Magnesium and phase angle: a prognostic tool for monitoring cellular integrity in judo athletes

Matias, Catarina N.; Monteiro, Cristina P.; Santos, Diana A.; Martins, Fátima; Silva, Analiza M.; Laires, Maria José; Sardinha, Luís B.

doi:10.1684/mrh.2015.0389

Cited by 30 publications

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“…The negative relationship between Xc and ECW in both sexes may be a possible biological justification for the high values of Xc in this study when compared to a clinical population [28,29] Concerning PhA, in this study males presented a mean value of 7.9 • ± 0.7 and females a mean value of 6.9 • ± 0.6. These values are similar to those found in other studies conducted in athletes or active young population [6,17,24,30,31]. However, the values found in present study are slightly below those proposed by Barbosa-Silva and colleagues [32] according to gender and age for healthy adult population.…”

Section: Discussionsupporting

confidence: 90%

“…Regarding R, in this study, it was found that the males presented significantly lower values than the females (329.0Ω/m ± 39.6 and 251.8Ω/m ± 31.8, respectively). These values extend results observed in other studies performed in athletes [6,17]. R refers to the opposition offered by the human body to the passage of an electric current.…”

Section: Discussionsupporting

confidence: 88%

“…Bioelectrical impedance analysis (BIA) has been widely used as a rapid, safe and non-invasive method for monitoring active adults performing recreational exercise and elite athletes [4][5][6] and in estimating body composition and nutritional status in healthy non-athletes and adults with clinical conditions [7][8][9]. Alternating current is introduced into the body by bioimpedance electronic devices at single or multiple frequencies.…”

Section: Introductionmentioning

confidence: 99%

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The Predictive Role of Raw Bioelectrical Impedance Parameters in Water Compartments and Fluid Distribution Assessed by Dilution Techniques in Athletes

Francisco

Matias

Santos

et al. 2020

IJERPH

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The aims of this study were to analyze the usefulness of raw bioelectrical impedance (BI) parameters in assessing water compartments and fluid distribution in athletes. A total of 202 men and 71 female athletes were analyzed. Total body water (TBW) and extracellular water (ECW) were determined by dilution techniques, while intracellular water (ICW) was calculated. Fluid distribution was calculated as the ECW/ICW ratio (E:I). Phase angle (PhA), resistance (R) and reactance (Xc) were obtained through BI spectroscopy using frequency 50kHz. Fat (FM) and fat-free mass (FFM) were assessed by dual-energy X-ray absorptiometry. After adjusting for height, FM, FFM, age and sports category we observed that: PhA predicted ICW (females: β = 1.62, p < 0.01; males: β = 2.70, p < 0.01) and E:I (males and females: β = −0.08; p < 0.01); R explained TBW (females: β = −0.03; p < 0.01; males: β = −0.06; p < 0.01) and ECW (females: β = –0.02, p < 0.01; males: β = −0.03, p < 0.01) and ICW (females: β = –0.01, p < 0.053; males: β = –0.03 p < 0.01); and Xc predicted ECW (females: β = −0.06, p < 0.01; males: β = −0.12, p < 0.01). A higher PhA is a good predictor of a larger ICW pool and a lower E:I, regardless of body composition, age, height, and sports category. Lower R is associated with higher water pools whereas ECW expansion is explained by lower Xc. Raw BI parameters are useful predictors of total and extracellular pools, cellular hydration and fluid distribution in athletes.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

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The Predictive Role of Raw Bioelectrical Impedance Parameters in Water Compartments and Fluid Distribution Assessed by Dilution Techniques in Athletes

Francisco

Matias

Santos

et al. 2020

IJERPH

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“…In this study, PhA (7.5 ± 0.8) was similar to those reported in Italian elite soccer players [6] (7.3 ± 0.6), Brazilian athletes from different modalities [5] (7.6 ± 0.7) and Portuguese judo athletes [23] (7.7 ± 0.6). On the other hand, PhA in this study was higher than that of another study with Brazilian soccer players [4] (6.3 ± 0.8).…”

Section: Discussionsupporting

confidence: 87%

Phase Angle is Moderately Associated with Short-term Maximal Intensity Efforts in Soccer Players

et al. 2019

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This study examined the relationship between PhA and short-term maximal intensity efforts in soccer players, and was conducted in 99 male soccer players, ages 19–36 years. Bioelectrical impedance was used to assess body fat, fat free mass (FFM) and PhA (phase angle). Running Anaerobic Sprint Test (RAST) was used to evaluate physical performance. Food consumption was assessed through the 24-hour dietary recall method. Pearson correlation and multiple regressions were used for statistical analysis. Phase angle exhibited a positive relationship with maximum power (β=0.66; P<0.001), even after adjustment for the co-variables FFM and body fat (β=0.52; P=0.02). Phase angle was inversely related with fatigue index (β=− 0.61; P=0.04), even after adjusting for FFM (β=− 0.70; P=0.020). Our results indicated that independently of FFM and body fat, PhA was inversely associated with fatigue index and positively related with maximum power, revealing the PhA appeared as a valid predictor of fatigue.

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“…Considering the potential health-related implications, PhA has been investigated as a means to assess nutritional status (Zhang et al, 2014). In the areas of exercise science and sports medicine, PhA has often been analyzed in cross-sectional observational (Piccoli et al, 2007) and prospective (Mascherini et al, 2015;Matias et al, 2015) studies. Cross-sectional studies have shown that the PhA can be affected by physical activity (Dittmar, 2003;Torres et al, 2008;Koury et al, 2014;Mala et al, 2015).…”

mentioning

confidence: 99%

Effect of resistance training on phase angle in older women: A randomized controlled trial

Souza

Tomeleri

Ribeiro

et al. 2016

Scandinavian Med Sci Sports

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Phase angle (PhA) is an angular-derived bioelectrical impedance parameter based on resistance and reactance that has been widely used in different populations as an objective indicator of cellular health. The purpose of this study was to analyze the effect of resistance training (RT) on PhA in older women. Forty-one older women (67.2 ± 4.5 years, 64.0 ± 12.3 kg, 154.7 ± 5.2 cm, and 26.6 ± 4.8 kg/m ) were randomly assigned to one of two groups: a training group (TG, n = 19) that underwent progressive RT for 12 weeks (eight exercises, three sets of 10-15 repetitions maximum, three times per week) or a control group (CG, n = 22) that did not perform any type of exercise during the intervention period. Resistance, reactance, PhA, total body water (TBW), intracellular (ICW) and extracellular (ECW) water were assessed by spectral bioelectrical impedance. There was a significant group by time interaction (P < 0.05) for PhA, TBW, and ICW in which only the TG increased their scores after the intervention period (PhA = +6.5%, TBW = +2.8%, and ICW = +5.1%). The results suggest that progressive RT promotes an increase in PhA in older women. Therefore, the PhA seems to be a good parameter to assess changes in cellular health during RT intervention.

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Magnesium and phase angle: a prognostic tool for monitoring cellular integrity in judo athletes

Cited by 30 publications

References 0 publications

The Predictive Role of Raw Bioelectrical Impedance Parameters in Water Compartments and Fluid Distribution Assessed by Dilution Techniques in Athletes

The Predictive Role of Raw Bioelectrical Impedance Parameters in Water Compartments and Fluid Distribution Assessed by Dilution Techniques in Athletes

Phase Angle is Moderately Associated with Short-term Maximal Intensity Efforts in Soccer Players

Effect of resistance training on phase angle in older women: A randomized controlled trial

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