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  Subjects -> SPORTS AND GAMES (Total: 199 journals)
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Biomedical Human Kinetics
Journal Prestige (SJR): 0.123
Number of Followers: 9  

  This is an Open Access Journal Open Access journal
ISSN (Online) 2080-2234
Published by Sciendo Homepage  [389 journals]
  • Effects of complex-contrast training on physical fitness in male field
           hockey athletes

    • Abstract: Study aim: This study aimed to examine the effects of a six-week complex-contrast training (CCT) intervention on the physical fitness of male field hockey athletes.Material and methods: Participants were randomized into a CCT (n = 8) or control (CG; n = 6) group. Physical fitness was assessed pre- and post-six-week intervention using a 30 m linear sprint test, medicine ball throw, standing long jump (SLJ), countermovement jump with arm swing (CMJA), modified T-test (MAT), and unilateral isokinetic maximal strength test (knee flexion and extension) of both legs. The six-week CCT intervention was integrated as three weekly sessions within the sport-specific training schedule of field hockey athletes. Each session included four contrast pair exercises (e.g., squat + squat jump). ANCOVA with baseline scores as a covariate was used to analyze the specific training effects.Results: Significant differences between CCT and CG were observed in the 30 m sprint, CMJA, MAT, and isokinetic strength (p < 0.001–0.013) after the intervention, favoring the CCT group. Further, post-hoc analyses revealed significant pre to post improvements in all dependent variables for the CCT group (p < 0.001–0.001; effect size [g] = 0.28–2.65; %Δ = 3.1–16.3), but not in the CG (p = 0.169–0.991; g = 0.00–0.32; %Δ = 0.0–2.6).Conclusion: Supplementing regular field hockey training with CCT is recommended as an effective training strategy to improve the performance of linear sprints, vertical jumps, changes of direction, and muscle strength in amateur male field hockey athletes.
      PubDate: Tue, 29 Aug 2023 00:00:00 GMT
  • Knock knee deformity and body mass index among the male school students of
           9 to 13 years old of chandigarh, India

    • Abstract: Study aim: To study knock knee deformity and the body mass index among male school students of Chandigarh, India. The study also intended to evaluate the association of knock knee deformity with BMI.Material and method: In total, 900 school students were selected, and out of these 300 each were from private, government model and government schools in slum areas. Convenient sampling was employed. The age of the subjects ranged from 9 to 13 years. Height, weight, BMI and intermalleolar distance of selected subjects were assessed. Descriptive statistics, ANOVA and correlation were employed.Results: The highest percentages of obese (11.3%) and overweight (15.3%) students were found in the private schools. The highest percentages of severe knock knee deformity (10.7%) were found in the students of the private schools, whereas 16.7% of students in the government model schools had moderate knock knee deformity. Height, weight and BMI were significantly correlated with knock knee deformity.Conclusion: Body weight among the school students might be associated with the school type, as the problem of obesity and underweight was pervasive in private and government schools. Knock knee deformity was related to the school type and body weight status.
      PubDate: Thu, 10 Aug 2023 00:00:00 GMT
  • Reliability of a self-report questionnaire to assess parents’
           postural knowledge

    • Abstract: Study aim: To develop a reliable and valid questionnaire to assess parents’ postural knowledge.Material and methods: This questionnaire was conducted on 30 Iranian parents. The questionnaire assessed knowledge of abnormalities in body posture and ergonomic knowledge of parents, which were in line with their postural knowledge. The kappa coefficient (test–retest reliability) of the questionnaire included assessing its stability over 1 week among 30 participants. The validity of the content of the questionnaire was checked and agreed upon by three experts from three different institutions.Results: The kappa coefficient for 19 questions and their 46 sub-questions ranged from 0.30 to 1. Out of these items, 89% (n = 41) had a value of 0.6 or above and 11% (n = 5) were below 0.6. Questions were categorized as “no change expected” (0.86÷1), “change unlikely” (0.68÷1), and “change likely” (0.30÷0.68).Conclusions: The Parent’s Postural Knowledge Questionnaire was found to be highly reliable and its contents relevant for the assessment of postural knowledge among Iranian parents. This tool is appropriate for studying larger populations in the variable of interest.
      PubDate: Thu, 10 Aug 2023 00:00:00 GMT
  • The influence of percussion massage on knee’s range of motion in two

    • Abstract: Study aim: The practical application of vibration stimuli is increasingly observed in physiotherapy and sports. The aim of the study was to investigate the effects of local vibration on knee-joint range of motion (ROM) improvement among male American football players.Materials and methods: The study consisted of 31 participants (age 22.9 ± 4.3), divided by knee injury (KI) history and nKI (no knee injury). The intervention involved the use of vibration on parts of the quadriceps muscle with a 10-second vibration and 5-second intermission protocol. ROM measurements were conducted in the prone position (PrP) before the intervention, immediately after, and after 10 minutes, as well as in the half-kneeling position (HkP) before and immediately after.Results: Knee ROM increased immediately after (p < 0.001) and 10 minutes after (p < 0.05) the intervention in nKI in the PrP, and there was a statistically significant improvement in the HkP (p < 0.001). There was no significant interaction between ROM in PrP and knee injury (F2,58 = 8.562; p < 0.001), but there were significant differences in the ROM before (KI: 133.9° ± 6.26°; nKI: 144° ± 4.06°), immediately after (KI: 137.3° ± 6.98°; nKI: 145.9° ± 4.64°), and 10 minutes after (KI: 136.7° ± 6.75°; nKI: 145.6° ± 4.5°) the intervention. There was no significant interaction between ROM measurement in HkP and knee injury. There was a statistically significant difference in ROM (F1,29 = 33.76; p < 0.001) before (KI: 141.4° ± 7.66°; nKI: 146.4° ± 7.17°) and immediately after (KI: 145.3° ± 8.22°; nKI: 150.2° ± 6.32°) the intervention in the HkP.Conclusions: Local vibration may increase knee ROM by improving soft tissue elasticity.
      PubDate: Sat, 22 Jul 2023 00:00:00 GMT
  • Myofascial and balance tests after anterior cruciate ligament
           reconstruction in adolescent patients

    • Abstract: Study aim: The functional assessment of patients after anterior cruciate ligament reconstruction (ACLR) is one of the key points in deciding whether one can safely return to physical activity. The aim of this study is to investigate the usefulness of the NEURAC® tests and single leg balance test (SLBT) in the functional evaluation of adolescent patients after ACLR to detect differences between the operated and non-operated extremity.Material and methods: A total of 31 physically active, adolescent patients (mean age: 15.7 ± 1.4 years) who underwent primary single-bundle ACLR using the autogenous semitendinosus-gracilis tendon graft were evaluated using the NEURAC® and SLBT tests (mean time from surgery to examination was 6.6 ± 1.0 months). All patients were operated on by the same surgeon, and postoperative physiotherapy was carried out using a standardized protocol.Results: Only one of the NEURAC® tests showed significant differences between the operated and non-operated extremities: prone bridging (3.58º vs. 3.97º, P = 0.01). Several weak and moderate, significant correlations between NEURAC® and SLBT tests were observed in the operated (r from –0.42 to 0.37) and non-operated (r from –0.37 to –0.43) extremitiesConclusions: The NEURAC® tests in comparison to SLBT seems to be more effective for detecting functional differences between the operated and non-operated extremity in adolescent patients about 6 months post-ACLR. Correlations between the outcomes of the NEURAC® tests and SLBT are not clear.
      PubDate: Sat, 22 Jul 2023 00:00:00 GMT
  • Changes in thrust force in swimmers in the annual training cycle

    • Abstract: Study aim: Determination of changes in thrust force and effect size of training load in swimmers using four swimming strokes monitored 4 times a year.Material and methods: Five elite male swimmers were examined in a training macrocycle of 9 months. The swimmers were examined four times: at baseline (September), immediately after the winter Polish Championships (December), at the end of the transition period (March), and immediately after the summer Polish Championships (late May).Results: In all participants, significant differences in strength (p < 0.001) were observed between measurements I and II (p < 0.001) and between measurements I and IV (p < 0.001). Athletes specializing in the 200 m were characterized by a smaller decline in thrust force. Athletes specializing in breaststroke had significantly higher (p < 0.001) thrust values than the other participants.Conclusions: It is suggested that the trainers measure the thrust during the preparatory period in order to verify the applied training loads aimed at developing strength, as well as during the starting period to verify the competitor’s strength level in correlation with the sports result.
      PubDate: Tue, 20 Jun 2023 00:00:00 GMT
  • Effects of complex-descending versus traditional resistance training on
           physical fitness abilities of female team sports athletes

    • Abstract: Study aim: The study compared the effects of six weeks of complex-descending training (CDT), traditional resistance training (RT), and sport-specific training (i.e., active control group [CG]) on measures of physical fitness.Material and methods: Thirty-one female team sport athletes were randomly assigned to either the CDT group (n = 11), the RT group (n = 10), or the CG (n = 10), and were assessed before and after intervention for linear sprint (10 m and 30 m), change of direction sprint (CODS), standing long jump (SLJ), running based anerobic sprint test (peak power, average power), resting heart rate, Cooper 12-min run test, and body fat percentage.Results: ANCOVA with baseline scores as covariates revealed significant between-group differences for 10 m and 30 m linear sprint, CODS, SLJ, and Cooper 12-min run test after the intervention. The further post-hoc tests revealed significant differences between CDT and CG in 10 m and 30 m sprints, CODS and SLJ, with results favoring CDT, and between RT and CG in 10 m linear sprint and Cooper 12-min run test, with results favoring RT. However, no significant differences were observed between CDT and RT in any dependent variable.Conclusion: CDT is effective in improving 10 m and 30 m linear sprints, CODS, and SLJ compared to CG, and RT is effective in improving 10 m sprint and Cooper 12-min run test compared to CG. Therefore, supplementing sport-specific training with either CDT or RT may offer additional benefits in improving specific physical fitness abilities of female team-sport athletes.
      PubDate: Sun, 11 Jun 2023 00:00:00 GMT
  • Rifle and aiming point accelerations do not differ between the most and
           least accurate shots in biathlon shooting within an athlete

    • Abstract: Study aim: As studies from shooting disciplines other than biathlon have observed associations between weapon accelerations and shooting performance, this study investigated whether accelerations of the rifle stock and aiming point (the point on the target where the rifle is aimed at) are associated with shooting performance, and differences in rifle and aiming point accelerations between the most and least accurate shots. Further, associations between rifle and aiming point accelerations were studied.Materials and methods: Shooting performance (HitDist, hit point distance from the center of the target) along with rifle and aiming point accelerations were measured from nine biathletes who performed 6×5 biathlon prone and standing shots.Results: In the prone posture, rifle or aiming point accelerations were neither associated with shooting performance nor with each other. In the standing posture, vertical rifle accelerations right before triggering were negatively associated with HitDist (r = –0.70, p < 0.05), whereas aiming point accelerations were not associated with HitDist. Horizontal rifle accelerations were positively associated with aiming point accelerations in standing (r = 0.74, p = 0.024), whereas vertical or resultant rifle accelerations did not demonstrate associations with aiming point accelerations. In both postures, rifle accelerations were of the same magnitude in the most and least accurate shots.Conclusion: Rifle and aiming point accelerations provide limited description of the technical level in biathlon shooting. Moreover, rifle accelerations alone do not appear to provide sufficient information to deduce the aiming point movements. Angular movement would likely be required for aiming point movement estimation.
      PubDate: Tue, 23 May 2023 00:00:00 GMT
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