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- Title
Dose walking exercise improves BMD of young obese and thin women?
- Authors
Habibzadeh, N.; Rahmani-Nia, F.; Daneshmandi, H.
- Abstract
The purpose of the present study was to examine the effect of a walking program on BMD in order to prevent bone loss among sedentary obese and thin women. Forty untrained obese (n=20) and thin (n=20) women, 20-25 years, volunteered to participate in this study. Subjects were matched for BMI and randomly assigned to two exercise (obese=10, thin=10) and two control (obese=10, thin=10) groups. Before and after the training program anthropometric and blood parameters were measured. Bone mass density also was evaluated by dual-energy X-ray absorptiometry (DXA) .Each walking session was 30 min long at an intensity corresponding to 50-75% of maximal age adjusted heart rate, 3 days per week for 2 months. After 2 months of exercise, no differences were observed in BMD at weight-bearing sites in the spine (L2- L4) and hip (p>0.05). Also no significant differences emerged in the blood parameters in either group (p>0.05). Percent body fat, fat mass and lean mass were affected positively by the exercise program compared with the control groups (all p = 0.000). This study demonstrated that walking exercise has not significantly reduced the risk of bone loss in young women. However further studies are needed to evaluate the efficacy of walking exercise on bone quality and the risk of bone loss as an exercise-related effect in different obese and thin groups.
- Subjects
PHYSIOLOGICAL aspects of walking; PHYSICAL training &; conditioning; WEIGHT lifting; ANTHROPOMETRY; BONE density; OBESITY in women; PREVENTION
- Publication
International Journal of Fitness, 2010, Vol 6, Issue 2, p53
- ISSN
0973-2152
- Publication type
Article