OBJECTIVE This study verified if the phase angle (PA) formed by the resistance (R) and reactance (Xc) obtained from bioimpedance (BIA) might be a useful tool to identify functionality. DESIGN AND PARTICIPANTS It was conducted a cross-sectional study with 152 women ≥ 65 years old from the community. MEASUREMENTS weight, height, body mass index (BMI), calf circumference (CC), hand grip strength (HGS), gait speed (GS), fat free mass (FFM), body fat (BF), PA with R and Xc from the BIA were measured. Spearman's and Pearson's correlations and the odds ratio (OR) were performed using the IBM SPSS software version 22.0. RESULTS Sixty-four percent (n=98) women are with PA below the reference. Negative moderate significant correlation was found between PA and age (r =- 0.440*; p<0.001). Moderate significant correlation was observed between PA and GS (r = 0.484**; p<0.001). Weak significant correlation was found between PA and HGS (r = 0.177*; p = 0.029). Odds ratio (OR) demonstrated that individuals with PA above the mean value have 4.77 times more chances of having increased GS (confidence interval 2.40-9.48; 95%). Women aged below the mean value have 4.02 times more chances of having higher PA (confidence interval 2.02-7.99; 95%). Younger aged women showed 4.02 times more chances of having higher PA (confidence interval 2.02-7.99; 95%). CONCLUSIONS Phase angle can be associated with functional tests, such as gait speed and hand grip strength, in older women.

中文翻譯：

相位角反映了老年女性功能的喪失。

目的 本研究驗證從生物阻抗 (BIA) 獲得的電阻 (R) 和電抗 (Xc) 形成的相角 (PA) 是否可能是識別功能的有用工具。設(shè)計和參與者 這是一項針對社區(qū) 152 名 65 歲以上女性的橫斷面研究。測量體重、身高、體重指數(shù) (BMI)、小腿圍 (CC)、握力 (HGS)、步態(tài)速度 (GS)、去脂質(zhì)量 (FFM)、體脂 (BF)、PA，其中 R 和 Xc 來自測量了 BIA。 Spearman 和 Pearson 相關(guān)性和優(yōu)勢比 (OR) 使用 IBM SPSS 軟件 22.0 版進(jìn)行。結(jié)果 64% (n=98) 的女性 PA 低于參考值。 PA 與年齡之間存在負(fù)中度顯著相關(guān)性 (r =- 0.440*; p<0.001)。 PA 和 GS 之間觀察到中度顯著相關(guān)性 (r = 0.484**；p<0.001)。 PA 和 HGS 之間存在微弱的顯著相關(guān)性（r = 0.177*；p = 0.029）。比值比 (OR) 表明，PA 高于平均值的個體 GS 增加的機(jī)會增加 4.77 倍（置信區(qū)間 2.40-9.48；95%）。年齡低于平均值的女性擁有較高 PA 的機(jī)會是其 4.02 倍（置信區(qū)間 2.02-7.99；95%）。年輕女性獲得較高 PA 的機(jī)會是其他女性的 4.02 倍（置信區(qū)間 2.02-7.99；95%）。結(jié)論 相位角可能與老年女性的功能測試相關(guān)，例如步態(tài)速度和握力。

相關(guān)知識

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Ministry of Health and Welfare, Health Service Bureau, Community Health, Health Promotion and Nutrition Division (1999) Overview of the Results of a Questionnaire on the Actual Situation of Smoking and Health Problems in FY1998.

網(wǎng)址: Phase Angle Reflects Loss of Functionality in Older Women.,The Journal of Nutrition, Health & Aging http://www.gysdgmq.cn/newsview1636116.html