Does Creatine Supplementation Improve Functional Capacity in Elderly Women?

• Autores: Luis López Mojares, Margarita Pérez Ruiz, Félix Gómez Gallego, Silvia Cañete, Alejandro San Juan Ferrer
• Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 20, Nº. 1, 2006, págs. 22-28
• Idioma: inglés
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• Resumen

  • Cañete, S., A.F. San Juan, M. Pérez, F. Gómez-Gallego, L.M. López-Mojares, C.P. Earnest, S.J. Fleck, and A. Lucia. Does creatine supplementation improve functional capacity in elderly women? J. Strength Cond. Res. 20(1):22-28. 2006.- The purpose of this study was to determine the effects of short-term (7 days) oral creatine supplementation (0.3 g·kg?1) in elderly women during exercise tests that reflect functional capacity during daily living tasks. We assessed several indices of endurance capacity (1-mile walk test, gross mechanical efficiency, ventilatory threshold, and peak oxygen intake determined during cycle-ergometry) and lower-extremity functional performance (time to complete sit-stand test). Subjects were assigned to a creatine (n = 10; age 67 ± 6 years) or placebo (n = 6; age 68 ± 4 years) group. We found a significant improvement only after creatine loading in the sit-stand test (placebo: 9.7 ± 0.9 seconds for pretest and 9.3 ± 0.7 seconds for posttest, p > 0.05; creatine: 10.0 ± 0.7 seconds for pretest and 8.8 ± 1.1 seconds for posttest). Significance was recorded at p < 0.05 for the interaction effect (group [creatine, placebo] × time [pretest, posttest]). In elderly women, short-term oral creatine supplementation does not improve endurance capacity but increases the ability to perform lower-body functional living tasks involving rapid movements.