نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی کارشناسی ارشد، فیزیولوژی ورزشی، گروه تربیت بدنی و علوم ورزشی، دانشکده ادبیات و علوم انسانی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران.
2 استادیار، گروه تربیت بدنی و علوم ورزشی، دانشکده تعلیم و تربیت، واحد اراک، دانشگاه آزاد اسلامی، اراک، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Purpose: The components of a diet can significantly impact body composition and enhance the performance of rowers. Coupled with appropriate sports exercises, this can lead to improved sports records in competitions. The aim of this study is to examine the impact of 8 weeks of specific exercises and mediator variables such as carbohydrates, iron, and vitamin D on anthropometric indices in athletes from the national rowing team in 2022.
Method: In this randomized clinical trial research, 44 male rowers who participated in the national team camp in 2022 were randomly assigned to 4 groups of 11 people: training, training with mediating variables, mediating with control variables. The selected exercise program consisted of high-intensity interval training (HIIT) for 8 weeks of rowing on an ergometer (for 1 minute at 100% vVO2max). The intake values of intermediate variables such as carbohydrate, iron, and vitamin D in the athletes' diet were assessed through the analysis of the menu of one week of the national team camp, the 24-hour food recall, and a food frequency questionnaire (FFQ) developed for rowing athletes using NUTRITION IV software. Anthropometric indicators (weight and percentage of fat tissue) were measured in all participants before the first training session and 48 hours after the last training session. Quantitative variables were compared using a one-way ANOVA test. The significance level was set at less than 0.05, and data analysis was conducted using SPSS version 24 software.
Findings: Forty-four male rowers with an average age of 26.52±2.18 years participated in
this study. The body fat percentage of the rowers decreased in all groups after the test compared to
the pre-test, and this decrease was found to be significant in all groups except the mediating variables group (P≤0.05). Eight weeks of HIIT training did not have a significant effect on weight changes compared to the control group in rowers (P=0.77), but a significant effect was observed
on the reduction of fat percentage (P=0.00). Conversely, the effect of mediating variables on the reduction of fat tissue percentage in rowers compared to the control group was not significant (P=0.61). Additionally, the mediating variables had no significant effect on the weight change
of these athletes (P=0.99). Furthermore, the study's findings indicated that HIIT exercises, in combination with mediating variables, could result in a significant increase in weight (P=0.05) and a significant decrease in the percentage of fat tissue in rowers compared to the control group (P=0.01).
Conclusion: Eight weeks of selected HIIT exercises, along with mediating variables such as carbohydrates, iron, and vitamin D, are effective in reducing fat tissue and improving the body composition of rowers.
کلیدواژهها [English]