Figure 1

Heart rate (HR, panel-A) and blood lactate concentrations (bLa, panel-B) expressed as a function of %VO 2max . Distance runners (○), race walkers (●), and untrained individuals (▴). Values are means ± SD.
Heart rate (HR, panel-A) and blood lactate concentrations (bLa, panel-B) expressed as a function of %VO 2max . Distance runners (○), race walkers (●), and untrained individuals (▴). Values are means ± SD.