Phase Angle Reflects Loss of Functionality in Older Women

Bittencourt, D; Schieferdecker, Maria Eliana Madalozzo; Macedo, D. S.; Biesek, Simone; Gomes, Anna Raquel Silveira; Rabito, Estela Iraci

doi:10.1007/s12603-020-1324-5

Cited by 12 publications

(10 citation statements)

References 27 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: 95%

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: 95%

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

et al. 2022

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“…Bittencourt et al [ 26 ] found a weak positive correlation between PhA and muscle strength (r = 0.177, p = 0.029) and three other studies found a moderate positive correlation between PhA and muscle strength (range r: 0.422–0.696, p < 0.05) [ 25 , 27 , 30 ]. Contrary, Hetherington-Rauth et al [ 28 ] found no correlation between PhA and HGS in the adult and older adult groups.…”

Section: Resultsmentioning

confidence: 99%

“…Hetherington-Rauth et al [ 28 ] found no correlation between PhA and HGS in the adult and older adult groups. However, other included studies did find an association between PhA and HGS [ 25 , 26 , 27 , 29 , 30 ]. This was also true when comparing studies with similarly aged groups [ 25 , 29 ].…”

Section: Discussionmentioning

confidence: 98%

Factors of Muscle Quality and Determinants of Muscle Strength: A Systematic Literature Review

2022

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Muscle quality defined as the ratio of muscle strength to muscle mass disregards underlying factors which influence muscle strength. The aim of this review was to investigate the relationship of phase angle (PhA), echo intensity (EI), muscular adipose tissue (MAT), muscle fiber type, fascicle pennation angle (θf), fascicle length (lf), muscle oxidative capacity, insulin sensitivity (IS), neuromuscular activation, and motor unit to muscle strength. PubMed search was performed in 2021. The inclusion criteria were: (i) original research, (ii) human participants, (iii) adults (≥18 years). Exclusion criteria were: (i) no full-text, (ii) non-English or -German language, (iii) pathologies. Forty-one studies were identified. Nine studies found a weak–moderate negative (range r: [−0.26]–[−0.656], p < 0.05) correlation between muscle strength and EI. Four studies found a weak–moderate positive correlation (range r: 0.177–0.696, p < 0.05) between muscle strength and PhA. Two studies found a moderate-strong negative correlation (range r: [−0.446]–[−0.87], p < 0.05) between muscle strength and MAT. Two studies found a weak-strong positive correlation (range r: 0.28–0.907, p < 0.05) between θf and muscle strength. Muscle oxidative capacity was found to be a predictor of muscle strength. This review highlights that the current definition of muscle quality should be expanded upon as to encompass all possible factors of muscle quality.

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“…In a study of adults with obesity (60.8% female, mean age of 34.6) [ 22 ], PhA was positively correlated with lower- and upper-body maximal strength. Similarly, in malnourished or frail populations, it was found that PhA predicts muscle strength in women with anorexia nervosa [ 23 ] and is correlated with gait speed in older women [ 24 ]. Our finding that an increase in PhA correlates with a decrease in fat mass concurs with observations from weight loss studies.…”

Section: Discussionmentioning

confidence: 99%

Phase Angle and Bio-Impedance Values during the First Year after Delivery in Women with Previous Excessive Gestational Weight Gain: Innovative Data from the Belgian INTER-ACT Study

Bijlholt

Maslin

Ameye

et al. 2021

IJERPH

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Phase angle (PhA) is a body composition parameter that measures changes in the amount and quality of soft tissue. Few studies have explored PhA in pregnancy or postpartum. The aim of this study was to explore the PhA during the first year postpartum in a Belgian cohort using data from the control group of the INTER-ACT study, an intervention trial targeting those with excess gestational weight gain. A secondary aim was to examine associations between PhA and potential explanatory variables. Women aged ≥18 with excessive weight gain in a singleton pregnancy and without a chronic disease were eligible. Data collection included anthropometry as well as demographic and lifestyle questionnaires at 6 weeks, 6 months and 12 months postpartum. Body composition, including PhA, was measured with the Tanita MC780SMA device. Data was analysed using correlation and mixed model analyses. A total of 509 participants (median age 31.2) were included. The median PhA at 6 weeks postpartum was 5.8°. Higher PhA values were seen in multiparous women (p = 0.02) but there was no association with any other lifestyle or demographic factors. PhA values were positively associated with muscle mass and BMI (r = 0.13, p = 0.004 and r = 0.18, p < 0.001) at 6 weeks postpartum. PhA increased slightly in the 12 months postpartum, which was related to a decrease in fat percentage (p = 0.004). Further research in the pregnant/postpartum population is needed to elucidate any links with perinatal or future health outcomes.

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Phase Angle Reflects Loss of Functionality in Older Women

Cited by 12 publications

References 27 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

Factors of Muscle Quality and Determinants of Muscle Strength: A Systematic Literature Review

Phase Angle and Bio-Impedance Values during the First Year after Delivery in Women with Previous Excessive Gestational Weight Gain: Innovative Data from the Belgian INTER-ACT Study

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