Phase angle predicts physical function in older adults

Matias, Catarina N.; Nunes, Catarina L; Francisco, Samuel; Tomeleri, Crisieli M.; Cyrino, Edílson Serpeloni; Sardinha, Luís B.; Silva, Analiza M.

doi:10.1016/j.archger.2020.104151

Cited by 41 publications

(47 citation statements)

References 38 publications

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“…Cunha et al [22] observed an increased phase angle (5.87-6.12° and 5.50-5.90°, respectively, p<0.05) and improved muscle mass quality, following 12-week resistance training in elderly women who underwent resistance training compared with elderly women who did not receive this training. https://doi.org/10.1590/1678-9865202235200243 Although we did not observe an association between the phase angle and muscle strength and physical performance in our study, other studies have reported a correlation between the phase angle and these aforementioned parameters of sarcopenia [5,9,16,[23][24][25][26].…”

Section: Discussioncontrasting

confidence: 96%

Phase angle as a screening method for sarcopenia in community-dwelling older adults

et al. 2022

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Objective We investigated the utility of the phase angle as a screening tool for sarcopenia. Methods We performed a cross-sectional study that included 169 active community-dwelling elderly women. The phase angle was determined using tetrapolar bioelectrical impedance, and sarcopenia was diagnosed based on skeletal muscle mass, muscle strength, and physical performance using bioelectrical impedance analysis, a handheld dynamometer, and the gait speed test, respectively. Receiver operating characteristic curve analysis was performed to investigate the role of the phase angle as a predictor of sarcopenia. Results The prevalence of sarcopenia was 12.4%. The median phase angle was 5.30°; elderly women with sarcopenia had lower phase angles than those without sarcopenia (p=0.006). The phase angle cutoff for the detection of sarcopenia was ?5.15°, with an area under the curve of 0.685, sensitivity 81.0%, specificity 60.8%, and accuracy 63.31%. Elderly women with a low phase angle show a high risk of presenting with reduced muscle mass. Conclusions The phase angle was shown to be a useful screening tool in elderly women with sarcopenia.

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Section: Discussioncontrasting

confidence: 96%

Phase angle as a screening method for sarcopenia in community-dwelling older adults

et al. 2022

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“…The differences observed may reflect variations in muscle strength and in the quantity of the muscle mass of the different participants [ 62 ], but it may also reflect differences in methodological level with the use of different devices to assess PhA [ 70 ]. Actually, in a study of healthy individuals from the same country, which may eventually correspond to identical aging in terms of lifestyle, Matias et al found similar values of 5.29° ± 0.54° in 92 female participants [ 71 ].…”

Section: Discussionmentioning

confidence: 99%

Comparisons between Bioelectrical Impedance Variables, Functional Tests and Blood Markers Based on BMI in Older Women and Their Association with Phase Angle

Oliveira

Leão

Silva

et al. 2022

IJERPH

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The aim of the present study was to compare electrical bioimpedance variables, blood markers and functional tests based on Body Mass Index (BMI) in older women. Associations between Phase Angle (PhA) with functional tests and blood markers were also analyzed. A total of 46 independent elderly people participated in the study, and they were divided into four groups according to BMI values: Group 1 (G1, BMI < 25 kg/m2); Group 2 (G2, BMI > 25–30 kg/m2); Group 3 (G3, BMI > 30–35 kg/m2); Group 4 (G4, BMI > 35 kg/m2). In addition to the weight and height used to calculate the BMI, the following body composition variables were collected: fat mass (FM), fat-free mass, intracellular water (ICW), extracellular water (ECW), total body water (TBW) and PhA (50 kHz) through InBody S10 equipment. Functional capacity was assessed using the Fullerton battery of tests: arm-curl; chair-stand; 6 min walking test (6MWT); time up-and-go test (TUG); standing on one leg (SOOL) and take 10 foot-lines (10FL). The main results showed differences between groups in the tests: 6MWT, SOOL and 10FL between G1 vs. G3 and G2 vs. G3 (p < 0.05); ACT, AIC and AEC between G1 vs. G4 (p < 0.05); FM among all groups (p < 0.05). Negative correlations were found between PhA and the agility test in G1 (r = −0.848; p = 0.008) and G4 (r = −0.909; p = 0.005); PhA and chair-stand in G3 (r = 0.527; p = 0.044); PhA and forearm flexion in G3 (r = 0.641; p = 0.010) and G4 (r = 0.943; p = 0.001); PhA and 6MWT in G4 (r = 0.771; p = 0.042). This study found that there is a clear trend towards better functional capacities with better parameters of body composition. Although there were no differences between groups in PhA, associations were found between different functional tests with PhA, which reveals the importance of this variable as a marker of health status.

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“…It is reported that PhA was associated with muscle strength [44] and quadriceps strength [40]. Therefore, there is a possibility that PhA might be a useful predictor for screening physical function [45]. In this study, preoperative PhA correlated with postoperative HU of both the gluteus maximus and quadriceps, and muscle volume of the quadriceps.…”

Section: Discussionmentioning

confidence: 54%

Correlation between preoperative body composition and postoperative muscle volume and degeneration after total hip arthroplasty

Ukai

Yokoyama

Watanabe

2022

Preprint

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Background: Impaired muscle recovery after total hip arthroplasty (THA) may greatly affect gait and activities of daily living. Bioelectrical impedance analysis (BIA) may be used to assess body composition and muscle volume and computed tomography (CT) may be used for assessing muscle volume and, using Hounsfield units, fatty degeneration of muscle. This study aimed to assess the correlation between preoperative body composition and postoperative muscle volume and degeneration after THA using BIA and CT. Methods: Thirty-seven patients who underwent THA and had BIA and CT performed both pre- and postoperatively were retrospectively assessed. Body composition measurements, specifically the fat mass index, fat-free mass index, and phase angle, were recorded using BIA. Pre- and postoperative muscle volume and Hounsfield units of the gluteus maximus and quadriceps of the affected hip were measured using CT. The correlation between preoperative body composition measurements and postoperative muscle volume and Hounsfield units of the gluteus maximus and quadriceps was evaluated. Results: Preoperative fat mass index negatively correlated with postoperative muscle volume of the gluteus maximus (P=0.02) and quadriceps (P<0.001) and the Hounsfield units of the gluteus maximus (P=0.03) and quadriceps (P=0.03). Preoperative fat-free mass index positively correlated with postoperative muscle volume of the quadriceps (P=0.02). Preoperative phase angle positively correlated with postoperative muscle volume of the quadriceps (P=0.001) and the Hounsfield units of the gluteus maximus (P=0.03) and quadriceps (P=0.001). Conclusion: In patients who underwent THA, preoperative body composition correlated with postoperative muscle volume and fatty degeneration of the affected lower limb. Preoperative body composition may be useful for predicting postoperative muscle volume and fatty degeneration and thus the extent of postoperative recovery.

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Phase angle predicts physical function in older adults

Cited by 41 publications

References 38 publications

Phase angle as a screening method for sarcopenia in community-dwelling older adults

Phase angle as a screening method for sarcopenia in community-dwelling older adults

Comparisons between Bioelectrical Impedance Variables, Functional Tests and Blood Markers Based on BMI in Older Women and Their Association with Phase Angle

Correlation between preoperative body composition and postoperative muscle volume and degeneration after total hip arthroplasty

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