Otro
Long-term creatine supplementation improves muscular performance during resistance training in older women
Registro en:
European Journal of Applied Physiology, v. 113, n. 4, p. 987-996, 2013.
1439-6319
10.1007/s00421-012-2514-6
WOS:000316124900019
2-s2.0-84876286727
Autor
Aguiar, Andreo Fernando
Januário, Renata Selvatici Borges
Junior, Raymundo Pires
Gerage, Aline Mendes
Pina, Fábio Luiz Cheche
Do Nascimento, Matheus Amarante
Padovani, Carlos Roberto
Cyrino, Edilson Serpeloni
Resumen
This study examined the effects of long-term creatine supplementation combined with resistance training (RT) on the one-repetition maximum (1RM) strength, motor functional performance (e.g., 30-s chair stand, arm curl, and getting up from lying on the floor tests) and body composition (e.g., fat-free mass, muscle mass, and % body fat using DEXA scans) in older women. Eighteen healthy women (64.9 ± 5.0 years) were randomly assigned in a double-blind fashion to either a creatine (CR, N = 9) or placebo (PL, N = 9) group. Both groups underwent a 12-week RT program (3 days week-1), consuming an equivalent amount of either creatine (5.0 g day-1) or placebo (maltodextrin). After 12 week, the CR group experienced a greater (P < 0.05) increase (Δ%) in training volume (+164.2), and 1RM bench press (+5.1), knee extension (+3.9) and biceps curl (+8.8) performance than the PL group. Furthermore, CR group gained significantly more fat-free mass (+3.2) and muscle mass (+2.8) and were more efficient in performing submaximal-strength functional tests than the PL group. No changes (P > 0.05) in body mass or % body fat were observed from pre- to post-test in either group. These results indicate that long-term creatine supplementation combined with RT improves the ability to perform submaximal-strength functional tasks and promotes a greater increase in maximal strength, fat-free mass and muscle mass in older women. © 2012 Springer-Verlag Berlin Heidelberg.
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