Acute bout of resistance exercise increases vitamin D receptor protein expression in rat skeletal muscle

Experimental Physiology
Yuhei MakanaeSatoshi Fujita

Abstract

What is the central question of this study? Does an acute bout of exercise alter vitamin D receptor expression in rat skeletal muscle? What is the main finding and its importance? Resistance exercise but not endurance exercise increased intramuscular vitamin D receptor expression. Thus, resistance exercise may be an effective way to increase muscle vitamin D receptor expression. Vitamin D and vitamin D receptor (VDR) are involved in the maintenance of skeletal muscle mass and function. Although resistance exercise is well known to enhance muscle growth and improve muscle function, the effect of resistance exercise on VDR has been unclear. We investigated intramuscular VDR expression in response to an acute bout of resistance exercise or endurance exercise. Male adult Sprague-Dawley rats were subjected to either resistance exercise (isometrically exercised via percutaneous electrical stimulation for five sets of ten 3 s contractions, with a 7 s interval between contractions and 3 min rest intervals between sets) or endurance exercise (treadmill at 25 m min(-1) for 60 min). Rats were killed immediately or 1, 3, 6 or 24 h after completion of the resistance or endurance exercise, and gastrocnemius muscles were removed. Non-exercise...Continue Reading

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Citations

Mar 1, 2017·Cold Spring Harbor Perspectives in Medicine·Barbara KuprChristoph Handschin
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