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Int J Sports Physiol Perform. 2015 Nov;10(8):958-64. doi: 10.1123/ijspp.2015-0004. Epub 2015 Feb 24.

Monitoring Fatigue During the In-Season Competitive Phase in Elite Soccer Players.

Author information

1
Research Inst for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK.

Abstract

PURPOSE:

To quantify the relationship between daily training load and a range of potential measures of fatigue in elite soccer players during an in-season competitive phase (17 d).

METHODS:

Total high-intensity-running (THIR) distance, perceived ratings of wellness (fatigue, muscle soreness, sleep quality), countermovement-jump height (CMJ), postexercise heart-rate recovery (HRR), and heart-rate variability (Ln rMSSD) were analyzed during an in-season competitive period (17 d). General linear models were used to evaluate the influence of daily fluctuation in THIR distance on potential fatigue variables.

RESULTS:

Fluctuations in fatigue (r = -.51, large, P < .001), Ln rMSSD (r = -.24, small, P = .04), and CMJ (r = .23, small, P = .04) were significantly correlated with fluctuations in THIR distance. Correlations between variability in muscle soreness, sleep quality, and HRR and THIR distance were negligible and not statistically significant.

CONCLUSIONS:

Perceived ratings of fatigue and Ln rMSSD were sensitive to daily fluctuations in THIR distance in a sample of elite soccer players. Therefore, these particular markers show promise as simple, noninvasive assessments of fatigue status in elite soccer players during a short in-season competitive phase.

PMID:
25710257
DOI:
10.1123/ijspp.2015-0004
[Indexed for MEDLINE]

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