New Findings What is the topic of this review? Biological and methodological factors
associated with the variable changes in cardiorespiratory fitness in response to endurance …

Lacking responses to endurance training (ET) have been observed for several variables.
However, detailed analyses of individuals' responses are scarce. To learn more about the …

There is evidence from human twin and family studies as well as mouse and rat selection
experiments that there are considerable interindividual differences in the response of …

Objective This study tested the hypothesis that greater mean changes in cardiorespiratory
fitness (CRF), in either the absence or presence of reduced interindividual variability …

Purpose We tested the hypothesis that monoexponential regressions will increase the
certainty in response estimates and confidence in classification of cardiorespiratory fitness …

Background There is individual variability to cardiorespiratory fitness (CRF) training, but the
underlying cause is not well understood. Traditionally, a standardized approach to exercise …

Large individual differences in the responsiveness of cardiorespiratory fitness (VO 2peak) to
endurance training have been observed in healthy subjects. We tested the hypothesis that …

The current study examined the adaptive response to both endurance (END) and sprint
interval training (SIT) in a group of twenty-one recreationally active adults. All participants …

The response to an exercise intervention is often described in general terms, with the
assumption that the group average represents a typical response for most individuals. In …

The key components of any training programme are the volume (how much), intensity (how
hard) and frequency (how often) of exercise sessions. These 'training impulses' determine …