Exercise Physiology Laboratory, Postgraduate Program in Physical Activity Sciences, Universidade Salgado de Oliveira, Niterói 24030-060, Brazil.
Health and Aging Research Group, Universidade Iguaçu, Nova Iguaçu 26275-580, Brazil.
Int J Environ Res Public Health. 2024 Jul 29;21(8):993. doi: 10.3390/ijerph21080993.
Variables such as body mass index (BMI), waist circumference (WC), and waist/height ratio (WHtR) are used to assess cardiovascular risks associated with abdominal obesity. The Timed Up and Go (TTUG) test assesses mobility and the risk of falls, especially in the elderly and individuals with physical limitations. The objective was to correlate anthropometric indicators of cardiovascular risk (BMI, WC, WHtR) with performance on the TTUG test in elderly people who practice physical activity.
Observational, cross-sectional study, CAAE: 27116319.1.0000.8044. Active elderly participants in a public physical exercise program "Project 60 Up", promoted by the Municipal Secretariat for the Elderly of the City of Niterói, RJ, Brazil, were evaluated. Elderly people of both sexes, with independent locomotion and preserved cognitive status, were included and those with visual, hearing, severe mobility difficulties or neurological sequelae and imbalances were excluded. Anthropometric data were collected: BMI, WC, WHtR, and the TTUG test was performed.
In the sample composed of 55 elderly people of both sexes, with an average age of 68 years, the means of the variables were: body weight (67.8 ± 12.7 kg), height (157.2 ± 8.4 cm), TTUG (10.3 ± 2 s), WC (93.3 ± 10.9 cm), WHtR (0.59), and BMI (27.4 ± 4.4). The correlations were between TTUG and age (r = -0.24, = 0.69), TTUG and BMI (r = 0.111, = 0.426), and WC and WHtR (r = 0.885, < 0.000). Weak correlations were observed between TTUG and BMI and WC and WHtR, indicating that factors other than BMI and abdominal fat accumulation may have a greater influence on performance on the TTUG test. In this specific context of elderly people participating in a physical activity program, the results found may have been shaped by the very nature of the interventions carried out in the program, with factors such as muscular strength, flexibility and balance preserved and acquired through the practice of regular physical exercise. Despite the benefits of physical activity, managing weight and abdominal fat remains challenging for elderly individuals with high anthropometric measurements.
Although many elderly people have anthropometric measurements above average levels, the results indicate that no negative influence on their performance on the TTUG was observed. However, the limitation of the sample size and the underrepresentation of elderly people ≥ 80 years and of men highlight the need for future studies with larger and more balanced samples to confirm these results.
本研究旨在分析和比较慢性阻塞性肺疾病(COPD)患者与健康对照者的膈肌功能和膈肌脂肪浸润程度,探讨其与呼吸困难和运动能力的关系。
我们纳入了 41 名 COPD 患者和 33 名健康对照者。使用超声心动图测量膈肌厚度和厚度变化,并计算膈肌脂肪分数(DF)。使用六分钟步行试验(6MWT)评估运动能力,使用改良英国医学研究委员会呼吸困难量表(mMRC)评估呼吸困难程度。
COPD 患者的膈肌厚度和厚度变化均显著低于健康对照组(P<0.001),而 DF 显著高于健康对照组(P<0.001)。COPD 患者的 6MWT 距离和最大摄氧量(VO2max)显著低于健康对照组(P<0.001),而 mMRC 评分显著高于健康对照组(P<0.001)。在 COPD 患者中,膈肌厚度和厚度变化与 6MWT 距离和 VO2max 呈正相关(r=0.43 和 0.45,均 P<0.001),与 mMRC 评分呈负相关(r=-0.54 和 -0.52,均 P<0.001)。DF 与 6MWT 距离和 VO2max 呈负相关(r=-0.40 和 -0.37,均 P<0.001),与 mMRC 评分呈正相关(r=0.45 和 0.42,均 P<0.001)。多元线性回归分析显示,膈肌厚度和厚度变化是 6MWT 距离和 VO2max 的独立预测因素,而 DF 是 mMRC 评分的独立预测因素。
COPD 患者存在膈肌功能障碍和膈肌脂肪浸润,与呼吸困难和运动能力下降有关。膈肌功能和 DF 可能是评估 COPD 患者呼吸困难和运动能力的有用指标。