Jump Exercise and Food Restriction on Bone Parameters in Young Female Rats
Jump Exercise and Food Restriction on Bone Parameters in Young Female Rats
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DOI：
10.1007/s00223-019-00601-5
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发表时间：
2019-11-01
影响因子：
4.2
通讯作者：
Ohtsuki, Makoto
中科院分区：
文献类型：
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作者：
Aikawa, Yuki;Wakasugi, Yusuke;Ohtsuki, Makoto
我们研究了在食物限制下跳跃运动对年轻雌性大鼠骨参数的影响。将7周龄雌性大鼠分为4组：安静和自由进食组（n=10）、跳跃运动和自由进食组（n=9）、安静和30%食物限制组（n=9）和跳跃运动和30%食物限制组（n=10）。跳跃组每天跳跃20次，每周5次。实验持续了13周。跳跃运动与限食对骨骼的影响无交互作用。限食条件下的跳跃运动诱导了年轻雌性大鼠更高的骨强度、骨矿物质含量、骨面积、骨密度（BMD）和皮质骨体积，与自由进食条件下的大鼠相似。自由进食和限食加跳跃运动训练组的骨强度参数无显著差异;然而，限食组的BMD、骨大小和骨量未达到自由进食加跳跃运动训练组的水平。跳跃运动和食物限制对血清雌二醇或IGF-1均无显著影响。我们的研究表明，跳跃运动减轻了年轻雌性大鼠的生物力学性能和某些骨部位的食物限制的损失。
We examined the effect of jump exercise on bone parameters in young female rats under food restriction. Seven-week-old female rats were divided into four groups: a sedentary and ad libitum feeding group (n=10), a jump exercise and ad libitum feeding group (n=9), a sedentary and 30% food restriction group (n=9), and a jump exercise and 30% food restriction group (n=10). The jump groups jumped 20 times/day, 5 times/week. The experiment lasted for 13 weeks. There were no interactions of jump exercise and food restriction on bone. Jump exercise under food restriction conditions induced higher bone strength, bone mineral content, bone area, bone mineral density (BMD), and cortical bone volume in young female rats, similar to rats under ad libitum feeding conditions. Bone strength parameters were not significantly different between ad libitum intake and food restriction with jump exercise training; however, BMD, bone size, and bone mass in the food restriction groups did not reach the levels of those in the ad libitum conditions group with jump exercise training. Neither jump exercise nor food restriction had a significant effect on serum estradiol or IGF-1. Our study reveals jump exercise attenuates loss of biomechanical properties and some bone sites with food restriction in young female rats.