Integrating the Internal and External Training Load in Soccer.

International journal of sports physiology and performance

PubMedID: 23475154

Akubat I, Barrett S, Abt G. Integrating the Internal and External Training Load in Soccer. Int J Sports Physiol Perform. 2013;.
PURPOSE: This study aimed to assess the relationships of fitness in soccer players with a novel integration of internal and external training load (TL). DESIGN: Ten amateur soccer players performed a lactate threshold (LT) test followed by a soccer simulation (BEAST90mod). METHODS: The results from the LT test were used to determine vLT, vOBLA, VO2max and the heart rate-blood lactate profile for calculation of internal TL (iTRIMP). The total distance (TD) and high intensity distance (HID) covered during the BEAST90mod was measured using GPS technology that allowed measurement of performance and external TL. The internal TL was divided by the external TL to form iTRIMP:TD and iTRIMP:HID ratios. Correlation analyses assessed the relationships between fitness measures and the ratios to performance in the BEAST90mod. RESULTS: vLT, vOBLA and vO2max showed no significant relationship to TD or HID. iTRIMP:HID significantly correlated with vOBLA (r=0.65; p=0.04; Large) and iTRIMP:TD showed a significant correlation with vLT (r=0.69; p=0.03; Large). CONCLUSIONS: The results suggest that the integrated use of ratios may help in the assessment of fitness, as performance alone showed no significant relationships with fitness.