نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه فیزیولوژی ورزش، دانشکده علوم ورزشی، دانشگاه تربیت دبیر شهید رجایی، تهران، ایران
2 گروه فیزیولوژی ورزش، دانشکده علوم ورزشی، دانشگاه شهید رجایی، تهران، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Abstract
Objective: Aging leads to a reduction in muscle fibers, the number of stem cells, and their regenerative potential. Resistance training is employed as a strategy to mitigate the decline in muscle strength and function. This study aimed to investigate the effect of six weeks of TRX training on PAX7 protein levels and functional performance indices of upper and lower body strength, flexibility, agility, and cardiorespiratory endurance in elderly women.
Materials and Methods: This applied research utilized a pre-test/post-test design. Thirty-two elderly women with a mean age of 62.5 ± 5.16 years, mean height of 162.60 ± 4.68 cm, mean weight of 73.92 ± 9.29 kg, and a body mass index of 27.97 ± 3.38 were randomly assigned to either a training group (n = 16) or a control group (n = 16). The training protocol consisted of six weeks of TRX exercises, with two sessions per week. Eight exercises, including various rows, assisted squats, biceps curls, chest presses, shoulder presses, squats, triceps extensions, and a squat-biceps curl-row combination, were performed for 50 minutes per session. Six Fullerton functional fitness tests were administered as dependent variables in both the pre-test and post-test. Blood samples were collected 48 hours before the first session and after the last session. PAX7 protein levels were measured using the ELISA method. Following confirmation of data normality using the Shapiro-Wilk test and homogeneity of variance using Levene's test, a one-way analysis of covariance (ANCOVA) was conducted using SPSS 26 to test the hypotheses.
Results: Six weeks of TRX resistance training significantly increased PAX7 protein levels in the training group compared to the control group (P = 0.001). Furthermore, the training program significantly improved upper body strength (P = 0.011), upper body flexibility (P = 0.001), lower body flexibility (P = 0.001), agility (P = 0.018), and cardiorespiratory endurance (P = 0.008) in the elderly women. However, six weeks of TRX resistance training did not significantly affect lower body strength (P = 0.479).
Conclusion: Six weeks of TRX training resulted in a significant increase in serum PAX7 protein levels in elderly women and improved functional performance indices of upper body strength, upper and lower body flexibility, and cardiorespiratory endurance. Based on these findings, TRX training can be utilized to enhance functional fitness in elderly individuals. However, given the lack of significant impact on lower body strength and its critical role in preventing falls and improving quality of life, it is recommended to implement a modified protocol with more targeted lower body exercises to enhance lower limb strength, functional capacity, and postural control in elderly populations.
Keywords: TRX Training, PAX7 Protein, Upper and Lower Body Functional Performance Indices, Elderly Women.
کلیدواژه‌ها [English]
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