ABSTRACT
This chapter focuses on key determinants which have been shown to explain differences between athletes in distance running performance; Maximal oxygen uptake, running economy, and lactate threshold. Assessment options exist for the physiological evaluation of a wide range of laboratory and field-based parameters. The endeavour for continued performance improvement by athletes highlights the need to recognise mechanisms to optimise athletes’ training. Whilst physiological assessments may be conducted for a variety of reasons, a commonly cited rationale for their use includes providing an evaluation of strengths and weakness of the athlete. In order to minimise the impact of biological sources of error within a performance test, a consistent pre-test routine is important prior to all repeat visits. The degree of change in RE following a period of endurance training will depend on the initial fitness level of the individual, with greater scope for a higher magnitude improvement in less highly trained individuals.
