Segmental Phase Angle and Body Composition Fluctuation of Elite Ski Jumpers between Summer and Winter FIS Competitions

Ostachowska-Gasior, Agnieszka; Piwowar, Monika; Zając, J.

doi:10.3390/ijerph18094741

Cited by 7 publications

(2 citation statements)

References 54 publications

(68 reference statements)

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“…Only one recent study preceded our work in investigating side‐to‐side differences in BIA PhA among elite athletes. As such, this study by Ostachowska‐Gasior et al (Ostachowska‐Gasior, Piwowar, & Zajac, 2021) found no significant side‐to‐side differences in PhA with the Inbody S10 device at lower limb level in elite ski jumpers (17–29 years old). The differences could potentially be explained by the symmetrical nature of ski jumping, which might reduce the degree of lower limb asymmetry.…”

Section: Discussionmentioning

confidence: 58%

Bioelectrical impedance analysis as a means of quantifying upper and lower limb asymmetry in youth elite tennis players: An explorative study

D’Hondt

Chapelle

Droogenbroeck

et al. 2021

European Journal of Sport Science

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This study aimed to examine side-to-side differences in phase angle (PhA) in both upper and lower limbs of youth elite tennis players. Among other outcomes, PhA was directly determined using segmental multifrequency bioelectrical impedance analysis (BIA) in 26 tennis players (11.6 ± 1.1 years, 54% boys) and compared against a sex-and age-matched reference population. Significant upper limb asymmetry in PhA (p < 0.001), with a higher value on the dominant side of the body, was observed in the tennis players. At lower limb level, the tennis players showed a tendency towards a significantly higher PhA in the contralateral compared to the ipsilateral limb (p = 0.089). Using vector analysis (BIVA), a significant degree of PhA asymmetry (p = 0.002) was only reflected in the tennis players' upper limb. Additional segmental outcomes also demonstrated a significant degree of upper limb asymmetry in terms of tennis players' lean mass (p < 0.001), total segmental water (p < 0.001), fat mass (p < 0.001), extracellular water (p < 0.001) and extracellular water ratio (p < 0.001), whereas lower limb asymmetry was only observed in tennis players' fat mass (p = 0.037) and extracellular water (p = 0.001). This is the first study to report significantly more pronounced BIA-based side-to-side differences in youth elite tennis players compared to a non-athletic reference population at the upper limb level, whereas no significant between-group differences in the lower limbs were found. This explorative study should trigger future research to further scrutinize the role of BI(V)A as a promising field-method in monitoring bodily asymmetries in youth elite tennis players in view of sport performance and athletic health. Highlights. Bioelectrical Impedance Analysis is a promising field-method to monitor side-to-side asymmetry in youth elite tennis players. . Youth elite tennis players displayed a more pronounced degree of BIA-based side-to-side differences compared to a non-athletic reference population at the upper limb level, whereas whilst between-group differences appeared to be less evident in the lower limbs. . Future research is warranted to scrutinize whether and to what extent these degrees of segmental bodily asymmetry may be related to injury risk (prevention) and athletic development of (pre)adolescent tennis players.

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Section: Discussionmentioning

confidence: 58%

Bioelectrical impedance analysis as a means of quantifying upper and lower limb asymmetry in youth elite tennis players: An explorative study

D’Hondt

Chapelle

Droogenbroeck

et al. 2021

European Journal of Sport Science

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“…The increasingly common stand-on impedance devices are not only more convenient for the participant but also readily provide impedance measurements of the individual body segments not simply the whole body (hand to foot) measurements. This has provided the opportunity to measure phase angle of the separate body regions [32][33][34][35] more easily than with SFBIA lead devices (Fig. 7) [36].…”

Section: Measurement Of Phase Angle Some Practical Concernsmentioning

confidence: 99%

Bioimpedance basics and phase angle fundamentals

Ward

Brantlov

2023

Rev Endocr Metab Disord

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Measurement of phase angle using bioimpedance analysis (BIA) has become popular as an index of so-called “cellular health”. What precisely is meant by this term is not always clear but strong relationships have been found between cellular water status (the relative amounts of extra- and intracellular water), cell membrane integrity and cellular mass. Much of the current research is empirical observation and frequently pays little regard to the underlying biophysical models that underpin the BIA technique or attempts to provide mechanistic explanations for the observations. This brief review seeks to provide a basic understanding of the electrical models frequently used to describe the passive electrical properties of tissues with particular focus on phase angle. In addition, it draws attention to some practical concerns in the measurement of phase angle and notes the additional understanding that can be gained when phase angle are obtained with bioimpedance spectroscopy (BIS) rather than single frequency BIA (SFBIA) along with the potential for simulation modelling.

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Segmental phase angles as predictors of functional recovery and activities of daily living in patients after stroke

Yoshimura,

Wakabayashi,

Nagano

et al. 2024

J Parenter Enteral Nutr

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BackgroundThis study investigated the association between segmental phase angles and functional outcomes in patients after stroke, hypothesizing that increased segmental phase angle correlates with improved functional status.MethodsA retrospective cohort study of 1012 patients after stroke was conducted. Whole body and segmental phase angles were measured using bioelectrical impedance analysis within 3 days of admission. Our exposure of interest was segmental phase angle measured via a multifrequency bioelectrical impedance analyzer and calculated as phase angle = arctangent (Xc/R) × (180/π), where R is the resistance of the right half of the body and Xc is the reactance measured at 50 kHz. The primary outcomes were the motor subscale of the functional independence measure (FIM) at discharge and FIM change between admission and discharge. Secondary outcomes included FIM scores for specific activities. Multiple linear regression analysis was performed to assess associations.ResultsPhase angles of the healthy upper and lower limbs demonstrated stronger associations with discharge FIM motor scores (β = 0.175 and β = 0.105, respectively) and FIM motor gain (β = 0.242 and β = 0.092, respectively) compared with whole body or paretic limb phase angles. Upper limb phase angles were more closely related to grooming and toileting abilities, whereas lower limb phase angles were associated with both toileting and locomotion at discharge.ConclusionSegmental phase angles, particularly those of the nonparetic limbs, are promising predictors of functional outcomes in patients after stroke. Assessing segmental phase angles may guide targeted interventions and rehabilitation strategies for improving specific activities of daily living.

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Segmental Phase Angle and Body Composition Fluctuation of Elite Ski Jumpers between Summer and Winter FIS Competitions

Cited by 7 publications

References 54 publications

Bioelectrical impedance analysis as a means of quantifying upper and lower limb asymmetry in youth elite tennis players: An explorative study

Bioelectrical impedance analysis as a means of quantifying upper and lower limb asymmetry in youth elite tennis players: An explorative study

Bioimpedance basics and phase angle fundamentals

Segmental phase angles as predictors of functional recovery and activities of daily living in patients after stroke

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