The aim of this study is to evaluate the effect of submaximal aerobic exercise with and without external loading on bone metabolism and balance in postmenopausal women with osteoporosis (OP). Thirty-six volunteer, sedentary postmenopausal women with OP were randomly divided into three groups: aerobic, weighted vest, and control. Exercise for the aerobic group consisted of 18 sessions of submaximal treadmill walking, 30 min daily, 3 times a week. The exercise program for the weighted-vest group was identical to that of the aerobic group except that the subjects wore a weighted vest (4-8 % of body weight). Body composition, bone biomarkers, bone-specific alkaline phosphatase (BALP) and N-terminal telopeptide of type 1 collagen (NTX), and balance (near tandem stand, NTS, and star-excursion, SE) were measured before and after the 6-week exercise program. Fat decreased (p = 0.01) and fat-free mass increased (p = 0.005) significantly in the weighted-vest group. BALP increased and NTX decreased significantly in both exercise groups (p ≤ 0.05). After 6 weeks of exercise, NTS score increased in the exercise groups and decreased in the control group (aerobic: +49.68 %, weighted vest: +104.66 %, and control: -28.96 %). SE values for all directions increased significantly in the weighted-vest group. Results showed that the two exercise programs stimulate bone synthesis and decrease bone resorption in postmenopausal women with OP, but that exercise while wearing a weighted vest is better for improving balance.
Objectives:The primary purpose of this study was to determine the methods and means of prevention and treatment of coronary artery disease. In this study, we used a new regimen on heart rate and functional capacity of patients after myocardial infarction. This study also determines the effect of a new regimen on these factors.
Methods:The cross sectional study was designed to assess the clinical trials before and after intervention. The effect of our new regimen was assessed according to method of Bruce stress test. The values of heart rate and functional capacity before and after intervention were compared.
Results:The Bruce stress test revealed a significant increase in functional capacity of the participants. The criterion deviation in functional capacity variable was 13.19±2.242 METS and 24.42±6.00 METS before and after the training sessions, respectively. A rise in the amount of METS (body oxygen survey at rest state equal to 3.5 milliliter oxygen to each kg person weight at minute) from secondary post test to primary test was observed (P<0.05). There was a decrease in heart rate after ten sessions of training. The criterion deviation and average of the heart rate variable was 83.30±11.71 and 81.60±13.45 before and after the sessions, respectively (P<0.05).Discussion: Cardiac rehabilitation can increase the performance of blood circulation and uptake of oxygen in body. Due to these changes, there was a significant increase in the functional capacity and an insignificant reduction in the heart rate.
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