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 .
Twice-weekly progressive resistance training decreases abdominal fat and improves insulin sensitivity in older men with type 2 diabetes.
OBJECTIVE To evaluate the influence of a twice-weekly progressive resistance training ( PRT ) program , without a concomitant weight loss diet , on abdominal fat and insulin sensitivity in older men with type 2 diabetes . RESEARCH DESIGN AND METHODS Nine older men ( aged 66.6 + /- 3.1 ) with type 2 diabetes participated in a 16-week PRT supervised program ( 50 - 80 % of the one repetition maximum ) , for all main muscle groups .  Basal glycemia , HbA(1c ) , diet , habitual physical activity , body composition , and upper/lower maximal strength were measured . Insulin sensitivity was determined according to Bergman 's minimal model procedure and abdominal fat was obtained by computed tomography . The measurements were taken 4 weeks before training ( -4 ) , immediately before training ( 0 ) , and at 8-week intervals ( i.e. , weeks 8 and 16 ) during the 16-week training period . RESULTS No significant variation was observed in any of the above selected parameters during the 4-week control period . After PRT , both leg and arm maximal strength increased significantly by 17.1 and 18.2 % , respectively . Visceral and subcutaneous abdominal fat decreased significantly by 10.3 % ( from 249.5 + /- 97.9 to 225.6 + /- 96.6 cm(3 ) , P < 0.01 ) and by 11.2 % ( from 356.0 + /- 127.5 to 308.6 + /- 118.8 cm(3 ) , P < 0.01 ) , respectively , while no changes were observed in body mass . PRT significantly increased insulin sensitivity by 46.3 % ( from 2.0 + /- 1.2 to 2.8 + /- 1.6 . 10(4 ) . min(-1 ) . muU(-1 ) . ml(-1 ) , P < 0.01 ) , whereas it significantly decreased ( -7.1 % , P < 0.05 ) fasting blood glucose ( from 146.6 + /- 28.3 to 135.0 + /- 29.3 mg/dl ) . Finally , a 15.5 % increase in energy intake ( from 2,287.1 + /- 354.7 to 2,619.0 + /- 472.1 kcal/day , P < 0.05 ) was observed . CONCLUSIONS Two sessions per week of PRT , without a concomitant weight loss diet , significantly improves insulin sensitivity and fasting glycemia and decreases abdominal fat in older men with type 2 diabetes
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 .