Skip to main content

Research Repository

Advanced Search

The validity of external: internal training load ratios in rested and fatigued soccer players

Akubat, Ibrahim; Barrett, Steve; Sagarra, Manuel Lapuente; Abt, Grant


Ibrahim Akubat

Steve Barrett

Manuel Lapuente Sagarra


Purpose: To examine the relationship of external:internal training load ratios with fitness and assess the impact of fatigue. Method: Ten soccer players performed a lactate threshold test followed by two soccer simulations (BEAST90mod ) 48 h apart. Recovery (TQR) and muscle soreness (DOMS) was measured before each trial. Internal Training load (TL) (iTRIMP) and external load total distance (TD), high intensity distance (HID), PlayerLoad™ (PL) mean metabolic power (MMP) high metabolic power distance (HP) were collected for each trial and external:internal ratios produced. The relationships between ratios and velocity at lactate threshold (vLT) and velocity at Onset of Blood Lactate Accumulation (vOBLA) were examined in both trials along with changes in ratios. Results: Total Quality of Recovery and DOMS showed large changes. There were trivial to large decreases in TL from trial 1 to 2. Moderate increases in ratios for TD:iTRIMP, PL:iTRIMP and MMP:iTRIMP were seen but only small/trivial for HP:iTRIMP and HID:iTRIMP. In rested conditions all ratios show large relationships with vLT and vOBLA. However vLT vs. HID:iTRIMP; PL:iTRIMP; HP:iTRIMP and vOBLA vs. TD:iTRIMP; PL:iTRIMP; MMP:iTRIMP became weaker under fatigue. Conclusions: Acute changes in the ratios have implications forthe use of ratios as fitness measures but also as indicators of fatigue.


Akubat, I., Barrett, S., Sagarra, M. L., & Abt, G. (2018). The validity of external: internal training load ratios in rested and fatigued soccer players. Sports, 6(2), 44.

Journal Article Type Article
Acceptance Date May 14, 2018
Online Publication Date May 19, 2018
Publication Date Jun 1, 2018
Deposit Date Jul 5, 2018
Publicly Available Date Jul 6, 2018
Journal Sports
Electronic ISSN 2075-4663
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 6
Issue 2
Pages 44
Keywords Fitness; Heart rate; TRIMP; GPS (Global Positionining Systems); PlayerLoad; Metabolic power; Team sports; Monitoring
Public URL
Publisher URL
Contract Date Jul 6, 2018


Published article (588 Kb)

Copyright Statement
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

You might also like

Downloadable Citations