Effects Of Weight Training On Bone Formation

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This article by Mehrzad Moghadasi and Sadri Siavashpour, published in the European Journal of Physiology, focuses on the effects that weight training has on bone formation. Their target study group were young and mostly inactive women. The purpose of this article was to study and analyze if weight training had any effect on the hormones that affect bone growth in women. These hormones include estrogen, testosterone, parathyroid hormone, and growth hormone. All these hormones affect bone growth and are secreted using a negative feedback control system that is affected by how active an individual is. It has always been said that physical activity can help in bone growth and another purpose of this study is to determine the validity of that…show more content…
The specific hormones that will be measured include estrogen, growth hormone, testosterone, parathyroid hormone, and IGF-I. The method of study involves 20 young females around 25 years old with regular health. These individuals have not had any active exercising in the last six months and also have no health conditions that would skewer the results. Participants were first familiarized with what machines were to be used and the proper form for each type of training. The study focused on eight major muscle groups including “chest press, leg extension, shoulder press, leg curls, latissimus pulldown, leg press, arm curls, and triceps extension. Resistance training consisted of 50–60 min of circuit weight training per day, 3 days a week, for 12 weeks. This training was circularly performed in eight stations and included two to four sets with 8–12 maximal repetitions at 65–80 % of 1-RM [one repetition maximum] in each station” (Moghadasi & Siavashpour, 2013, p. 26). There was a warm up before the exercises started and a small break between each station. The results showed no change in each subject’s body mass, body mass index, and waist to hip ratio. The significant change in body measurements between the control group and resistance training (RT) group was the percentage of body fat. There was a decrease in the group that was actively exercising throughout the study. At baseline, the two groups had similar
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