Effects of low-energy diet and exercise on body composition and bone mineral metabolism

低能量饮食和运动对身体成分和骨矿物质代谢的影响

• 批准号: 04454583
• 负责人: OKUDA Toyoko
• 金额: $ 1.79万
• 依托单位: OSAKA CITY UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04454583/
• 关键词: Body composition; Fat-free mass; Body fat; Bone mineral density; Low-energy diet; Low-protein diet; Vegan; Ca balance; 低タンパク質; エネルギー制限; 骨強度; 骨重量; 骨中ミネラル; 自発運動

The purpose of this study was to examine the effects of a low-energy, low-protein vegan diet for 6 months on bone mineral density (BMD), measured by dual-energy X-ray absorptiometry in middle-aged volunteers (three men and four women). The base-line BMD of the lumbar spine (L2-L4) was in the normal range for the subjects' age and sex except for two subjects, in whom it was low. After 6 month, the mean L2-L4 BMD and bone mineral content (BMC) had not decreased significantly. However, the L2-L4 BMC in one man, aged 30 years, had decreased by 9.0% of the base-line value. The total body BMC in two postmenopausal women had decreased by 14.2% and 13.8% of the base-line values after 6 months, but the mean total body BMC for the entire group did not decrease significantly during the 6 month on the vegan diet.The purpose of this study was to examine the short-term effects of a low-energy, low-protein, vegan diet on the body composition of 31 middle-aged volunteers. The vegan diet contained 140g … More of brown rice, 500g o five varieties of leafy green vegetables, 500g of three kinds of roots, 80g of fruit, and 10g of salt daily. Before the start of the study, ten women were already on this vegan diet ("continuous" group) and 21 women were trying this diet for the first time or had tried this diet earlier once or several times ("non continuous" group). Body fat was measured by bioelectrical impedance. After 6 weeks, the "non continuous" group had greater weight loss (4.0 (〕SY.+-.〔) 0.4kg) than the "continuous" group (1.3 (〕SY.+-.〔) 0.5kg). Weight loss was 80.3 (〕SY.+-.〔) 8.5% from fat mass in the "non continuous" group. Body weight loss during 6 weeks was significantly associated with initial body weight, initial body fat mass, and the extent of decrease in the daily protein intake. The "non continuous" group used energy from body weight loss (698 (〕SY.+-.〔) 90kcal/day) for basal metabolism and physical activity. There was no excess loss of fat-free mass on this low-energy, low-protein, vegan diet for 6 weeks. Less

本研究的目的是检查低能量，低蛋白质纯素饮食6个月对骨矿物质密度（BMD）的影响，通过双能X射线吸收测量法测量中年志愿者（3名男性和4名女性）。腰椎（L2-L4）的基线BMD在受试者年龄和性别的正常范围内，但有两名受试者的基线BMD较低。6个月后，L2-L4平均BMD和骨矿物质含量（BMC）没有显著下降。然而，一名30岁男性的L2-L4 BMC下降了基线值的9.0%。两名绝经后妇女的全身BMC在6个月后分别下降了基线值的14.2%和13.8%，但整个组的平均全身BMC在6个月的纯素dietes.The目的没有显着下降，本研究的目的是检查短期的影响，低能量，低蛋白，纯素饮食对身体组成的31名中年志愿者。纯素饮食含有140克 ...更多信息 糙米500克，五种叶绿色蔬菜500克，三种根茎500克，水果80克，食盐10克。在研究开始之前，10名女性已经在这种纯素饮食中（“连续”组），21名女性第一次尝试这种饮食，或者之前尝试过一次或几次（“非连续”组）。用生物电阻抗法测量体脂。6周后，“非连续”组的体重减轻更大（4.0（）SY. ±.（）0.4kg）比“连续”组（1.3（）SY. ±.（）0.5kg）。体重减轻80.3 ± 0.05。（）“非连续性”组中8.5%来自脂肪量。6周内的体重减轻与初始体重、初始体脂量和每日蛋白质摄入量减少的程度显著相关。“非连续”组使用来自体重减轻的能量（698（）SY. ±.（）90千卡/天）的基础代谢和体力活动。在这种低能量、低蛋白、纯素饮食中，6周内无脂肪质量没有过度损失。少