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KMID : 0869120110130010001
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기초간호자연과학회지
2011 Volume.13 No. 1 p.1 ~ p.7
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Comparison of Hypertrophic Effects of Low-Intensity Exercise on Rat Hindlimb Muscles between very Other Day Exercise and Everyday Exercise
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Choe Myoung-Ae
Go Jong-Jin
Kwak Hyun-Kyung
Baek Ji-Hyun
Jung Jin-Young
Song Yeon-Jung
An Gyeong-Ju
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Abstract
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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.
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KEYWORD
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Exercise, Muscular weight, Muscle fiber cross-sectional area, Myofibrillar protein
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