Results 251 to 260 of about 32,991 (283)

Effects of Caffeine on Anaerobic Exercise in Boys

Pediatric Exercise Science, 2012
The effects of caffeine on anaerobic exercise in young boys was investigated. Twenty-four healthy 8–10 year old boys participated in a randomized doubleblind, double-crossover, counter-balanced study. Each subject received the caffeinated drink (CAF—5 mg · kg−1) or placebo (PL) twice each on four separate visits.
Kenneth R, Turley, Joey D, Rivas, Jeremey R, Townsend, Aaron B, Morton, Jason W, Kosarek, Mark G, Cullum   +5 more
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Aerobic and anaerobic metabolism in exercising dogs

Journal of Applied Physiology, 1964
For an analysis of the energy expenditure as related to the work performance in exercising dogs, the O2 consumption and the lactic acid production were determined at rest and during running on a treadmill at varying speeds (from 4 to 16 km/hr) and inclines (from 0 to +20%).
P, CERRETELLI, J, PIIPER, F, MANGILI, B, RICCI   +3 more
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Anaerobic exercise in pediatric cystic fibrosis

Pediatric Pulmonology, 2003
AbstractAnaerobic fitness is important for daily functioning of children with cystic fibrosis (CF). The aim of this study was to assess the determinants of anaerobic performance in CF. Anaerobic performance was measured in 39 children with CF (mean age, 13.2 ± 1.8 (SD) years, forced expired volume in 1 sec (FEV1) 81.6 ± 22.1% predicted), using a ...
Peter H, Klijn, Suzanne W, Terheggen-Lagro, Cornelis K, Van Der Ent, Janjaap, Van Der Net, Jan L, Kimpen, Paul J, Helders   +5 more
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Creatine Is an Ergogen for Anaerobic Exercise

Nutrition Reviews, 2009
Throughout history, athletes have searched for performance-enhancing agents. Recently, creatine (N-[aminoiminomethyl]-N-methyl glycine) has been marketed as an ergogenic dietary supplement. There appears to be scientific merit to the claim that creatine is ergogenic when taken in large amounts.
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Aerobic exercise, anaerobic exercise and the lactate threshold

British Medical Bulletin, 1992
All exercise draws first on intramuscular stores of ATP and creatine phosphate; initially these are replenished by anaerobic glycolysis. The lactic acid produced contributes to the rapid development of fatigue in high intensity exercise. Aerobic metabolism (at first mainly of glycogen, later increasingly of fat) is the principal route of ATP ...
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Muscle Deoxygenation in Aerobic and Anaerobic Exercise

1998
It has been generally accepted that the use of oxygen is a major contributor of ATP synthesis in endurance exercise but not in short sprints. In anaerobic exercise, muscle energy is thought to be initially supported by the PCr-ATP system followed by glycolysis, not through mitochondrial oxidative phosphorylation.
S, Nioka, D, Moser, G, Lech, M, Evengelisti, T, Verde, B, Chance, S, Kuno   +6 more
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The Anaerobic Threshold Measurement in Exercise Testing

Clinics in Chest Medicine, 1984
The exercise intensity (VO2) above which aerobic energy production starts to be supplemented by anaerobic mechanisms is termed the anaerobic threshold (AT). Lactic acid is produced at an increased rate above this work level. Since this acid is almost completely buffered by HCO-3, the rate of CO2 production increases in excess of that being derived from
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Reproducibility of Post-Exercise Lactate and Anaerobic Threshold

International Journal of Sports Medicine, 1988
To test the effect of previous strenuous training on lactate (LA) formation and on changes of lactate threshold (AT) values, a group of seven male athletes aged 26.3 +/- 9.2 years, height 184 +/- 6.2 cm, body weight 79.3 +/- 8.1 kg, percentage of body fat 8.8 +/- 3.7 and VO2 max 56.2 +/- 5.4 ml/kg were examined on a treadmill to the maximum in the ...
J, Fric, J, Fric, F, Boldt, H, Stoboy, W, Meller, F, Feldt, W, Drygas   +6 more
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The Effect of Caffeine as an Ergogenic Aid in Anaerobic Exercise

International Journal of Sport Nutrition and Exercise Metabolism, 2008
The study examined caffeine (5 mg/kg body weight) vs. placebo during anaerobic exercise. Eighteen male athletes (24.1 ± 5.8 yr; BMI 26.4 ± 2.2 kg/m2) completed a leg press, chest press, and Wingate test. During the caffeine trial, more total weight was lifted with the chest press, and a greater peak power was obtained during the Wingate test.
Kathleen, Woolf, Wendy K, Bidwell, Amanda G, Carlson   +2 more
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Anaerobic metabolism of the respiratory muscles during exercise

Medicine & Science in Sports & Exercise, 1984
Although minute ventilation (VE) exhibits marked increases during heavy rhythmic exercise utilizing a large muscle mass, the extent to which this hyperpnea stresses the respiratory muscles remains controversial. In an attempt to resolve this matter, we measured arterial blood lactate concentration during seated isocapnic reproduction of peak exercise ...
B J, Martin, H I, Chen, M A, Kolka
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