Key result
High metabolic load distance was significantly greater in peak, post-peak, and mean 5-minute periods compared to high-speed running (P<0.001), and correlated with heart rate recovery (r=-0.331).
Observational (n=13)
Effect estimate: r = -0.331
p-value: p=<0.001
Heart rate recovery measured after a submaximal YO-YO IR1 has limited potential in assessing match-specific fitness of elite soccer players.
HR recovery after submaximal Yo-Yo IR1 has limited value for match fitness assessment in elite soccer; leaves open validation of metabolic load metrics.
Purpose: The aims of the study were to investigate (1) fluctuations in kinematic and locomotor-based metabolic power estimates during elite-level under-21 soccer matches and (2) the relationship between temporary fatigue during matches and heart rate (HR) responses to the YO-YO intermittent recovery test 1 (YO-YO IR1).Methods: High-speed running (HSR), high metabolic load (HML) distances and average metabolic power (AMP) data were collected from 13 elite soccer players during 6 matches using global positioning systems. Indices of heart rate recovery (HRR60s; HR60s; %HRR60s) were assessed after a submaximal (YO-YO IR1). The peak 5-min period of matches was higher than both the subsequent 5-min period and the match average for all physical variables (P < 0.001).Results: HML distance was greater (P < 0.001) in peak, post-peak and mean 5-min periods compared to HSR. Peak intensity HML distance was related to %HRR60s (r = −0.331) but not AMP (r = −0.273) or HSR distance (r = −0.224).Conclusions: HML distance should be used to monitor fluctuations in intensity during soccer matches. HRR measured after a submaximal YO-YO IR1 has limited potential, in the assessment of the match specific fitness of players.
No takes yet. Share an insight, caveat, or question.
Fox et al. (2017) conducted an observational in Elite-level under-21 soccer players (n=13). High metabolic load (HML) distance vs. High-speed running (HSR) was evaluated on Fluctuations in kinematic and locomotor-based metabolic power estimates and relationship with heart rate recovery (r = -0.331, p=<0.001). High metabolic load distance was significantly greater in peak, post-peak, and mean 5-minute periods compared to high-speed running (P<0.001), and correlated with heart rate recovery (r=-0.331).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: