Benefits of caffeine ingestion on sprint performance in ... - Springer Link
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Benefits of caffeine ingestion on sprint performance in trained and untrained swimmers K. Collomp 1, S. Ahmaidi 1, J. C. Chatard 2, M. Audran 3, and Ch. Pr6faut 1 1 Service d'Exploration Fonctionnelle Respiratoire, H6pital Aiguelongue, Avenue Major Flandre, F-34059 Montpellier, France 2 Laboratoire de Physiologie du Sport, H6pital St. Jean Bonnefonds, St. Jean Bonnefonds, France 3 Laboratoire de Physique, Facult~ de Pharmacie, Montpellier, France Accepted December 11, 1991
Summary. The influence of specific training on benefits from caffeine (Caf) ingestion was examined during a sprint test in a group of highly trained swimmers (T) and compared with the response of a group o f untrained occasional swimmers (UT). Seven T and seven U T subjects swam freestyle two randomly assigned 2 × 100 m distances, at maximal speed and separated by 20 min o f passive recovery, once after Caf (250 rag) and once after placebo (Pla) ingestion. Anaerobic capacity was assessed by the mean velocity (meters per second) during each 100 m and blood was sampled from the fingertip just before and 1, 3, 5, 7, and 9 min after each 100 m for resting and maximal blood lactate concentration ( [ l a - ] b . . . . ) determination. The [ l a - ] b . . . . was significantly enhanced by Caf in both T and U T subjects (P
