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The Journal of Sports Medicine and Physical Fitness 2021 Sep 21

DOI: 10.23736/S0022-4707.21.12911-1

Copyright © 2021 EDIZIONI MINERVA MEDICA

language: English

Association of phase angle and appendicular upper and lower body lean soft tissue with physical performance in young elite soccer players: a pilot study

Tindaro BONGIOVANNI 1, 2, Alessio ROSSI 3 , F. Marcello IAIA 2, Giampietro ALBERTI 2, Giulio PASTA 4, Athos TRECROCI 2

1 Department of Health, Nutrition and Exercise Physiology, Parma Calcio 1913, Parma, Italy; 2 Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milano, Italy; 3 Department of Computer Science, University of Pisa, Pisa, Italy; 4 Medical Department, Parma Calcio 1913, Parma, Italy


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BACKGROUND: In soccer, a better understanding of the bioimpedance parameters with physical performance may be useful to efficiently monitor and interpret players’ performance variation throughout a certain period of the season. Therefore, this study aimed to examine the association between phase angle (PhA) and arms and legs lean soft tissue (ALST and LLST) with physical performance in young elite soccer players.
METHODS: Fifteen young male elite soccer players (age = 14.2±1.2 years, BMI = 20.51±1.38 kg/m2) participated in this investigation. Raw bioimpedance parameters (reactance, resistance, and phase angle) were obtained by a bioelectrical impedance analysis (BIA) device. Then, ALST and LLST were estimated. All players underwent a physical testing battery including countermovement jump (CMJ), 10-m and 20-m sprint, and Yo-Yo Intermittent Recovery Test level 1 (YoYo IRTL1) in the domains of anaerobic and aerobic performance, respectively.
RESULTS: The results showed that LST (total, arms and legs) positively correlated with CMJ (0.64 < r < 0.69; p < 0.001) and negatively correlated with 10-m (-0.59 < r < -0.63; p < 0.05) and 20-m sprint (-0.67 < r < -0.73; p < 0.001), while PhA positively correlated with CMJ (r = 0.57; p < 0.05) and negatively correlated (r = -0.54; p < 0.05) only with 20-m sprint. No significant association was found between the BIA-related parameters (PhA and LST) and Yo- Yo IRT level 1.
CONCLUSIONS: The present findings highlight the existing association of PhA and LST with jumping and sprinting performance in young elite soccer players. This result supports the use of BIA-related measures as a simple and practical approach to monitoring anaerobic performance changes, rather than aerobic, over time throughout the season.


KEY WORDS: Morphology; Lean soft tissue; Bioelectrical impedance analysis; Anaerobic performance

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