تاثیر فعالیت جسمانی در زمانهای متفاوت با وضعیت تغذیه ای گوناگون بر عوامل خطر قلبی و عروقی در زنان میانسال پرخطر

عنوان انگليسی

The effects of different times interval of physical activity in diverse nutritional status on cardio-vascular risk factors in high-risk middle aged women

خلاصه انگلیسی

Today, cardiovascular diseases are one of the major causes of mobility and mortality in the developed countries. Also, the beneficiary effects of physical activities on risk factors associated with these diseases are well documented; little is known about the engagement time and nutrition status of the subjects in such activities. Therefore, this research was conducted to determine the effects of engagement time under various nutrition statuses in which desirable responses occur. In this study 31 sedentary women who had at least one of the risk factors associated with the cardiovascular diseases were selected as the subjects for this research. They participated in an aerobic exercise program with intensity between 60-70% of their maximum heart rate. The program included 1 h session of exercise, three times a week for 18 weeks. The subjects were randomly assigned into three groups, including the exercise condition 1- in the early morning prior to consuming breakfast; exercise condition 2- fed 5 h following lunch in the afternoon and the control group with no exercise protocol. All the subjects completed the research project. Triglyceride, HDL, LDL level of the blood of the subjects as the factors associable with the incidence of cardiovascular disease was measured at 6, 12 and 18 weeks following the start of exercise program. The beneficiary effects of participation in physical activities in the fasting condition in the morning was statistically more significant than the fed group in regard to the level of HDL following the 18 weeks. In addition, the level of blood cholesterol and lipid varied significantly in both exercise groups following 6 and 12 weeks of exercise, whereas these changes were significantly more significant in the fasting group(p< 0.05). The level of blood LDL did not change significantly in all groups. Cholesterol, lipids and LDL density variation due to the participation in physical activities is not dependent upon the morning or afternoon engagement. However, the beneficence effects of such activities on HDL level changes may be more pronounced during the fasting status.

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