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The Effects of Environmental Condition on Performance in Soccer
Published in Youlian Hong, Routledge Handbook of Ergonomics in Sport and Exercise, 2013
Billy Sperlich, Dennis-Peter Born
Based on the aforementioned findings, the following recommendations can be provided to players and coaches to counteract heat stress: Heat exposure and dehydration do not appear to affect single power tasks but have detrimental effects on repeated sprint and jumping exercises, prolonged endurance exercise, cognitive functions and soccer-specific performance.Heat-acclimatized athletes experience greater fluid loss due to improved sweating; the elevated risk of dehydration emphasizes the need for additional fluid intake.The loss of 1 kg of body mass due to dehydration should be replaced by 1.5 L of fluid. Pale rather than dark urine colour may serve as a practical indicator of (re-)hydration.A sport drink should contain 500–700 mg.L−1 of sodium and 0.7 g.kg−1.h−1 carbohydrates.Players should be allowed 1–2 weeks of heat acclimatization in the target climate zone, via training camps under conditions with similar temperature conditions or by training with extra clothing or general exposure to heat (e.g. sauna).When playing in the heat, extra clothing underneath the normal sports dress should be avoided.The use of bright-coloured and loose-fitting jerseys instead of dark and tight clothing is recommended.Cooling before a game and during the half-time break with cold drinks, cooling packs and cooling vests helps to improve heat storage capacity and enhances performance.
Fluid intake is a strong predictor of outdoor team sport pre-season training performance
Published in Journal of Sports Sciences, 2023
Luke Badham, Steven E. Stern, Fergus K. O’Connor, Gyan A. Wijekulasuriya, Glenn Corcoran, Gregory R. Cox, Vernon G. Coffey
In conclusion, our data are the first to show the effects of fluid intake on work completed during field-based outdoor team sport training. We have demonstrated lower and upper limits of fluid intake that are strong predictors of improved running performance during extended sessions beyond which work completed may be impaired or diminished. It appears that most outdoor team sport athletes fail to match fluid loss during training, and we provide a practical ingestion range closely associated with better physical performance. Improved hydration practices during training sessions should be beneficial to the quality of training throughout pre-season preparation, which may translate to greater physical performance capacity in outdoor team sport competition.
Body composition, metabolism, sleep, psychological and eating patterns of overtraining syndrome: Results of the EROS study (EROS-PROFILE)
Published in Journal of Sports Sciences, 2018
Flavio A. Cadegiani, Claudio E. Kater
Better hydration is a likely conditioning process to improve water supply during intense exercise, and may help support the progressive improvement in performance (Cheung et al., 2015; Moyen et al., 2015). However, improvement in hydration is partially lost during OTS, resulting in less availability of water during exercise, which may also explain the decreased performance (31,32). Whether the partial loss of the increase in hydration was due to a decrease in water ingestion or diminished water retention within the cells remains unclear, since we did not investigate mean water or liquid intake.
Preparation and evaluation of a nanoemulsion containing cordycepin and its protective effect on skin
Published in Journal of Dispersion Science and Technology, 2023
Hucheng Zhang, Lina Deng, Jun Yang, Guowei Yang, Haitao Fan, Yiqi Yin, Shuai Luo, Shuangshi Li, Linying Liu, Ming Yang
The dry skin of volunteers had a parched look caused by inability to retain moisture. The skin felt “tight” and uncomfortable after washing unless some type of moisturizer or skin cream was applied. The skin wrinkles diminished after the first week of moisturizer application. Thus, the moisturizers in our nanoemulsion improved the skin appearance (Supplementary material, S8). Improvement in skin appearance indicated increased hydration.