Does resistance exercise facilitate iron and calcium recycle in the body to reduce their requirement?

2014 Fiscal Year Final Research Report

• Project/Area Number: 24650413
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Sports science
• Research Institution: Osaka University of Health and Sport Sciences
• Principal Investigator: OKAMURA Koji 大阪体育大学, 体育学部, 教授 (10330151)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 鉄 / カルシウム / 運動 / 吸収 / 再利用 / ヘプシジン / 貧血 / 骨

Outline of Final Research Achievements

This study investigated hypothesis whether resistance exercise training facilitates recycling of iron and calcium in the body and the requirement of these nutrients could be less than thought in athletes whose requirements of these nutrients are regarded high. The results showed that resistance exercise training decreases iron absorption, whereas the iron status maintained due to facilitating iron recycle in the body, suggesting that athletes engaging resistance exercise training might not necessarily increase iron intake. Since bone calcium content, rupture strength and stiffness showed no effect of resistance exercise training, the exercise do not appear to facilitate calcium recycling in the body.

Free Research Field

運動栄養学