Heavy-resistance training in older Scandinavian men and women: short- and long-term effects on arm and leg muscles.

摘要: The short- and long-term effects of heavy-resistance training (85% one-repetition maximum (RM)) on elbow flexion knee extension dynamic isokinetic strength morphology in the biceps brachii vastus lateralis muscles were evaluated during 1 year 35 Scandinavian men women, aged 70-77 years, 12 whom formed a control group. After first 11 weeks (n = 23; 3 times/week) (1 RM) had increased [mean +/- SD] 49% 16 163% 75, respectively, with no significant difference between women. For following 27 weeks, was maintained one session per week 12) but dropped without 11). final 11; times/week), further 32% both arm leg. Isokinetic measurements (Cybex II; 30 degrees/s) revealed similar smaller gains than for strength. Muscle biopsies 20) taken at start after showed increase area type 2 fibers muscle positive correlation percentage proportional In conclusion, older women have high capacity to improve maintain strength, some which is mediated through an adaptation fiber population.