Research Center in Kinanthropometry and Human Performance, Sports Center, Federal University of Santa Catarina, Florianópolis, Brazil.
Exercise and Health Laboratory, CIPER, Faculdade Motricidade Humana, Universidade Lisboa, Cruz-Quebrada, Portugal.
Nutrition. 2022 Jan;93:111489. doi: 10.1016/j.nut.2021.111489. Epub 2021 Sep 12.
The aim of this study was to summarize the evidence on the association of phase angle (PhA) with muscle strength and aerobic fitness in different populations.
A systematic search on this topic was performed in nine electronic databases (CINAHL, LILACS, PubMed, SciELO, Scopus, SPORTDiscus, ScienceDirect, MEDLINE, and Web of Science) in January 2021. Studies with different designs that permitted extraction of information about the relationships between PhA and muscle strength and between PhA and aerobic fitness were included. A total of 4446 studies were initially identified; 34 were included after reading of the title, abstract, full text, and references. Four of the studies included had a longitudinal design, with samples consisting of participants ages 6 to 92 years. Thirty-two of the 34 studies evaluated the relationship between PhA and muscle strength, two cross-sectional studies investigated only PhA and aerobic fitness, and three cross-sectional studies evaluated both components (muscle strength and aerobic fitness).
PhA was directly associated with muscle strength in 30 cross-sectional studies and two longitudinal studies; the two studies that did not find a direct relationship had a cross-sectional design. For aerobic fitness, the five studies identified reported a direct relationship with PhA.
PhA is directly associated with muscle strength and aerobic fitness in different age groups (children, adolescents, adults, and older adults) and in people with different health conditions (human immunodeficiency virus, Crohn's disease, chronic obstructive pulmonary disease, bariatric surgery, kidney transplant, cancer, hemodialysis, and sarcopenia).
本研究旨在总结相位角（PhA）与不同人群肌肉力量和有氧健身之间关联的证据。
2021 年 1 月，我们在九个电子数据库（CINAHL、LILACS、PubMed、SciELO、Scopus、SPORTDiscus、ScienceDirect、MEDLINE 和 Web of Science）中对该主题进行了系统检索。纳入了不同设计的研究，这些研究允许提取有关 PhA 与肌肉力量之间以及 PhA 与有氧健身之间关系的信息。最初确定了 4446 项研究；在阅读标题、摘要、全文和参考文献后，纳入了 34 项研究。其中 4 项研究具有纵向设计，样本由年龄在 6 至 92 岁的参与者组成。34 项研究中的 32 项评估了 PhA 与肌肉力量之间的关系，两项横断面研究仅调查了 PhA 与有氧健身之间的关系，三项横断面研究评估了这两个组成部分（肌肉力量和有氧健身）。
30 项横断面研究和两项纵向研究表明 PhA 与肌肉力量直接相关；两项未发现直接关系的研究为横断面设计。对于有氧健身，确定的五项研究报告了 PhA 与有氧健身之间的直接关系。
在不同年龄组（儿童、青少年、成年人和老年人）和不同健康状况（人类免疫缺陷病毒、克罗恩病、慢性阻塞性肺疾病、减肥手术、肾移植、癌症、血液透析和肌肉减少症）人群中，PhA 与肌肉力量和有氧健身直接相关。
