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performance

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This observational study used field tests to investigate the association between physiological parameters and rowing performance in athletes during ergometer and on-water Swiss national competitions. 25 Participants between 15 and 35 years who compete at national level were recruited among different clubs. We assessed anthropometric parameters such as weight, height, aerobic capacity during an incremental test on a rowing ergometer, anaerobic capacity during an on rowing ergometer Wingate test and lower limb strength and power during countermovement- and squat jumps.
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Background: The development of Mountain Ultra Marathon (MUM) raises several questions to health professionals, regarding the short or long-term consequences on the health of participants. Objective: to present the main acute and long-term effects of MUM on the main health issues usually studied among runners. Methods: Pragmatic review of the literature, including grey literature from the medical staff of the races, notably the Ultra-trail du Mont Blanc. Results:
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In cardiopulmonary exercise testing with children and adolescents, age specific protocols are used together with tools adjustable to their body dimension and development. Assessing weight, height und pubertal stage is a prerequisite for the interpretation of every test. Indications for exercise testing are airway symptoms and findings limited performance, chronic diseases, planning of trainings and scientific studies. The more tests are standardized and used on a large scale, the more normal values are available to compare individual results. However, the interindividual variability of measured values is high, depending as much from the developmental stage of the individual as from protocols, tools and the performing laboratory.
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Endurance testing has a long tradition in the Swiss Orienteering Federation. It has become an important tool in monitoring effectiveness of training and in assessing endurance performance. The vast majority of athletes and coaches indicate that sport science is meaningful and endurance testing is of high informative value for them. Endurance testing is regularly done in the lab, but also field tests are carried out each year. They particularly empower and support athletes in their specific preparation for important competitions. Also in the future new competition formats can be prepared and training may be monitored by a new format of specific tests. In various endurance sports physiological demands may be similar.
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Exercise testing in athletes and patients is an important and valuable diagnostic tool in the hand of the physician and sport scientist. A close collaboration between sport scientist and sport physician creates a win-win-win-situation for athletes and patients and professionals equally. According to the demands of the sport an incremental lactate threshold test (determination of the anaerobic threshold), testing of ­VO2max and performance at VO2max, and a testing of aerobic capacity (performance at competitional level) are the tests of choice. All tests need to be valid, reliable and sport specific. Sport specificity in testing is for practical purposes the most important.
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Recording the endurance lactate concentration has for some 40 years now been considered the most sensitive parameter for identifying and differentiating the aerobic capacity in muscle metabolism. Lactate behavior or the lactate-running-speed ratio is influenced under lab conditions both by the shock absorption of the specific treadmill type, the treadmill angle of inclination, and outdoors by the ground conditions. What is decisive for both indoor and outdoor measurements is the integrative lactate behavior.
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Background: Vitamin D concentrations corresponding to 75 nmol/L of 25(OH)D or more have been related to maintained muscle function, growth and regeneration, to optimal bone health and immunology in athletes. The objective of this study was to investigate prevalence and predictors of insufficient 25(OH)D concentrations in athletes and to come up with recommendations for our Swiss athletes. Methods: 603 competitive Swiss athletes were assessed during their annual pre-participation examination. A standardized questionnaire was used to gather information about potential predictors for 25(OH)D concentrations.
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Background: Heart rate variability (HRV) as a measure of the cardiac autonomic nervous system activity (CANA) has the potential to tailor endurance training and may contribute to the prevention of overtraining. We aimed to investigate whether there are sex differences and sex-specific reactions of the CANA to different training periods (TPs) in Swiss elite runners. Methods: Two HRV measurements (each 5 minutes supine and 5 minutes standing) per athlete were performed, the first during preparation period (PP) and the second during competition period (CP).
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To counter progressive dehydration and thirst, athletes drink during exercise. However, despite decades of scientific research, there is still no conclusive answer regarding how much we should drink to optimize performance. The goal of this review article is to analyze the arguments underpinning contrasting perspectives and to critically analyze the available evidence. It seems that the respective argumentations of contrasting viewpoints are based on a different selective fraction of the available evidence.
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As soon as he prescibes medicine to an athlete, any physician is confrounted if he wants or not, and if he is aware of it or not, with the numerous and often complex rules treating with the universal fight against doping. In case of an involountary mistakee or not, the doctor can be involved in very unpleasant situations over different regulations. As ignorance is no valid defense form, it seems obvious that it is very imporant that each practitionner is informed the better possible about these legal aspects. This is the objective of the following presentation.
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