EFFECTS OF RESISTANCE TRAINING ON LIPOPROTEIN-LIPID PROFILE AND BONE MINERAL DENSITY IN MIDDLE-AGED WOMEN 520

Abstract

The purpose of this study was to investigate the effects of resistance training on body composition, aerobic capacity, lipoprotein-lipid profile and bone mineral density (BMD) in middle-aged women. Eight healthy, middle-aged women (MT; aged 48±6 yrs.mean±SD) who performed resistance training and 12 age-matched untrained women (MC; 47±3 yrs) participated in this study. That the volume of resistance training in MT was relatively high was indicated by higher heart rate (115 bpm) and blood lactate levels (4. 1mM) during resistance training. Lean body mass (LBM) and relative body fat (% fat), peakVo2, high-density lipoprotein cholesterol (HDL-C) and BMD of lumber spine (L2-L4) were measured. LBM of MT was significantly larger than those of the control (44±5 vs 38±4 kg, P<0.05).%fat was lower in MT than in MC. PeakVo2 expressed in ml/kg/min were significantly higher in MT than in MC (34±6 vs 29±2 ml/kg/min, P<0.01). MT had significantly higher HDL-C (67±12 vs 58±18 mg/dl, P<0.05) and lower low-density lipoprotein cholesterol (LDL-C) (110±38 vs 132±30 mg/dl, P<0.05) and lower LDL-C/HDL-C ratio than did MC(1.67±0.52 vs 2.26±0.81, P<0.05). BMD of MT was significantly higher than those of MC (1.10±0.18 vs 0.95±0.13 g/cm2, P<0.05). These results indicate that resistance training has favorable effects on body composition, aerobic capacity, lipoprotein-lipid profile and BMD in middle-aged women.