Barbão Kleber E G, Pavanello Audrei, Oliveira Fabiano M, Santos Natalia Q, Valdés-Badilla Pablo, Marchiori Luciana L M, Franchini Emerson, Branco Braulio H M
Graduate Program of Health Promotion, Cesumar University, Maringá 87050-390, Brazil.
Clinisport Prime, Integrated Rehabilitation and Performance Center, Maringá 87060-350, Brazil.
Nutrients. 2025 Apr 24;17(9):1435. doi: 10.3390/nu17091435.
Utilizing a significative sample, this study aimed to analyze body composition components in different age groups and to develop age-specific normative tables for individuals in southern Brazil. This observational, descriptive, and cross-sectional study evaluated 8556 individuals of both sexes (54% females) aged 18-49. The hypotheses of the present study are related to declining fat-free mass (FFM), lean mass (LM), and skeletal muscle mass (SMM) and increasing fat mass (FM) and body fat percentage (BFP) during the aging process. Data were collected through bioelectrical impedance analysis (BIA) and stratified by age (18-29, 30-39, and 40-49 years), sex, and body mass index (BMI) classifications (normal weight, overweight, grade I, and grade II obesity). Following the comparison, body composition components were presented in the 3rd, 10th, 25th, 50th, 75th, 90th, and 97th percentiles. This study's main findings indicated that FM and BFP increased with age in both sexes. Among overweight and obese individuals, elevated BFP was particularly high in obese females aged 40-49 years and in normal and overweight males. FFM, LM, and SMM were generally lower in the 40-49-year-old group, although obese females over 40 presented higher FFM and LM values. In contrast, males presented lower FFM and LM values but higher values among individuals with higher BMI. SMM was lower in overweight individuals over 40, likely reflecting muscle mass loss associated with aging. Based on these results, lifestyle interventions that combine nutrition and physical exercise may be recommended to mitigate these effects of aging.
本研究采用具有代表性的样本，旨在分析不同年龄组的身体成分，并为巴西南部的个体制定特定年龄的标准表格。这项观察性、描述性横断面研究评估了8556名年龄在18至49岁之间的男女（女性占54%）。本研究的假设与衰老过程中去脂体重（FFM）、瘦体重（LM）和骨骼肌质量（SMM）下降以及脂肪量（FM）和体脂百分比（BFP）增加有关。数据通过生物电阻抗分析（BIA）收集，并按年龄（18至29岁、30至39岁和40至49岁）、性别和体重指数（BMI）分类（正常体重、超重、I级和II级肥胖）进行分层。比较之后，身体成分以第3、10、25、50、75、90和97百分位数呈现。本研究的主要发现表明，男女的FM和BFP均随年龄增长而增加。在超重和肥胖个体中，40至49岁的肥胖女性以及正常和超重男性的BFP升高尤为明显。40至49岁组的FFM、LM和SMM通常较低，不过40岁以上的肥胖女性的FFM和LM值较高。相比之下，男性的FFM和LM值较低，但在BMI较高的个体中数值较高。40岁以上超重个体的SMM较低，这可能反映了与衰老相关的肌肉量流失。基于这些结果，可能建议采取结合营养和体育锻炼的生活方式干预措施来减轻衰老的这些影响。
