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The purpose of the present study was to define the optimal loads (OL) for eliciting maximal power-outputs (PO) in the leg and arm modes of the 30 s Wingate Anaerobic Test (WAnT). Eighteen female and seventeen male physical education students, respectively 20.6±1.6 and 24.1±2.5 years old, volunteered to participate. In each of the total five sessions, the(More)
This study was performed to determine whether a) children voluntarily dehydrate while exercising in hot climate; b) such dehydration affects their well-being and thermoregulation. Eleven 10p to 12-yr old, partially acclimatized boys underwent two work-in-the-heat protocols (cycle rides, 45% aerobic capacity at 39 degrees C, 45% rh). During one session they(More)
Children recover from physical exertion faster than adults, especially, from high-intensity exercise. It is argued that, qualitatively, this is due mainly to dimensional differences but that, predominantly, it is a quantitative difference, stemming from the lower relative power children can generate and from which they need to recover. Children's lesser(More)
The purpose of this study was to evaluate the extent of anaerobic glycogenolysis, as indicated by intramuscular lactate concentration, after 10 and 30 s of supramaximal exercise and to compare male and female subjects in this regard. Fifteen males and seven females performed two cycle exercise bouts against a resistance which was standardized so that one(More)
The purpose of this study was to quantify the changes in selected intramuscular metabolites associated with non-oxidative energy metabolism after performance of the Wingate Test (WT), a widely used, exhaustive, 30-s cycle test of short-time muscular power. Muscle biopsies were taken from the m. vastus lateralis of nine female physical education students at(More)
Two heat-acclimatization protocols were studied in 8- to 10-yr-old boys: exercise in dry heat (WH, n = 9) and exercise in neutral climate (W, n = 9). Five 90-min acclimatization sessions were conducted within a 12-day period. Base-line (BL) and criterion (CT) tests sessions were held at 43 degrees C db and 24 degrees C wb, with three 20-min exercise bouts(More)
Fifteen male long-distance runners, 35.9 +/- 8.2 years of age, participated in the study. They had 5.7 +/- 2.3 years of running experience, marathon best time of 2,58:51 +/- 0,14:45 h, 10-km personal record of 37:18 +/- 2:50 min, and maximal aerobic power of 64.6 +/- 5.8 ml.kg-1.min-1. Their 4 mM.l-1 lactate threshold (OBLA) was tested twice in a randomized(More)
The 30-year-old Wingate anaerobic test (WAnT) has proven a useful and a much-needed tool in the exercise physiology lab. However, the WAnT suffers from difficulties that partially stem from its original design but are mainly due to a large array of highly non-standardized procedures and the use of different testing modalities—mainly mechanically versus(More)
The purpose of this study was to investigate the effect of pre-test carbohydrate (CHO) ingestion on anaerobic-threshold assessment using the lactate-minimum test (LMT). Fifteen competitive male distance runners capable of running 10 km in 33.5-43 min were used as subjects. LMT was performed following CHO (2x300 mL, 7% solution) or comparable placebo (Pl)(More)