Programa de Pós-graduação em Pediatria e Saúde da Criança, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil; Prefeitura Municipal de Canela/RS-Projeto Esporte e Saúde em Canela (PESC), Brazil.
Programa de Pós-graduação em Medicina e Ciências da Saúde da Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil; Centro Universitário Ritter dos Reis - UniRitter, Porto Alegre, Brazil.
Clin Nutr. 2019 Aug;38(4):1504-1510. doi: 10.1016/j.clnu.2018.08.031. Epub 2018 Sep 4.
To evaluate the relationship between physical activity and phase angle.
Systematic Review and Meta-analysis.
Electronic searches of MEDLINE (via PUBMED), EMBASE, Cochrane Central Register of Controlled Trials (CENTRAL, The Cochrane Library), SciELO, LILACS, SPORTDiscus, Scopus, and Web of Science from inception to December 10th, 2017.
The PICOS strategy was defined, in which "P" corresponded to participants of any age, sex or ethnicity, "I" indicated any type of physical activity program, "C" denoted lack of exercise or irregular physical activity, "O" corresponded to the phase angle obtained by bio-impedance, and "S" indicated longitudinal or cross-sectional studies.
In cross-sectional studies the phase angle was higher among the active individuals (MD = 0.70; 95% CI: 0.48, 0.92, P < 0.001), with low heterogeneity (I = 0%; P = 0.619). In longitudinal studies, the mean of the difference of phase angles from the baseline was significantly higher for the active group than the control group (MD = 0.30; 95% CI: 0.11, 0.49, P = 0.001), with low heterogeneity (I = 13%, P = 0.331). No evidence of publication bias was found and the overall risk of bias was moderate to high.
SUMMARY/CONCLUSION: The positive association of physical activity with phase angle reinforces the importance of routinely including exercise in health care. We also identified the need for further studies to define with different types, intensities and frequencies of exercises should be conducted in order to find the best dose-effect relationship.
评估体力活动与相位角之间的关系。
系统评价和荟萃分析。
电子检索 MEDLINE（通过 PUBMED）、EMBASE、Cochrane 对照试验中心注册库（CENTRAL，The Cochrane Library）、SciELO、LILACS、SPORTDiscus、Scopus 和 Web of Science，检索时间截至 2017 年 12 月 10 日。
定义了 PICOS 策略，其中“P”对应于任何年龄、性别或种族的参与者，“I”表示任何类型的体力活动计划，“C”表示缺乏运动或不规则的体力活动，“O”对应于生物阻抗测量得到的相位角，“S”表示纵向或横断面研究。
在横断面研究中，活跃个体的相位角较高（MD=0.70；95%CI：0.48，0.92，P<0.001），异质性低（I=0%；P=0.619）。在纵向研究中，活跃组与对照组相比，相位角从基线的差异平均值显著较高（MD=0.30；95%CI：0.11，0.49，P=0.001），异质性低（I=13%，P=0.331）。未发现发表偏倚的证据，总体偏倚风险为中度至高度。
总结/结论：体力活动与相位角之间的正相关关系强化了在医疗保健中常规包括运动的重要性。我们还发现需要进一步研究，以确定不同类型、强度和频率的运动应该进行，以便找到最佳的剂量-效应关系。
