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Published on: July 27, 2015
Durability Predicts Performance in Olympic Cross-Country Mountain Biking: Evidence From Intermittent Tests Under
Allan Inoue1,2, Manuel Mateo-March3, Gabriel Protzen4
1Exercise and Sport Sciences Postgraduate Program, Rio de Janeiro State University, Rio de Janeiro, Brazil.
Scandinavian Journal of Medicine & Science in Sports
|June 16, 2026
Summary
Field-based intermittent tests under fatigue better predict cross-country mountain biking performance. The ability to maintain power output during these tests distinguishes high-performance athletes from lower-performance ones.
Area of Science:
- Sports Science
- Exercise Physiology
- Cycling Performance Analysis
Background:
- Olympic cross-country mountain biking (XCO-MTB) requires sustained power output under fatigue.
- Predicting XCO-MTB performance necessitates tests that accurately simulate race conditions.
Purpose of the Study:
- To determine if field-based intermittent tests under fatigue predict XCO-MTB performance.
- To assess if prolonged exercise reduces power output during these tests.
- To investigate if maintaining power output under fatigue differentiates competitive levels in XCO-MTB athletes.
Main Methods:
- Twenty-five male XCO-MTB athletes completed intermittent tests (30/15, 10/20, 3/2) under fresh and fatigued conditions.
- The fatigued condition included a 140-minute protocol preceding each test.
- Performance was assessed via individual time-trial (ITT), and athletes were classified as high-performance (HP) or low-performance (LP).
Main Results:
- All intermittent tests strongly correlated with XCO-MTB ITT performance, with fatigued conditions showing stronger associations.
- The fatigued 10/20 test relative to body mass was the strongest predictor, explaining 89% of performance variance.
- Power output decreased significantly after the fatigue protocol, with greater declines observed in the LP group compared to the HP group.
Conclusions:
- Field-based intermittent tests under fatigue are valuable predictors of XCO-MTB performance.
- The capacity to sustain power output during repeated intermittent efforts under fatigue is a key differentiator of competitive level in XCO-MTB athletes.
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