Factors Affecting Running Economy in Trained Distance Runners

Factors Affecting Running Economy in Trained Distance Runners

2004 | Philo U. Saunders, David B. Pyne, Richard D. Telford and John A. Hawley
The chapter discusses the factors affecting running economy (RE) in trained distance runners. RE is defined as the energy demand for a given submaximal running velocity, measured by steady-state oxygen consumption (VO2) and respiratory exchange ratio (RER). Good RE allows runners to use less energy and oxygen at the same velocity, and it is a better predictor of performance than maximal oxygen uptake (VO2max) in elite runners with similar VO2max. RE is typically measured on a treadmill under controlled conditions, and standardization is crucial to minimize measurement errors. When comparing RE between groups, body mass (BM) must be considered, as VO2 does not increase linearly with BM. Physiological and biomechanical factors, such as increased mitochondrial density, elastic energy storage, and efficient mechanics, influence RE. Interventions like strength training and altitude exposure are sought to improve RE. Future research should focus on methods to enhance RE that can be easily incorporated into athletes' training regimens. Efficient energy utilization is crucial for superior endurance performance, and RE is a key indicator of this efficiency.The chapter discusses the factors affecting running economy (RE) in trained distance runners. RE is defined as the energy demand for a given submaximal running velocity, measured by steady-state oxygen consumption (VO2) and respiratory exchange ratio (RER). Good RE allows runners to use less energy and oxygen at the same velocity, and it is a better predictor of performance than maximal oxygen uptake (VO2max) in elite runners with similar VO2max. RE is typically measured on a treadmill under controlled conditions, and standardization is crucial to minimize measurement errors. When comparing RE between groups, body mass (BM) must be considered, as VO2 does not increase linearly with BM. Physiological and biomechanical factors, such as increased mitochondrial density, elastic energy storage, and efficient mechanics, influence RE. Interventions like strength training and altitude exposure are sought to improve RE. Future research should focus on methods to enhance RE that can be easily incorporated into athletes' training regimens. Efficient energy utilization is crucial for superior endurance performance, and RE is a key indicator of this efficiency.
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[slides and audio] Factors Affecting Running Economy in Trained Distance Runners