Journal
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
Volume 16, Issue 3, Pages 325-332Publisher
HUMAN KINETICS PUBL INC
DOI: 10.1123/ijspp.2020-0812
Keywords
off-road running; athletes; ultra; training status; trained; elite
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The study found correlations between trail running performance and physiological parameters such as maximal aerobic capacity, lactate threshold, body fat percentage, and speed. Regression analysis indicated that multiple variables can better predict performance variation, emphasizing the need for trail-specific testing protocols in future research.
Purpose: To provide a systematic overview of physiological parameters used to determine the training status of a trail runner and how well these parameters correlate with real-world trail running performance. Method: An electronic literature search of the PubMed and Scopus digital databases was performed. Combinations of the terms trail run or trail runner or trail running and performance were used as search terms. Seven studies met the inclusion criteria. Results: Trail running performance most commonly correlated (mean [SD]) with maximal aerobic capacity (71%; r = -.50 [.32]), lactate threshold (57%; r = -.48 [.28]), velocity at maximal aerobic capacity (43%; r = -.68 [.08]), running economy (43%; r = -.31 [.22]), body fat percentage (43%; r =.55 [.21]), and age (43%; r =.52 [.14]). Regression analyses in 2 studies were based on a single variable predicting 48% to 60% of performance variation, whereas 5 studies included multiple variable regression analyses predicting 48% to 99% of performance variation. Conclusions: Trail running performance is multifaceted. The classic endurance model shows a weaker association with performance in trail running than in road running. Certain variables associated with trail running research (such as testing procedures, race profiles, and study participants) hinder the execution of comparative studies. Future research should employ trail-specific testing protocols and clear, objective descriptions of both the race profile and participants' training status.
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