Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia.
J Int Soc Sports Nutr. 2013 Sep 25;10(1):43. doi: 10.1186/1550-2783-10-43.
Osteoporotic fractures are a significant cause of morbidity and mortality, particularly in developed countries. Increasing peak bone mass in young people may be the most important primary prevention strategy to reduce the risk of osteoporosis. This study aimed to examine the relationship between dietary factors and physical activity on bone mineralization in young men.
Thirty-five healthy men aged 18-25 y had anthropometric measures, body composition, resting metabolic rate, blood pressure, blood lipids, food intake, physical activity and cardiorespiratory fitness assessed.
Participants who consumed more than 1000 mg/d of calcium were taller and had higher levels of whole body mineral content than participants who consumed less than 1000 mg/d of calcium. Similarly, participants who expended more than 20% of total daily energy engaged in moderate- to vigorous-intensity physical activity had higher cardiorespiratory fitness and higher levels of body mass adjusted bone mineral content than participants who did not meet this level of energy expenditure. There were no differences in blood pressure or blood lipids between participants in calcium or in physical activity energy expenditure categories.
A high intake of dietary calcium and high daily energy expenditure engaged in moderate- to vigorous-intensity physical activity were positively associated with bone mineralization in young men, particularly in the lumbar region.
骨质疏松性骨折是发病率和死亡率的一个重要原因，特别是在发达国家。增加年轻人的峰值骨量可能是减少骨质疏松风险的最重要的初级预防策略。本研究旨在探讨饮食因素和体力活动对年轻男性骨矿化的关系。
35 名年龄在 18-25 岁的健康男性进行了人体测量、身体成分、静息代谢率、血压、血脂、饮食摄入、体力活动和心肺功能评估。
每天摄入超过 1000 毫克钙的参与者比每天摄入少于 1000 毫克钙的参与者更高，全身矿物质含量也更高。同样，每天消耗超过 20%总能量的参与者从事中等到剧烈强度的体力活动，其心肺功能更好，身体质量调整后的骨矿物质含量也更高，而那些没有达到这一能量消耗水平的参与者则没有。钙或体力活动能量消耗类别的参与者之间的血压或血脂没有差异。
高钙饮食摄入和高日常能量消耗，从事中等到剧烈强度的体力活动，与年轻男性的骨矿化呈正相关，特别是在腰椎区域。
