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The differences in physical activity levels in preschool children during free play recess and structured play recess
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. (Source: Journal of Exercise Science and Fitness)
Source: Journal of Exercise Science and Fitness - March 27, 2018 Category: Sports Medicine Source Type: research

The relationship between ventilatory threshold and repeated-sprint ability in competitive male ice hockey players
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. (Source: Journal of Exercise Science and Fitness)
Source: Journal of Exercise Science and Fitness - March 16, 2018 Category: Sports Medicine Source Type: research

Perceived physical literacy instrument for adolescents: A further validation of PPLI
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. (Source: Journal of Exercise Science and Fitness)
Source: Journal of Exercise Science and Fitness - March 15, 2018 Category: Sports Medicine Source Type: research

The effect of a 12-week combinational exercise program on CD4 count and mental health among HIV infected women: A randomized control trial
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. (Source: Journal of Exercise Science and Fitness)
Source: Journal of Exercise Science and Fitness - February 10, 2018 Category: Sports Medicine Source Type: research

Influence of recovery duration during 6-s sprint interval exercise on time spent at high rates of oxygen uptake
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. (Source: Journal of Exercise Science and Fitness)
Source: Journal of Exercise Science and Fitness - February 2, 2018 Category: Sports Medicine Source Type: research

Effects of ambient particulate matter on aerobic exercise performance
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. (Source: Journal of Exercise Science and Fitness)
Source: Journal of Exercise Science and Fitness - January 7, 2018 Category: Sports Medicine Source Type: research

Effects of jaw clenching wearing customized mouthguards on agility, power and vertical jump in male high-standard basketball players
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. (Source: Journal of Exercise Science and Fitness)
Source: Journal of Exercise Science and Fitness - December 2, 2017 Category: Sports Medicine Source Type: research

Low ALT blood levels are associated with lower baseline fitness amongst participants of a cardiac rehabilitation program
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. (Source: Journal of Exercise Science and Fitness)
Source: Journal of Exercise Science and Fitness - November 30, 2017 Category: Sports Medicine Source Type: research

Prevalence of overweight in Hong Kong Chinese children: Its associations with family, early-life development and behaviors-related factors
Conclusion The present study revealed a high prevalence of overweight in Hong Kong pediatric population and demonstrated the family resemblance in weight status. Further interventions and promotions should involve parents and consider the family as a unit to tackle childhood overweight. (Source: Journal of Exercise Science and Fitness)
Source: Journal of Exercise Science and Fitness - November 19, 2017 Category: Sports Medicine Source Type: research

The improvement of suspension training for trunk muscle power in Sanda athletes
Publication date: December 2017 Source:Journal of Exercise Science & Fitness, Volume 15, Issue 2 Author(s): Xiujie Ma, Wei Sun, An Lu, Pei Ma, Chuanyin Jiang The aim of this study was to investigate whether both suspension training (ST) and traditional training (TT) can improve Sanda athlete's strength quality of trunk muscles and to explore the effect of suspension training on Sanda athletes' trunk muscle power production. Twelve elite Sanda athletes from the Competitive Sports School of Shanghai University of Sport were randomly assigned to experimental group (EG) and control group (CG). EG and CG were reg...
Source: Journal of Exercise Science and Fitness - October 9, 2017 Category: Sports Medicine Source Type: research

Physical and physiological demands of futsal
The objective of this review is to examine key aspects of futsal such as match analysis, physiological demands, energy requirements, fitness measurements, and skill requirements. Futsal players experience fatigue as the game progresses due to the high-intensity nature of the game and the repeated maximal sprint efforts required. The intermittent nature of the sport necessitates the use of aerobic and anaerobic energy pathways throughout exercise. Therefore, a futsal player needs to have a great capacity of intermittent endurance, repeated sprint ability, and leg power, while technical aspects include the ability of high le...
Source: Journal of Exercise Science and Fitness - October 3, 2017 Category: Sports Medicine Source Type: research

The effect of exercises on left ventricular systolic and diastolic heart function in sedentary women: Step-aerobic vs core exercises
Conclusion 16 weeks of step-aerobic and core exercise showed significant changes of inflammatory and lipid markers with cardiac dimensions and had favorable effects on both left ventricular systolic function. Left ventricular diastolic function had more improved in SAG than the CEG. (Source: Journal of Exercise Science and Fitness)
Source: Journal of Exercise Science and Fitness - September 28, 2017 Category: Sports Medicine Source Type: research

Effects of prolonged running in the heat and cool environments on selected physiological parameters and salivary lysozyme responses
Conclusion This study found similar lysozyme responses between both hot and cool trials. Thus, room/ambient temperature did not affect lysozyme responses among recreational athletes. Nevertheless, the selected physiological parameters were significantly affected by room temperature. (Source: Journal of Exercise Science and Fitness)
Source: Journal of Exercise Science and Fitness - September 2, 2017 Category: Sports Medicine Source Type: research

Effectiveness of physical activity intervention among government employees with metabolic syndrome
Conclusion The findings of this study suggest that physical activity intervention via aerobics classes is an effective strategy for improving step counts and reducing the prevalence of metabolic syndrome. (Source: Journal of Exercise Science and Fitness)
Source: Journal of Exercise Science and Fitness - August 19, 2017 Category: Sports Medicine Source Type: research

High-sensitivity cardiac troponin T release after a single bout of high-intensity interval exercise in experienced marathon runners
Conclusion HIIE at 90% vVO2max interspersed with 50% vVO2max for recovery can elicit hs-cTnT elevation. HR is a good predictor of exercise-induced cardiac troponin (cTn) release under fixed exercise intensity. Further study should consider to correct for HR when constructing impact factors contributing to exercise-induced cTn release. (Source: Journal of Exercise Science and Fitness)
Source: Journal of Exercise Science and Fitness - August 19, 2017 Category: Sports Medicine Source Type: research