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MEDICAL SCIENCES (2415 journals)            First | 3 4 5 6 7 8 9 10 | Last

Showing 1201 - 1400 of 3562 Journals sorted alphabetically
Journal of Evaluation In Clinical Practice     Hybrid Journal   (Followers: 6)
Journal of Evidence-Based Healthcare     Open Access   (Followers: 1)
Journal of Evidence-Based Integrative Medicine     Open Access   (Followers: 18)
Journal of Evidence-Based Medicine     Partially Free   (Followers: 4)
Journal of Exercise Science & Fitness     Open Access   (Followers: 29)
Journal of Experimental and Clinical Anatomy     Open Access   (Followers: 2)
Journal of Family and Community Medicine     Open Access   (Followers: 3)
Journal of Family Medicine and Primary Care     Open Access   (Followers: 11)
Journal of Foot and Ankle Research     Open Access   (Followers: 6)
Journal of Forensic Science and Research     Open Access   (Followers: 2)
Journal of Gandaki Medical College-Nepal     Open Access  
Journal of Generic Medicines     Hybrid Journal   (Followers: 2)
Journal of Geographical Sciences     Hybrid Journal   (Followers: 1)
Journal of Global Antimicrobial Resistance     Hybrid Journal   (Followers: 3)
Journal of Hand Therapy     Hybrid Journal   (Followers: 19)
Journal of Head & Neck Physicians and Surgeons     Open Access   (Followers: 2)
Journal of Health & Medical Informatics     Open Access   (Followers: 62)
Journal of Health and Biological Sciences     Open Access   (Followers: 1)
Journal of Health Design     Open Access   (Followers: 1)
Journal of Health Economics and Outcomes Research     Open Access   (Followers: 1)
Journal of Health Promotion and Behavior     Open Access  
Journal of Health Research and Reviews     Open Access  
Journal of Health Science and Medical Research     Open Access  
Journal of Health Science Research     Open Access  
Journal of Health Sciences     Open Access   (Followers: 1)
Journal of health sciences     Open Access  
Journal of Health Sciences / Sağlık Bilimleri Dergisi     Open Access  
Journal of Health Sciences and Medicine     Open Access  
Journal of Health Sciences and Medicine     Open Access   (Followers: 6)
Journal of Health Sciences and Surveillance System     Open Access  
Journal of Health Sciences Scholarship     Open Access  
Journal of Health Specialties     Open Access  
Journal of Health Studies     Open Access  
Journal of Healthcare Informatics Research     Hybrid Journal   (Followers: 1)
Journal of Heavy Metal Toxicity and Diseases     Open Access  
Journal of Helminthology     Hybrid Journal   (Followers: 2)
Journal of Herbs Spices & Medicinal Plants     Hybrid Journal  
Journal of HIV for Clinical and Scientific Research     Open Access   (Followers: 2)
Journal of Hospital Medicine     Hybrid Journal   (Followers: 11)
Journal of Huazhong University of Science and Technology [Medical Sciences]     Hybrid Journal  
Journal of Human Hypertension     Hybrid Journal   (Followers: 3)
Journal of Human Rhythm     Open Access  
Journal of Human Transcriptome     Open Access  
Journal of Ideas in Health     Open Access  
Journal of Inflammation     Open Access   (Followers: 2)
Journal of Inflammation Research     Open Access  
Journal of Injury and Violence Research     Open Access   (Followers: 6)
Journal of Innovation in Health Informatics     Open Access   (Followers: 17)
Journal of Institute of Medicine     Open Access  
Journal of Insulin Resistance     Open Access   (Followers: 1)
Journal of Interactional Research in Communication Disorders     Hybrid Journal   (Followers: 5)
Journal of Interferon & Cytokine Research     Hybrid Journal   (Followers: 3)
Journal of International Medical Research     Open Access   (Followers: 3)
Journal of Interventional Medicine     Open Access   (Followers: 1)
Journal of Investigative Medicine     Hybrid Journal   (Followers: 3)
Journal of Islamabad Medical & Dental College     Open Access   (Followers: 2)
Journal of Istanbul Faculty of Medicine     Open Access  
Journal of Karnali Academy of Health Sciences     Open Access   (Followers: 1)
Journal of Kathmandu Medical College     Open Access   (Followers: 1)
Journal of King Abdulaziz University : Medical Sciences     Open Access   (Followers: 2)
Journal of Laboratory Medicine     Hybrid Journal   (Followers: 27)
Journal of Laryngology and Voice     Open Access   (Followers: 11)
Journal of Lasers in Medical Sciences     Open Access  
Journal of Law, Medicine & Ethics     Hybrid Journal   (Followers: 28)
Journal of Legal Medicine     Hybrid Journal   (Followers: 7)
Journal of Limb Lengthening & Reconstruction     Open Access  
Journal of Lumbini Medical College     Open Access   (Followers: 1)
Journal of Mahatma Gandhi Institute of Medical Sciences     Open Access  
Journal of Manipulative and Physiological Therapeutics     Hybrid Journal   (Followers: 6)
Journal of Manmohan Memorial Institute of Health Sciences     Open Access   (Followers: 1)
Journal of Marine Medical Society     Open Access  
Journal of Materials Science : Materials in Medicine     Hybrid Journal   (Followers: 4)
Journal of Maternal and Child Health     Open Access  
Journal of Mechanics in Medicine and Biology     Hybrid Journal  
Journal of Medical and Biological Engineering     Hybrid Journal   (Followers: 4)
Journal of Medical and Biomedical Sciences     Open Access   (Followers: 2)
Journal of Medical Case Reports     Open Access   (Followers: 1)
Journal of Medical Cases     Open Access   (Followers: 6)
Journal of Medical Colleges of PLA     Full-text available via subscription  
Journal of Medical Disorders     Open Access  
Journal of Medical Economics     Hybrid Journal   (Followers: 8)
Journal of Medical Education and Curricular Development     Open Access   (Followers: 6)
Journal of Medical Ethics     Partially Free   (Followers: 27)
Journal of Medical Ethics and History of Medicine     Open Access   (Followers: 19)
Journal of Medical Humanities     Hybrid Journal   (Followers: 21)
Journal of Medical Hypotheses and Ideas     Open Access  
Journal of Medical Imaging and Health Informatics     Full-text available via subscription   (Followers: 1)
Journal of Medical Investigation and Practice     Open Access  
Journal of Medical Laboratory and Diagnosis     Open Access  
Journal of Medical Law and Ethics     Full-text available via subscription   (Followers: 17)
Journal of Medical Microbiology     Full-text available via subscription   (Followers: 6)
Journal of Medical Sciences     Open Access  
Journal of Medical Sciences     Open Access  
Journal of Medical Screening     Hybrid Journal   (Followers: 6)
Journal of Medical Signals and Sensors     Open Access   (Followers: 3)
Journal of Medical Society     Open Access  
Journal of Medical Systems     Hybrid Journal  
Journal of Medical Toxicology     Hybrid Journal   (Followers: 6)
Journal of Medical Ultrasound     Open Access   (Followers: 2)
Journal of Medicinal Botany     Open Access  
Journal of Medicinal Chemistry     Hybrid Journal   (Followers: 209)
Journal of Medicine     Open Access   (Followers: 1)
Journal of Medicine and Biomedical Research     Open Access   (Followers: 1)
Journal of Medicine and Philosophy     Hybrid Journal   (Followers: 9)
Journal of Medicine and the Person     Hybrid Journal  
Journal of Medicine in Scientific Research     Open Access  
Journal of Medicine in the Tropics     Open Access  
Journal of Medicine Research and Development     Open Access   (Followers: 3)
Journal of Medicine, Physiology and Biophysics     Open Access   (Followers: 5)
Journal of Medicines Development Sciences     Open Access   (Followers: 1)
Journal of Metabolomics & Systems Biology     Open Access   (Followers: 2)
Journal of Mind and Medical Sciences     Open Access   (Followers: 1)
Journal of Molecular Medicine     Hybrid Journal   (Followers: 11)
Journal of Movement Disorders     Open Access   (Followers: 2)
Journal of Multidisciplinary Research in Healthcare     Open Access   (Followers: 3)
Journal of Muscle Research and Cell Motility     Hybrid Journal   (Followers: 1)
Journal of Nanotechnology in Engineering and Medicine     Full-text available via subscription   (Followers: 6)
Journal of Nanotheranostics     Open Access   (Followers: 1)
Journal of Natural Medicines     Hybrid Journal  
Journal of Natural Science, Biology and Medicine     Open Access   (Followers: 3)
Journal of Nature and Science of Medicine     Open Access   (Followers: 4)
Journal of Negative and No Positive Results     Open Access  
Journal of Nepalgunj Medical College     Open Access  
Journal of Neurocritical Care     Open Access  
Journal of Neurodegenerative Diseases     Open Access   (Followers: 2)
Journal of Neurorestoratology     Open Access  
Journal of Neuroscience and Neurological Disorders     Open Access  
Journal of Nobel Medical College     Open Access  
Journal of Obesity and Bariatrics     Open Access   (Followers: 2)
Journal of Occupational Health     Open Access  
Journal of Occupational Therapy Education     Open Access   (Followers: 12)
Journal of Ocular Biology, Diseases, and Informatics     Hybrid Journal  
Journal of Oral Biology and Craniofacial Research     Full-text available via subscription  
Journal of Oral Health and Craniofacial Science     Open Access  
Journal of Orofacial Sciences     Open Access  
Journal of Otorhinolaryngology, Hearing and Balance Medicine     Open Access   (Followers: 1)
Journal of Ovarian Research     Open Access  
Journal of Ozone Therapy     Open Access  
Journal of Palliative Medicine     Hybrid Journal   (Followers: 47)
Journal of Paramedical Sciences & Rehabilitation     Open Access  
Journal of Parkinsonism and Restless Legs Syndrome     Open Access   (Followers: 2)
Journal of Parkinson’s Disease and Alzheimer’s Disease     Open Access   (Followers: 1)
Journal of Participatory Medicine     Open Access  
Journal of Patan Academy of Health Sciences     Open Access  
Journal of Pathogens     Open Access   (Followers: 1)
Journal of Patient Experience     Open Access  
Journal of Patient Safety and Risk Management     Hybrid Journal   (Followers: 2)
Journal of Patient-Centered Research and Reviews     Open Access  
Journal of Patient-Reported Outcomes     Open Access  
Journal of Periodontal Research     Hybrid Journal  
Journal of Personalized Medicine     Open Access   (Followers: 3)
Journal of Pest Science     Hybrid Journal   (Followers: 1)
Journal of Pharmaceutical Policy and Practice     Open Access   (Followers: 4)
Journal of Physiobiochemical Metabolism     Hybrid Journal   (Followers: 2)
Journal of Physiology-Paris     Hybrid Journal   (Followers: 2)
Journal of Pioneering Medical Sciences     Open Access  
Journal of Postgraduate Medicine     Open Access  
Journal of Pregnancy     Open Access   (Followers: 4)
Journal of Prevention & Intervention Community     Hybrid Journal   (Followers: 7)
Journal of Preventive Medicine and Public Health     Open Access  
Journal of Primary Prevention     Hybrid Journal   (Followers: 7)
Journal of Prosthodontic Research     Full-text available via subscription   (Followers: 1)
Journal of Prosthodontics     Hybrid Journal   (Followers: 2)
Journal of Receptor, Ligand and Channel Research     Open Access   (Followers: 1)
Journal of Regenerative Medicine     Partially Free   (Followers: 4)
Journal of Research in Medical Sciences     Open Access   (Followers: 2)
Journal of Science and Applications : Biomedicine     Open Access   (Followers: 1)
Journal of Science and Technology (Ghana)     Open Access   (Followers: 3)
Journal of Scientific Innovation in Medicine     Open Access  
Journal of Scientific Perspectives     Open Access   (Followers: 1)
Journal of Sensory Studies     Hybrid Journal   (Followers: 4)
Journal of Shaheed Suhrawardy Medical College     Open Access  
Journal of Shoulder and Elbow Arthroplasty     Open Access  
Journal of Sleep Disorders : Treatment & Care     Hybrid Journal   (Followers: 10)
Journal of South American Earth Sciences     Hybrid Journal   (Followers: 5)
Journal of Spinal Cord Medicine     Hybrid Journal   (Followers: 5)
Journal of Spinal Disorders & Techniques     Hybrid Journal   (Followers: 2)
Journal of Sports Medicine and Allied Health Sciences : Official Journal of the Ohio Athletic Trainers Association     Open Access   (Followers: 1)
Journal of Stem Cell Therapy and Transplantation     Open Access   (Followers: 1)
Journal of Stomal Therapy Australia     Full-text available via subscription   (Followers: 1)
Journal of Strength and Conditioning Research     Hybrid Journal   (Followers: 77)
Journal of Substance Use     Hybrid Journal   (Followers: 15)
Journal of Surgical Academia     Open Access   (Followers: 1)
Journal of Surgical and Clinical Research     Open Access  
Journal of Surgical Case Reports     Open Access  
Journal of Surgical Education     Full-text available via subscription   (Followers: 3)
Journal of Surgical Technique and Case Report     Open Access  
Journal of Systemic Therapies     Full-text available via subscription   (Followers: 3)
Journal of Taibah University Medical Sciences     Open Access  
Journal of Telemedicine and Telecare     Hybrid Journal   (Followers: 12)
Journal of The Academy of Clinical Microbiologists     Open Access  
Journal of the American Association for Laboratory Animal Science     Full-text available via subscription   (Followers: 9)
Journal of the American College of Certified Wound Specialists     Hybrid Journal   (Followers: 2)
Journal of the American College of Clinical Wound Specialists     Hybrid Journal   (Followers: 2)
Journal of the American Medical Directors Association     Hybrid Journal   (Followers: 5)
Journal of the American Medical Informatics Association : JAMIA     Hybrid Journal   (Followers: 36)
Journal of the American Podiatric Medical Association     Full-text available via subscription   (Followers: 7)
Journal of the Anatomical Society of India     Full-text available via subscription  
Journal of the Anus, Rectum and Colon     Open Access  
Journal of The Arab Society for Medical Research     Open Access  

  First | 3 4 5 6 7 8 9 10 | Last

Similar Journals
Journal Cover
Journal of Exercise Science & Fitness
Journal Prestige (SJR): 0.378
Citation Impact (citeScore): 1
Number of Followers: 29  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1728-869X
Published by Elsevier Homepage  [3200 journals]
  • Accuracy of a smartphone pedometer application according to different
           speeds and mobile phone locations in a laboratory context

    • Authors: Bastien Presset; Balazs Laurenczy; Davide Malatesta; Jérôme Barral
      Pages: 43 - 48
      Abstract: Publication date: August 2018
      Source:Journal of Exercise Science & Fitness, Volume 16, Issue 2
      Author(s): Bastien Presset, Balazs Laurenczy, Davide Malatesta, Jérôme Barral


      PubDate: 2018-05-28T01:29:02Z
      DOI: 10.1016/j.jesf.2018.05.001
      Issue No: Vol. 16, No. 2 (2018)
       
  • Quality of life in older adults: Benefits from the productive engagement
           in physical activity

    • Authors: Hsin-Yen Yen; Li-Jung Lin
      Pages: 49 - 54
      Abstract: Publication date: August 2018
      Source:Journal of Exercise Science & Fitness, Volume 16, Issue 2
      Author(s): Hsin-Yen Yen, Li-Jung Lin
      Productive engagement can be a strategy to reduce stress and chaos. Physical activity, a basic type of productive activity, could benefit older adults. Therefore, the purpose of this study was to explore how productive engagement in physical activity may influence older adults in maintaining their health-related quality of life when they live in a long-term care facility. We used purposive sampling to recruit 163 participants from 14 long-term care facilities in Taiwan. Data were collected through individual interviews with a structured questionnaire. Descriptive statistics and independent t-test were used. The result demonstrated that the preferred type of physical activities for the older adults was similar after the relocation. Older adults with increasing productive engagement in physical activity reported better scores of Mental Component Summary, social and emotional role functioning than those with decreasing productive engagement in physical activity. Older adults can have a positive perceived health-related quality of life by consistently or increasingly engaging in productive physical activity, especially when encountering a life event.

      PubDate: 2018-06-09T08:16:23Z
      DOI: 10.1016/j.jesf.2018.06.001
      Issue No: Vol. 16, No. 2 (2018)
       
  • Detraining effects of regular Tai Chi exercise on postural control ability
           in older women: A randomized controlled trial

    • Authors: Wei Sun; Lin Wang; Cui Zhang; Qipeng Song; Houxin Gu; Dewei Mao
      Pages: 55 - 61
      Abstract: Publication date: August 2018
      Source:Journal of Exercise Science & Fitness, Volume 16, Issue 2
      Author(s): Wei Sun, Lin Wang, Cui Zhang, Qipeng Song, Houxin Gu, Dewei Mao
      Objective This study aimed to investigate the training and detraining effects of Tai Chi (TC) on postural control ability in single leg stance (SLS) by conducting a single-blind randomized controlled trial. Method Forty-eight older women were randomly divided into the TC, brisk walking (BW), and control(C) groups by using computer-generated program. The participants completed a 16-week intervention training and 8-week detraining program. Postural control ability in SLS was tested at the baseline, 16 t h, 20 t h, and 24 t h weeks. The primary outcomes included single-leg stance time (Time) and secondary outcomes included maximal displacement of the center of pressure (COP) in the anterior–posterior (AP) direction (D-ap), maximal displacement of the COP in the medial–lateral (ML) direction (D-ml), total length of the COP trajectories (Lng), and 95% confidence ellipse area of the COP movements (area), mean AP total excursion velocities (V-ap), and mean ML total excursion velocities (V-ml). Results Significant within-group difference compared with the baseline and between-groups difference compared with control group were found at 16 t h, 20 t h, and 24 t h weeks in the TC group and at the 16 t h and 20 t h weeks in the BW group in all the primary and secondary outcomes. Most of secondary outcomes including Lng, D-ml, V-ml, Area increased significantly at the 24 t h week compared with that at the 16 t h week in BW group. Conclusions TC was effective in improving postural control ability and maintaining intervention gains, and was recommended as an appropriate exercise to prevent falls in the older adults.

      PubDate: 2018-06-12T09:25:13Z
      DOI: 10.1016/j.jesf.2018.06.003
      Issue No: Vol. 16, No. 2 (2018)
       
  • Influence of lateral pedal translation on muscle recruitment and
           kinematics in cyclists

    • Authors: Ryan S. McCulloch
      Pages: 62 - 67
      Abstract: Publication date: August 2018
      Source:Journal of Exercise Science & Fitness, Volume 16, Issue 2
      Author(s): Ryan S. McCulloch
      Background/Objective Current cycling pedals constrain the pedaling motion to the sagittal plane. This study aimed to evaluate novel pedal systems that allow lateral translation through the pedal stroke via frontal plane kinematics and muscle recruitment. Methods Sixteen cyclists were recruited to pedal on three pedal systems: standard pedals (STD), free lateral translation (LAT), and a guided lateral translation pedal (VL). Frontal plane kinematics were measured via markers on the hip, knee, and foot. EMG recordings were collected from 8 leg muscles and expressed as a percentage of functional threshold power activation levels. Results Knee and ankle range of movement was significantly more highly correlated in the VL pedals compared to STD (r = .46 ± .08, vs. .23 ± .05; p = .028). The rectus femoris was recruited significantly less in the VL vs. STD pedals (23.6 ± 7.7% lower, p = .008). The hip abductors were more highly recruited in VL vs. STD: gluteus medius (16.9 ± 7.2% higher, p = .033) and the tensor fascia latae (30.9 ± 8.5% lower, p = .003). Conclusion VL pedals may improve knee-to-ankle tracking through the pedal stroke and may allow cyclists to increase power output through the additional recruitment of hip abductors.

      PubDate: 2018-06-12T09:25:13Z
      DOI: 10.1016/j.jesf.2018.06.002
      Issue No: Vol. 16, No. 2 (2018)
       
  • Effects of ambient particulate matter on aerobic exercise performance

    • Authors: Dale R. Wagner; Nicolas W. Clark
      Pages: 12 - 15
      Abstract: Publication date: April 2018
      Source:Journal of Exercise Science & Fitness, Volume 16, Issue 1
      Author(s): Dale R. Wagner, Nicolas W. Clark
      Background/Objective Wintertime thermal inversions in narrow mountain valleys create a ceiling effect, increasing concentration of small particulate matter (PM2.5). Despite potential health risks, many people continue to exercise outdoors in thermal inversions. This study measured the effects of ambient PM2.5 exposure associated with a typical thermal inversion on exercise performance, pulmonary function, and biological markers of inflammation. Methods Healthy, active adults (5 males, 11 females) performed two cycle ergometer time trials outdoors in a counterbalanced design: 1) low ambient PM2.5 concentrations (<12 μg/m3), and 2) an air quality index (AQI) ranking of “yellow.” Variables of interest were exercise performance, exhaled nitric oxide (eNO), c-reactive protein (CRP), forced vital capacity (FVC), and forced expiratory volume in 1 s (FEV1). Results Despite a significant difference in mean PM2.5 concentration of 9.3 ± 3.0 μg/m3 between trials (p < .001), there was no significant difference (p = .424) in the distance covered during low PM2.5 conditions (9.9 ± 1.7 km) compared to high PM2.5 conditions (10.1 ± 1.5 km). There were no clinically significant differences across time or between trials for eNO, CRP, FVC, or FEV1. Additionally, there were no dose-response relationships (p > .05) for PM2.5 concentration and the measured variables. Conclusion An acute bout of vigorous exercise during an AQI of “yellow” did not diminish exercise performance in healthy adults, nor did it have a negative effect on pulmonary function or biological health markers. These variables might not be sensitive to small changes from acute, mild PM2.5 exposure.

      PubDate: 2018-01-10T03:13:11Z
      DOI: 10.1016/j.jesf.2018.01.002
      Issue No: Vol. 16, No. 1 (2018)
       
  • Influence of recovery duration during 6-s sprint interval exercise on time
           spent at high rates of oxygen uptake

    • Authors: Qingde Shi; Tomas K. Tong; Shengyan Sun; Zhaowei Kong; Chan Kit Chan; Wei Liu; Jinlei Nie
      Pages: 16 - 20
      Abstract: Publication date: April 2018
      Source:Journal of Exercise Science & Fitness, Volume 16, Issue 1
      Author(s): Qingde Shi, Tomas K. Tong, Shengyan Sun, Zhaowei Kong, Chan Kit Chan, Wei Liu, Jinlei Nie
      This study examined whether time spent at high rates of oxygen consumption (VO2) during 6-s sprint interval exercises (SIE) is a function of recovery interval duration. In a randomised crossover study, thirteen male endurance runners performed 40 × 6-s all-out sprints interspersed with 15-s, 30-s and 60-s passive recovery intervals (SIE15, SIE30, and SIE60 trials respectively), and a work duration-matched Wingate-SIE (8 × 30-s all-out sprints with 4-min passive recovery, SIEWin trial). The accumulated exercise time at ≥ 80%, 85%, 90%, 95% and 100% of VO2max, and maximum heart rate (HRmax) in the four trials were compared. During the 6-s SIEs, accumulated time spent at all selected high rates of VO2max increased as recovery time decreased, whilst the SIE work rate decreased (p < .05). In SIEWin, although the exercise lasted longer, the time spent at ≥90% VO2max (74 ± 16 s) was significant less than that in SIE15 (368 ± 63 s, p < .05), yet comparable to that in SIE30 (118 ± 30 s, p > .05), and longer than that in SIE60 (20 ± 14 s, p < .05). The differences between the four trials in accumulated time at high percentages of HRmax were similar to those for VO2, although the temporal characteristics of the increases in HR and VO2 during the SIEs were different. In conclusion, the duration of the recovery interval in 6-s SIE protocols appears to be a crucial parameter when sprint interval training is prescribed to enhance aerobic capacity. Further, the SIE15 protocol may represent a potential alternative to 30-s SIEWin in the development of time-efficient aerobic training intervention.

      PubDate: 2018-02-03T22:19:42Z
      DOI: 10.1016/j.jesf.2018.01.001
      Issue No: Vol. 16, No. 1 (2018)
       
  • The effect of a 12-week combinational exercise program on CD4 count and
           mental health among HIV infected women: A randomized control trial

    • Authors: Mostafa Dianatinasab; Mohammad Fararouei; Valiollah Padehban; Aria Dianatinasab; Yousef Alimohamadi; Shohreh Beheshti; Zeinab AminiLari; Mahmood AminiLari
      Pages: 21 - 25
      Abstract: Publication date: April 2018
      Source:Journal of Exercise Science & Fitness, Volume 16, Issue 1
      Author(s): Mostafa Dianatinasab, Mohammad Fararouei, Valiollah Padehban, Aria Dianatinasab, Yousef Alimohamadi, Shohreh Beheshti, Zeinab AminiLari, Mahmood AminiLari
      Background/objective There are conflicting results regarding the effects of exercise on immune function of HIV positive patients. Exercise can also be beneficial to psychological functioning of the patients. The purpose of this study was to determine the impact of a 12-week aerobic and resistance exercise training program on mental health and CD4 counts among female HIV+ patients. Methods This clinical trial was conducted between September and December 2013. Forty participants (women age range 20–40) were carefully selected from 240 HIV-positive women referred to Voluntary Counseling and Treatment Center (VCT) and randomly assigned to either exercise (80 min of aerobic and strength training while receiving the VCT's routine services) group (n = 20) or control (received the VCT's routine services only) group (n = 20). To assess their mental health status, all participants completed GHQ28 questionnaire. Blood samples were collected to measure CD4 and T-cell counts at baseline and at the end of the 12-week intervention. Results From a sample of 40 women with HIV infection, the data of 30 participants [experimental group (14) and control group (16)] were analyzed (participation rate 75%). The results indicated that after the intervention program, a significant difference in CD4 cell counts was found between the two groups (P = 0.01). With regard to mental health, after performing intervention, significant improvement in all subscales including anxiety disorder, social function, depression and mental health's total score was observed in the exercise compared to the control groups (P < 0.001). Conclusion Exercise training can be included in health care services in order to improve the mental health status of women with HIV infection. No effect on CD4 count was detected.

      PubDate: 2018-05-31T01:45:41Z
      DOI: 10.1016/j.jesf.2018.02.001
      Issue No: Vol. 16, No. 1 (2018)
       
  • Perceived physical literacy instrument for adolescents: A further
           validation of PPLI

    • Authors: K.W.R. Sum; C.F. Cheng; T. Wallhead; C.C. Kuo; F.J. Wang; S.M. Choi
      Pages: 26 - 31
      Abstract: Publication date: April 2018
      Source:Journal of Exercise Science & Fitness, Volume 16, Issue 1
      Author(s): K.W.R. Sum, C.F. Cheng, T. Wallhead, C.C. Kuo, F.J. Wang, S.M. Choi
      The purpose of this study is to examine the reliability and validity of “Perceived Physical Literacy Instrument” (PPLI) questionnaire in adolescents. Methods: Based on physical literacy literature, a 9-item instrument was developed for initial tests. The self-report measure was administered to 1945 adolescents in Hong Kong. Confirmatory factor analysis (CFA) was used to examine a three-factor structure of physical literacy. A chi-square difference test analysed several competing models and compared the results between the proposed models (i.e., a three-factor solution) and other alternative models (i.e., a one-factor or two-factor solution). Furthermore, the measurement invariance across gender groups was examined by using multiple-group confirmatory factor analysis. Mean scores for physical literacy factors were also examined by demographic characteristics. Results: Confirmatory factor analysis (CFA) showed that the construct demonstrated a good fit to the model. For convergent validity, our results, evaluating the factor loading of each items, the values of composite reliability (CR) and the average variance extracted (AVE) of the three factors, revealed that the three-factor validity of physical literacy was satisfactory. The chi-square difference test between models was significant indicating that all the latent variables had satisfactory discriminant validity. Moreover, the findings of measurement invariance showed that the PPLI is invariant across gender. Conclusions: The PPLI thus appeared to be reliable and valid as a measure of the perceived physical literacy of adolescents. Thus, along with other validated instruments, protocols and research designs, the PPLI could be widely used to test adolescents' self-perception of physical literacy and their own physical and mental health conditions and thereby health. Physical education professionals may thus recommend appropriate intervention programmes for younger generations.

      PubDate: 2018-03-18T12:45:07Z
      DOI: 10.1016/j.jesf.2018.03.002
      Issue No: Vol. 16, No. 1 (2018)
       
  • The relationship between ventilatory threshold and repeated-sprint ability
           in competitive male ice hockey players

    • Authors: Matthew R. Lowery; Grant R. Tomkinson; Benjamin J. Peterson; John S. Fitzgerald
      Pages: 32 - 36
      Abstract: Publication date: April 2018
      Source:Journal of Exercise Science & Fitness, Volume 16, Issue 1
      Author(s): Matthew R. Lowery, Grant R. Tomkinson, Benjamin J. Peterson, John S. Fitzgerald
      Background/objective The relationship between ventilatory threshold (VT1, VT2) and repeated-sprint ability (RSA) in competitive male ice hockey players was investigated. Methods Forty-three male ice hockey players aged 18–23 years competing in NCAA Division I, NCAA Division III, and Junior A level participated. Participants performed an incremental graded exercise test on a skate treadmill to determine V ˙ O2peak, VT1, and VT2 using MedGraphics Breezesuit™ software (v-slope). Participants performed an on-ice repeated shift (RSA) test consisting of 8-maximal skating bouts, lasting approximately 25 s and interspersed with 90 s of passive recovery, to determine first gate, second gate, and total sprint decrement (%dec). Pearson product-moment correlations and multiple regressions were used to assess relationships between ventilatory threshold variables (VT1, VT2, Stage at VT1, and Stage at VT2) and RSA (first gate, second gate, and total course decrement). Results Stage at VT2 was the only variable substantially correlated with first gate (r = −0.35; P < 0.05), second gate (r = −0.58; P < 0.001) and total course decrement (r = −0.42; P < 0.05). Conclusion The results of this study demonstrated that VT is substantially associated with RSA, and VT2 is more strongly correlated with RSA than V ˙ O2peak. This study suggests that longer duration high-intensity interval training at intensities that increase workrate at VT2 may lead to possible improvements in RSA.

      PubDate: 2018-03-18T12:45:07Z
      DOI: 10.1016/j.jesf.2018.03.003
      Issue No: Vol. 16, No. 1 (2018)
       
  • The differences in physical activity levels in preschool children during
           free play recess and structured play recess

    • Authors: Megan L. Frank; Anna Flynn; Gregory S. Farnell; Jacob E. Barkley
      Pages: 37 - 42
      Abstract: Publication date: April 2018
      Source:Journal of Exercise Science & Fitness, Volume 16, Issue 1
      Author(s): Megan L. Frank, Anna Flynn, Gregory S. Farnell, Jacob E. Barkley
      Background Physical activity (PA) is important in reducing childhood obesity, yet a majority of children are not meeting PA guidelines. Schools have been identified as a place to promote childhood PA. The purpose of this study was to determine the best type of physically active recess period to increase preschool-aged children's PA. Methods PA was measured via accelerometers in preschool-aged children (n = 29) during three, 30-min recess conditions (control; structured play; free play) on separate school days. Tertile splits were performed based on PA during the free play condition and children were divided into three groups: highly, moderately and least active. Results For the aggregated sample, children were more (p ≤ 0.001) active during the free play (1282 ± 662 counts. min−1) and structured play (1416 ± 448 counts. min−1) recess versus the control condition (570 ± 460 counts. min−1) and activity was not different between the free play and structured conditions. However, children who were the most active during free play (1970 ± 647 counts·min−1) decreased (p ≤ 0.05) activity during structured play (1462 ± 535 counts·min−1), whereas children who were moderately active (1031 ± 112 counts·min−1) or the least (530 ± 239 counts·min−1) active during free play increased activity during structured play (1383 ± 345 counts·min−1 moderately active, 1313 ± 413 counts·min−1 least active). Conclusion Providing a physically-active recess period will contribute to preschool-aged children meeting the recommended PA guidelines; however, different children may respond in a different way based upon the structure of the recess period.

      PubDate: 2018-04-16T01:00:33Z
      DOI: 10.1016/j.jesf.2018.03.001
      Issue No: Vol. 16, No. 1 (2018)
       
  • Low ALT blood levels are associated with lower baseline fitness amongst
           participants of a cardiac rehabilitation program

    • Authors: M. Kogan; R. Klempfner; D. Lotan; Y. Wasserstrum; I. Goldenberg; G. Segal
      Pages: 1 - 4
      Abstract: Publication date: April 2018
      Source:Journal of Exercise Science & Fitness, Volume 16, Issue 1
      Author(s): M. Kogan, R. Klempfner, D. Lotan, Y. Wasserstrum, I. Goldenberg, G. Segal
      Background Objective assessment tools for patients' frailty are lacking. Such tools would have been highly valuable for assessment of candidates for cardiac rehabilitation programs. Low ALT (Alanine aminotransferase) values were recently shown to be a promising parameter for objective, quantitative frailly assessment. Aim & Methods This was a retrospective study of patients participating in a cardiac rehabilitation program. We aimed to assess the potential correlation between the baseline ALT values and the baseline exercise capacity, as expressed in METs (Metabolic equivalent of tasks). Results 3806 patients were included in our study. Patients with lower ALT activity levels at the initiation of rehabilitation program had lower estimated METs values (6.86 vs. 7.73; p < 0.001), shorter stress test duration (06:41 vs. 07:44 min; p < 0.001), higher resting heart rate (72 ± 13 vs. 70 ± 13 BPM; p = 0.01) and lower heart rate reserve (49 ± 24 vs. 54 ± 24; p < 0.001). Multivariate linear modeling demonstrated that ALT values were Independent determinants of baseline exercise capacity (expressed in METs). Conclusion Lower ALT values, measured prior to the initiation of cardiac rehabilitation programs may indicate frailty of patients and be indicative for poor rehabilitation outcomes. Further, prospective studies should assess the potential correlation between ALT values and rehabilitation efficiency.

      PubDate: 2017-12-05T05:48:48Z
      DOI: 10.1016/j.jesf.2017.11.002
      Issue No: Vol. 16, No. 1 (2017)
       
  • Effects of jaw clenching wearing customized mouthguards on agility, power
           and vertical jump in male high-standard basketball players

    • Authors: Bernat Buscà; Daniel Moreno-Doutres; Javier Peña; Jose Morales; Mònica Solana-Tramunt; Joan Aguilera-Castells
      Pages: 5 - 11
      Abstract: Publication date: April 2018
      Source:Journal of Exercise Science & Fitness, Volume 16, Issue 1
      Author(s): Bernat Buscà, Daniel Moreno-Doutres, Javier Peña, Jose Morales, Mònica Solana-Tramunt, Joan Aguilera-Castells
      Background Basketball players commonly use mouthguards for protecting their mouths from collisions with other players. Besides, literature reports that specific types of mouthguards may become an ergogenic device that facilitates a powerful jaw clenching, and a subsequent concurrent activation potentiation through this remote voluntary contraction of the mandible muscles. Methods A randomized within-subjects design was used to study the effects of this mechanism on muscular performance (vertical jump, agility, bench press power and leg press power) into two different conditions (mouthguard and no mouthguard) in high-standard basketball players (n = 13). A mean differences analysis and a responder analysis were conducted. Results Significant improvements were found (p < 0.05) in all vertical jump protocols using the mouthguard when compared to the no mouthguard conditions. However, no significant differences were found between the two conditions in agility and power (except in one load of bench press). Nevertheless, p-values were closer to statistical significance when analyzing the total time for the agility T-Test than when the first split time was under consideration (p = 0.111 and p = 0.944, respectively). Conclusion This study demonstrated that the use of custom-made, bite-aligning mouthguard had an ergogenic effect on jump outcomes and inconclusive results in agility T-Test in professional basketball players. From the results obtained in the present study, the use of this type of mouthguards seems to be more justified in power actions on the court than in the strength and conditioning sessions at the gym in well-trained players.

      PubDate: 2017-12-05T05:48:48Z
      DOI: 10.1016/j.jesf.2017.11.001
      Issue No: Vol. 16, No. 1 (2017)
       
 
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