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Comparison of Hypertrophic Effects of Low-Intensity Exercise on Rat Hindlimb Muscles between Every Other Day Exercise and Everyday Exercise  

Choe, Myoung-Ae (College of Nursing, Seoul National University)
Go, Jong-Jin (The Armed Forces Hampyeong Hospital)
Kwak, Hyun-Kyung (Seoul National University Hospital)
Baek, Ji-Hyun (Asan Medical Center)
Jung, Jin-Yung (Seoul National University Hospital)
Song, Yeon-Jeong (Seoul National University)
An, Gyeong-Ju (Department of Nursing, Cheongju University)
Publication Information
Journal of Korean Biological Nursing Science / v.13, no.1, 2011 , pp. 1-7 More about this Journal
Abstract
Purpose: The purpose of this study was to compare the hypertrophic effects of low-intensity exercise on weight, myofibrillar protein content and Type I, II fiber cross-sectional area of hindlimb muscles of rats between every other day exercise and every day exercise. Methods: Adult male Sprague-Dawley rats were assigned to 1 of 3 groups: control group (C, n=6), experimental group 1 (E1, n=7) and experimental group 2 (E2, n=7). Rats in E1 group had 7 sessions (every other day) and those in E2 group had 14 sessions (every day) of exercise in which they ran on a treadmill for 30 min/day at 10 m/min. Results: Muscle weight, cross-sectional area of type I fiber and myofibrillar protein content of soleus and myofibrillar protein content of plantaris in E1 group, and myofibrillar protein content of soleus and cross-sectional area of type I fiber of plantaris in E2 group were greater than those in C group. Cross-sectional area of type I fiber of soleus of E1 group was higher than E2 group while cross-sectional area of type I fiber of plantaris of E2 group was higher than E1 group. Conclusion: Hypertrophy of hindlimb muscles occurs from every other day exercise similar to every day exercise.
Keywords
Exercise; Muscular weight; Muscle fiber cross-sectional area; Myofibrillar protein;
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