Serious adverse events were rare , and no serious events were reported to be directly related to the exercise programme .
This review provides evidence that PRT is an effective intervention for improving physical functioning in  older people , including improving strength and the performance of some simple and complex activities .
BACKGROUND Muscle weakness in old age is associated with physical function decline .
Progressive resistance strength training ( PRT ) exercises are design ed to increase strength .
OBJECTIVES To assess the effects of PRT on older people and identify adverse events .
Effects of resistive training and chromium picolinate on body composition and skeletal muscle size in older women.
This study assessed the effect of resistive training ( RT ) , with or without highdose chromium picolinate ( Cr-pic ) supplementation , on body composition and skeletal muscle size of older women . Seventeen sedentary women , age range 54 - 71 years , BMI 28.8 + /- 2.4 kg/m2 , were r and omly assigned ( double-blind ) to groups ( Cr-pic , n = 9 ; Placebo , n = 8) that consumed either 924 micrograms Cr/d as Cr-pic or a low-Cr placebo ( < 0.2 microgram Cr/d ) during a 12-week RT program ( 2 day/week , 3 sets.exercise-1.d-1 , 80 % of 1 repetition maximum ) . Urinary chromium excretion was 60-fold higher in the Cr-pic group , compared to the Placebo group ( p < .001 ) , during the intervention . Resistive training increased maximal strength of the muscle groups trained by 8 to 34 % ( p < .001 ) , and these responses were not influenced by Cr-pic supplementation . Percent body fat and fat-free mass were unchanged with RT in these weight-stable women , independent of Cr-pic supplementation . Type I and type II muscle fiber areas of the m. vastus lateralis were not changed over time and were not influenced by Cr-pic supplementation . These data demonstrate that high-dose Cr-pic supplementation did not increase maximal strength above that of resistive training alone in older women . Further , these data show that , under these experimental conditions , whole body composition and skeletal muscle size were not significantly changed due to resistive training and were not influenced by supplemental chromium picolinate
Serious adverse events were rare , and no serious events were reported to be directly related to the exercise programme .
This review provides evidence that PRT is an effective intervention for improving physical functioning in  older people , including improving strength and the performance of some simple and complex activities .
BACKGROUND Muscle weakness in old age is associated with physical function decline .
Progressive resistance strength training ( PRT ) exercises are design ed to increase strength .
OBJECTIVES To assess the effects of PRT on older people and identify adverse events .