健康个体生物阻抗身体成分参数的参考百分位数：一项横断面研究。
Reference percentiles for bioimpedance body composition parameters of healthy individuals: A cross-sectional study.
机构信息
Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Centro Universitário Ritter dos Reis (UniRitter), Porto Alegre, RS, Brazil.
Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Secretaria da Educação, Esporte e Lazer de Canela, Canela, RS, Brazil.
出版信息
Clinics (Sao Paulo). 2022 Sep 7;77:100078. doi: 10.1016/j.clinsp.2022.100078. eCollection 2022.
OBJECTIVES
The aim of this study was to estimate the percentage distribution of body composition parameters for healthy people at different ages from the assessment of electrical bioimpedance.
METHODS
A cross-sectional study of healthy Brazilian aged 5 years and older. Were evaluated: total body fat; percent body fat; fat-free mass; percent lean mass; fat mass index; and fat-free mass index.
RESULTS
Of 1240 participants, with a median age of 27.0 years, 52.5% were female, and 73.7% were Caucasian. Most of the body composition variables were associated with age. The fat-free mass increased from youth to adult and decreased in the elderly in both sexes, with higher values in males than in females. In males, the percentage of lean mass has higher values in adolescence compared to childhood, and in adults compared to the elderly, when analyzed from the 50 percentile. In women, fat-free mass compared to adulthood, values were higher in childhood and lower in older ages.
CONCLUSIONS
The study is the first to describe the Brazilian reference values for most clinical parameters of bioimpedance in percentiles stratified by different life cycles and sex. These findings can be very useful in clinical practice for health promotion and monitoring the nutritional status of the individual.
目的
本研究旨在通过评估人体生物电阻抗，估计不同年龄段健康人群的体成分参数的百分比分布。
方法
这是一项针对巴西 5 岁及以上健康人群的横断面研究。评估了以下指标：总体脂肪量；体脂百分比；去脂体重；瘦体重百分比；脂肪量指数；和去脂体重指数。
结果
在 1240 名参与者中，中位数年龄为 27.0 岁，52.5%为女性，73.7%为白种人。大多数体成分变量与年龄相关。无论性别，去脂体重在青年期到成年期增加，在老年期减少，男性的去脂体重高于女性。在男性中，与儿童期相比，青春期的瘦体重百分比更高，与老年期相比，成年期的瘦体重百分比更高，从 50%分位数分析。与成年期相比，女性的去脂体重在儿童期更高，在老年期更低。
结论
该研究首次描述了按不同生命周期和性别分层的生物电阻抗的大多数临床参数的巴西参考值。这些发现对于促进健康和监测个体的营养状况的临床实践非常有用。
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