervention (n=8). The control group carried out the training session with plyometric exercises, and the GPAPE added conditioning protocols for PAPE to plyometric training, followed by a technical tactical volleyball session. At the end of the training session, there was an increase of 16.3% in the height of the CMJ in the GPAPE, while the CTRL showed a decrease of 5% in the height of the CMJ. PRS and RPE variables did not differ between the groups. It was concluded that PAPE had a positive effect on the height of the vertical jump after plyometric training, which was maintained until the end of the technical and tactical volleyball session.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • The Pre-Exhaustion Method Does Not Increase Muscle Activity in Target
           Muscle During Strength Training in Untrained Individuals

    • Abstract: This study investigated the effects of the pre-exhaustion method on electromyographic activity (root mean square and median frequency) at different interval sets. Twenty adults with little or no experience in strength training performed the seated row exercise until muscular failure, with or without completing a previous pre-exhaustion set in a pullover exercise. Surface electrodes were placed over the latissimus dorsi, teres major, biceps brachii, and posterior deltoid muscles of the dominant side. The results showed no effect of pre-exhaustion on EMG activity of latissimus dorsi target muscle for any interval sets. Regarding median frequency, our results showed a consistent decrease throughout the sets (p>0.05). Also, our results revealed a decrease in posterior deltoid median frequency with pre-exhaustion (p=0.001). We conclude that the pre-exhaustion method seems ineffective in increasing the EMG activity of the desired muscle throughout all repetitions of strength training. Furthermore, pre-exhaustion seems to be a good way to increase fatigue in the posterior deltoid muscle.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • Validity and Reliability of the Smart Groin Trainer for Measuring Hip
           Adduction Strength

    • Abstract: We analyzed the Smart Groin Trainer device's validity and reliability to measure the isometric hip adduction strength during the adductor squeeze strength test. Fifteen professional soccer players (25.33±4.06 years) and fifteen university students (21.60±1.76 years) participated in this study. All participants performed the squeeze strength test using two portable dynamometers: Smart Groin Trainer and Globus Ergometer. Three maximal isometric hip adduction contractions lasting 5s, interspersed by 3min rest intervals, were performed. Reliability was analyzed with intraclass correlation coefficients, standard error of measurements, and minimal detectable change. The absolute percent error and inter-device accuracy were also analyzed. Correlation analysis assessed the inter-device concurrent validity. The results found no significant differences (p>0.05) between devices in the squeeze strength test values in soccer players and university students. Inter-device comparisons revealed excellent levels of reliability and accuracy in soccer players. Concurrent validity measures revealed strong inter-device relationships in soccer players (r=0.89) and very strong relationships in university students (r=0.99). Intra-device analysis using the Smart Groin Trainer showed excellent relative and absolute reliability in tested soccer players. Our data demonstrated excellent levels of agreement between both dynamometers during the squeeze strength test, suggesting the Smart Groin Trainer as a valid, reliable, and accurate device to measure isometric hip adduction strength.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • Assessing the Sprint Force-Velocity Profile in International Football
           Players with Cerebral Palsy: Validity, Reliability and Sport Class’
           Profiles

    • Abstract: This study assessed and described the Sprint Force-velocity (SFv) profile, and its validity and reliability in international cerebral palsy (CP) football players. Twenty international male CP football players (age: 26.9±7.4) performed a 30-m sprint, a vertical jump (CMJ), a change of direction (MAT), a dribbling and an intermittent endurance (Yo-YoIR1) test. The SFv profile and physical performance variables were shown according to the players’ sport class with the estimation of the effect sizes between classes. The SFv showed high reliability (ICC=0.77 to 0.99; SEM=0.89 to 8.66%). Validity for the SFv was provided by its positive correlation with the players’ sport class (r=0.53 to 0.75; p=.02 to <.01) and the rest of the physical performance tests (r=0.45 to 0.99; p=.04 to <.01). The RFmax was the main SFv profile variable that explained players’ performance in the rest of the tests (β=0.77 to 1.0; p<.05; R2=0.59 to 0.99). The SFv profile seems to be an efficient test to assess international CP football players’ physical performance. This provides information about the players’ individual sprint mechanical characteristics and their sprint strengths and weaknesses, allowing coaches and conditioning trainers to individualize their training interventions to optimize sprint performance.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • Prevalence of Dehydration and the Relationship with Fluid Intake and
           Self‐Assessment of Hydration Status in Czech First League Soccer Players
           

    • Abstract: The objective of this cross-sectional study was to evaluate the hydration status of Czech First League soccer players, and to compare the reported fluid intake, perceived fluid intake and thirst sensation of euhydrated (EU) and dehydrated (DE) players. The study involved 124 Czech male professional soccer players (age 25.2±5.0 years) participating in annual winter, pre-season laboratory testing. Hydration status was assessed based on urine specific gravity (USG), euhydration was set at USG≤1.020. Fluid intake and thirst perception were evaluated by a questionnaire. The sample mean for USG was 1.021±0.008, 56% of players were dehydrated. Reported daily fluid intake was significantly (p<0.001, d=0.95, large effect) higher in EU compared to DE players. Daily fluid intake negatively correlated with USG (rS=-0.46, p<0.001, medium effect). The fluid intake perception score was significantly (p=0.005, d=0.54, medium effect) better in EU compared to DE players. Reported intake perception scores negatively correlated with USG (rS=-0.32, p<0.001, medium effect). However, there was no correlation (rS=-0.09, p=0.34, trivial effect) between thirst perception scores and USG. Thirst perception scores were not significantly different between EU and DE players (p=0.35, d=0.18, trivial effect). Our results indicated that self-assessment of both daily fluid intake and perceived fluid intake matched with objective hydration status, while self-assessment of thirst perception was not an appropriate indicator of hydration status in elite soccer players.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • Cognitive Factors in Elite Handball: Do Players’ Positions Determine
           their Cognitive Processes'

    • Abstract: For an athlete to be successful at the professional level, he or she should be characterized by extraordinary preparation in four areas: physical, technical, cognitive (related to game strategy, perception, and decision-making), and emotional (coping, emotional control). This study aimed to determine the level of selected cognitive traits in handball players while considering their sports level and assigned position on the court. Fifty handball players participated in the study. Participants consisted of 35 national team players, six first-division players, and nine second-division players. There were no significant differences between players from the elite (national team) and the sub-elite (I and II divisions) group. The results identified major differences in selective attention and short-term memory between handball players assigned to different positions (goalkeepers, compared to players in other positions, had lower attention and short-term memory). Thus, it is possible to develop a more effective psychological training program. However, it must be remembered that the results showed great variability among handball players. With this in mind, individual differences should be taken into account when planning psychological interventions.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • Post-Activation Performance Enhancement in Sprinters: Effects of Hard
           Versus Sand Surfaces

    • Abstract: This study aimed to compare the post-activation performance enhancement induced by successive drop-jumps performed on hard and sand surfaces in sprint and jump performance of top-level sprinters. Athletes were tested on two occasions. On each visit they were allocated to one of the experimental protocols, which consisted of performing 2x5 drop-jumps from a box with the height of 60-cm on hard or sand surfaces in randomized order, seven days apart. Prior to and 7 and 15-min after executing drop-jumps, sprinters performed countermovement jumps and 60-m sprint tests. Differences between sprinting splits and surfaces were assessed using a two-way analysis of variance with repeated measures. No significant differences in jump height or sprint time were observed (p>0.05), regardless of the surface used (i.e., hard or sand) during the conditioning activity (effect sizes [95% confidence intervals] ranging from 0.01 [-0.84;0.84] to 0.44 [-0.42;1.27]). Performing drop-jumps on sand or hard surfaces immediately before maximum sprinting bouts does not provide any advantage or disadvantage to top-level sprinters. Sprint coaches may prescribe short-plyometric training activities on sand surfaces even close to competitions, bearing in mind that this strategy will not compromise sprint-specific performance.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • Addition of in‐Play Cooling Breaks During Intermittent Exercise while
           Wearing Lacrosse Uniforms in the Heat Attenuates Increases in Rectal
           Temperature

    • Abstract: To reduce the risk of heat-related illness, appropriate body cooling strategies are needed during men’s lacrosse competitions in hot-humid environments. The current study investigated whether additional in-play cooling breaks would attenuate the core (rectal) body temperature rise during exercise designed to mimic the activity patterns of a men’s lacrosse match while wearing uniform in hot-humid environments. In randomized and counterbalanced order, ten physically active men completed two experimental trials comprising four quarters of 15-min intermittent cycling exercises separated by a 10-min simulated half-time break and two 2-min quarter breaks in a climate chamber (35°C, 50% relative humidity). The two trials included a regular simulated match condition (REG) and a water break time out condition (WBTO) that included additional 2-min breaks 7.5-min into each quarter. Rectal temperature was significantly lower (p=0.017) in the WBTO condition (38.23±0.23°C) compared with the REG condition (38.50±0.46°C) at the end of the 4th quarter. In addition, ratings of perceived exertion, thermal sensation, heart rate and the physiological strain index were significantly lower (all p<0.05) in the WBTO condition compared with the REG condition. The current results indicated that, even when wearing lacrosse uniforms, the implementation of WBTO attenuated the core body temperature elevation only in the latter stages of an intermittent cycling exercise protocol designed to mimic the exercise pattern of a men’s lacrosse match. Therefore, WBTO may provide a feasible and effective cooling strategy for lacrosse players to reduce the risk of heat-illness.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • Inter-Limb Muscle Property Differences in Junior Tennis Players

    • Abstract: The goal of this study was to investigate side-to-side differences and asymmetries regarding muscle characteristics in young tennis players. Thirty-four participants performed contractile property measurements (stiffness, tone, elasticity and time to relaxation) on the dominant and non-dominant extremities including nine muscle groups involved in the kinetic chain of main tennis strokes. Significant differences (p≤0.05) and small-to-moderate effect sizes for greater stiffness and tone were found for the dominant biceps femoris (-11.1% and -5.6%; ES=0.53 and 0.54) and the non-dominant vastus medialis (5.4% and 3.2%; ES=-0.33 and -0.41), while greater tone was present in the non-dominant pectoralis major (4.0%; ES=-0.56). Time to relaxation was increased in the dominant biceps femoris (10.3%; ES=-0.58), the non-dominant pectoralis major (5.1%; ES=-0.56) and the gastrocnemius (9.1%; ES=-0.5). The non-dominant infraspinatus and dominant rectus abdominis showed greater elasticity than contralateral muscles (9.9% and -8.0%; ES=-0.58 and 0.6, respectively). These results reflect the existence of small-to-moderate differences when comparing side-to-side values of contractile characteristics in a small amount of the muscle groups tested. However, passive measurements of a relaxed muscle do not seem to fully reflect possible adaptation and changes derived from gameplay in young tennis players.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • Hand Grip Strength vs. Locomotor Efficiency in Sitting Volleyball Players

    • Abstract: The objective of this paper was to determine the relationship between hand grip strength and movement time (locomotor efficiency in a seated position using the upper and lower extremities) in sitting volleyball players. In addition, a comparison was made between the velocity curves for forward and backward locomotion. Nine male members of the sitting volleyball team participated in the study. Hydraulic and spring manual dynamometers were used to measure hand grip strength. Movement times were registered for distances of 1, 2, 3, 4, 5, 6 and 10-m with the use of the Smart Speed System photocells. Significant relationships between hand grip strength of the left (rs=-0.78) and right (rs=-0.73) hands and the forward movement time over a distance of 1-m were found. Hand grip strength had no significant relationship with either forward movement times at other distances or backward movement times. Results suggest that hand strength is linked to locomotor efficiency of sitting volleyball players. High hand grip strength makes the start easier by pushing away from the ground with the upper limbs.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • Changes in Heart Rate Variability and Post‐Exercise Blood Pressure from
           Manipulating Rest Intervals Between Sets of Resistance Training

    • Abstract: The purpose of this study was to compare blood pressure and heart rate variability responses in physically active men after performing resistance training sessions with rest intervals of 1 min, 2 min and 3 min. Eighteen men (age, 21.6±1.1 years; body mass, 74.1±8.1 kg; body height, 175.3±7.1 cm) who performed 180min of physical activity per week participated in this study. After determining the 15RM loads for the squat, bench press, bent-over row and deadlift, participants performed a resistance training session. Participants performed three resistance training protocols in randomized counterbalanced order. Each experimental protocol comprised different rest intervals between sets of resistance training exercises (1min, 2min or 3min). During each experimental session, participants performed three sets with a 15RM load. Blood pressure and heart rate variability were measured before and for 2h after each session. The results demonstrated a greater blood pressure (p<0.05) reduction with a longer rest interval. There was no statistically significant difference in heart rate variability changes between groups. These results indicate that 2min and 3min rest intervals while using a 15RM load provide the best stimulus for a blood pressure reduction response after a resistance training session. Our findings suggest that strength and conditioning professionals should prescribe 2min or 3min rest intervals when resistance training is performed with a 15RM load if the aim is to obtain an acute reduction in blood pressure after a resistance training session.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • The Importance of Posture And Body Composition for the Stability and
           Selected Motor Abilities of Professional Handball Players

    • Abstract: The aim of the research was to analyze body composition, body posture and postural stability of professional male handball players and to determine the differences between players with correct and incorrect body posture, considering power of the lower limbs and agility, speed, and change of direction deficit. The study comprised 16 professional handball players. Body composition analysis was performed using the method of electrical bioimpedance. Body posture was examined using the Diers formetric III 4D optoelectronic method. Postural stability was tested via the Biodex Balance System. Players performed the following fitness tests assessing lower limb muscle power (LP, HS, CMJ), linear speed (SLS 20 m), and COD speed (Zig-Zag test, COD deficit). Only 31.25% of players demonstrated body posture with correct physiological curvatures, while 68.75% showed changes in body asymmetry. The group with correct body posture performed better in SLS 20m than the group with incorrect posture, yet in the Zig-Zag agility test, the difference in the results was not significant and this affected the COD deficit, which was higher. The vast majority of participants demonstrated postural defects and incorrect physiological curvatures of the spine. The occurrence of scoliotic posture was also observed. The body deflection angles indicated that athletes’ postural stability was good. However, it is worth noting that the majority demonstrated a tendency towards asymmetrical body deflections to the right or to the left, backwards direction. One-sided sports specialization leads to disturbances in the statics of the body, therefore, it becomes necessary to include postural re-education exercises in training.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • Movement Patterns of Polish National Paralympic Team Wheelchair Fencers
           with Regard to Muscle Activity and Co-Activation Time

    • Abstract: The aim of this study was to determine muscle co-activation and muscle activity time using EMG in Paralympic wheelchair fencers categorized into two disability-level groups: A (n= 7) and B (n= 9). The study was carried out with the use of a 16-channel EMG system. The surface EMG electrodes were placed on the fencer’s body along nine channels: arm muscles - deltoideus middle head (DEL), triceps brachii (TRI) and biceps brachii (BC); forearm muscles - extensor carpi radialis longus (ECR), flexor carpi radialis (FCR); postural (abdominal and back) muscles - the right and the left external oblique abdominal (EOA RT and LT) and latissimus dorsi (LD RT and LT). To assess the relative level of co-activation (simultaneous contraction of both muscles) for the TRI-BC, ECR-FCR, LD RT-EDA RT and LD LT-EDA LT muscle pairs, the co-activation index (CI) was calculated. The collected data were processed using Jamovi. The study hypotheses were verified at the level of significance of p≤0.05 (Welch’s t-test). The normal distribution of analyzed statistical features was checked with the Shapiro-Wilk test. The analysis of muscle activation time, as a percent ratio of three attempts executed in a series, confirmed the study assumptions. Fencers from Group A had a shorter activation time in all tested muscles, with the exception of the ECR (58.24), than fencers from Group B. This confirms that the activation of antagonist muscles representing a centrally programmed anticipatory mechanism stabilizing technical actions was particularly intensified in Group A fencers. The study results indicate that the standard co-activation index (CI) of key muscles involved in wheelchair fencing ranges from 48 to 51%.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • Neuromuscular Impact of Acute Hypertrophic Resistance Loading With and
           Without Blood-Flow Restriction

    • Abstract: Exploring acute neuromuscular fatigue induced by different modalities of resistance exercise would help understand the adaptation subsequent to specific training programs. Therefore, we investigated the acute impact of high-intensity and low-intensity blood flow-restricted resistance exercise on the development of explosive torque throughout the torque-time curve. Seventeen healthy, young participants were included in a randomized, counterbalanced within-subjects design study, in which participants underwent two experimental conditions, separated by a 1-wk period. Low-intensity blood-flow restricted exercise and high-intensity resistance exercise were performed using dynamic elbow flexion at 20 and 75% of 1 repetition maximum, respectively. Maximal voluntary contraction (MVC) and the sequential rate of torque development (absolute and relative) were measured before and after exercise. Both protocols elicited a similar decrement in MVC (~ 25%) and in the peak rate of torque development after exercise (~ 45%). The absolute rate of torque development (0-50 and 50-100 ms) was also reduced (p<0.05) similarly between conditions. After normalizing torque values to MVC, this was only sustained for the rate of torque development 0-50ms (p<0.05). We found that both exercise protocols induced similar acute attenuation of the absolute rate of torque development up to the first 100 ms of MVC. We also demonstrated that the reduction in the rate of torque development between 50-100ms (in both protocols) was largely explained by an acute deficit in muscle strength post-exercise. Conversely, the impact of each protocol on the first 50ms of muscle torque did not depend on lower levels of muscle strength after exercise.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • Training with a Heavy Puck Elicits a Higher Increase of Shooting Speed
           Than Unloaded Training in Midget Ice Hockey Players

    • Abstract: A method of load variability is a common way of developing specific skills in various sports, however, not explored considering the use of different ice-hockey pucks. Therefore, the purpose of this study was to compare shooting speed, shooting accuracy, and handgrip strength changes after training with variable training loads (lighter 60g pucks and heavier 260g pucks) in the wrist shot and snapshot. Sixteen male ice hockey players (13.62±0.35y; 167.67±7.71cm; 53.87±7.55kg) were subjected to a 12 week experiment during which they trained six weeks with a light puck and six weeks with a heavy puck and were tested for shooting speed, shooting accuracy and handgrip strength. The variable load training increased shooting speed (the long hand snapshot by 7.4%, the shorthand snapshot by 8.5%, and the wrist shot by 13%), shooting accuracy (by 14%), and handgrip strength (by 8.7%) of the bottom hand; all at p<0.001. Training with heavy pucks was more effective (d=0.50-0.86) than training with lighter pucks (d=23-25) for increasing puck speed. Shooting accuracy was increased by variable load training with a similar effect of heavy and light puck training. The variable training load had a positive effect on shooting speed and accuracy and the use of a heavier load was more effective than using the unloaded puck. Variable load shooting training in youth ice-hockey players is more effective with heavier pucks than lighter ones, and the improvements are greater in players with better shooting skills.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • Accuracy of Predicting One-Repetition Maximum from Submaximal Velocity in
           the Barbell Back Squat and Bench Press

    • Abstract: This study examined the accuracy of predicting a free-weight back squat and a bench press one-repetition maximum (1RM) using both 2- and 4-point submaximal average concentric velocity (ACV) methods. Seventeen resistance trained men performed a warm-up and a 1RM test on the squat and bench press with ACV assessed on all repetitions. The ACVs during the warm-up closest to 1.0 and 0.5m.s-1 were used in the 2-point linear regression forecast of the 1RM and the ACVs established at loads closest to 20, 50, 70, and 80% of the 1RM were used in the 4-point 1RM prediction. Repeated measures ANOVA and Bland-Altman and Mountain plots were used to analyze agreement between predicted and actual 1RMs. ANOVA indicated significant differences between the predicted and the actual 1RM for both the 2- and 4-point equations in both exercises (p<0.001). The 2-point squat prediction overestimated the 1RM by 29.12±0.07kg and the 4-point squat prediction overestimated the 1RM by 38.53±5.01kg. The bench press 1RM was overestimated by 9.32±4.68kg with the 2-point method and by 7.15±6.66kg using the 4-point method. Bland-Altman and Mountain plots confirmed the ANOVA findings as data were not tightly conformed to the respective zero difference lines and Bland-Altman plots showed wide limits of agreement. These data demonstrate that both 2- and 4-point velocity methods predicted the bench press 1RM more accurately than the squat 1RM. However, a lack of agreement between the predicted and the actual 1RM was observed for both exercises when volitional velocity was used.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • The Creation of Goal-Scoring Opportunities at the 2019 FIFA Women’s
           World Cup

    • Abstract: The aim of this study was to analyse how goal-scoring opportunities (GSOs) were created at the 2019 FIFA Women’s World Cup. The sample consisted of 868 GSOs that led to a shot at the goal throughout all 52 games during the tournament. All games were downloaded from the InStat platform. Descriptive statistics, chi-square of association and binary logistic regression analysis were used to analyse the data. Of the 868 GSOs, 81 (9.1%) resulted in goals. A significant association was observed between GSOs and the type of attack (χ2=6.38, p=0.01, V=0.09), with more goals being scored from a counter-attack (12.7%) than an organised attack (7.5%). Counter-attacks recorded a higher odds ratio in univariate analysis (OR=0.56; 95%CI:0.35–0.88; p=0.01) than in multivariate analysis (OR=0.46; 95%CI:0.28–0.76; p=0.002). The multivariate analysis further indicated a significant probability of scoring when ball possession started in the middle third of the field (OR=0.19; 95%CI:0.44–0.88; p= 0.01). The current study has practical implications for soccer coaches to develop and implement training sessions to improve goal-scoring chances of women’s teams at international competitions.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
  • On-Court Change of Direction Test: An Effective Approach to Assess COD
           Performance in Badminton Players

    • Abstract: The aim of this research was to assess the reliability of a specific change of direction test (i.e., “On-Court COD test”) in youth badminton players, evaluate the effect of age on On-Court COD performance, and examine its correlations with linear speed, change of direction speed, and vertical jump tests. Forty-two young badminton players (27 males and 15 females; age: 17.3±1.6 years, body height: 170.3±7.5 cm, body mass: 59.0±9.7 kg) were divided into two age groups (Under 17 years and under 19 years). Tests included: linear sprints (5, 10, and 20-m), bilateral/unilateral countermovement jumps, a hexagon test, traditional and modified 505 change of direction tests; and On-court COD. Results showed an excellent intraclass correlation coefficient score (0.90) and a very low coefficient of variation values (1.6%) for the On-Court COD test. Comparing age groups, under 19 players were significantly faster in linear sprints (i.e., 5, 15 and 20-m; small to moderate effect sizes) and in all change of direction tests (moderate to large effect sizes). Moreover, the On-Court COD test showed moderate to large (r=.513-.779) relationships with both acceleration and COD abilities in under 17 players, and with linear sprints, COD, and jump performances in under 19 players. These data indicate that the On-Court COD test is a useful and reliable means to assess COD performance in youth badminton players and it is associated with acceleration, sprint and jump performance.
      PubDate: Tue, 26 Apr 2022 00:00:00 GMT
       
 
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