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- Title
Aerobic Capacity Testing With Inactive Individuals: The Role of Subjective Experience.
- Authors
Magnan, Renee E.; Kwan, Bethany M.; Ciccolo, Joseph T.; Gurney, Burke; Mermier, Christine M.; Bryan, Angela D.
- Abstract
Background: Maximal oxygen uptake (VO2max), an assessment of cardiorespiratory fitness, is regularly used as the primary outcome in exercise interventions. Many criteria have been suggested for validating such tests--most commonly, a plateau in oxygen consumption. The current study investigated the proportion of inactive individuals who reached a plateau in oxygen uptake and who achieved a valid test as assessed by secondary criteria (RERmax ≥ 1.1; RPEmax ≥ 18; age predicted HRmax ±10bpm), and the correlates of a successful plateau or achievement of secondary criteria during a VO2max session. Methods: Participants (n = 240) were inactive individuals who completed VO2max assessments using an incremental treadmill test. We explored physical, behavioral, and motivational factors as predictors of meeting criteria for meeting a valid test. Results: Approximately 59% of the sample achieved plateau using absolute (increase of VO2 of 150ml O2 or less) and 37% achieved plateau using relative (increase of VO2 of 1.5ml/kg O2 or less) criteria. Being male, having a higher BMI, a greater waist-to-hip ratio, and increased self-efficacy were associated with lower odds of achieving an absolute plateau, whereas none of these factors predicted odds of achieving relative plateau. Conclusion: Findings raise questions about the validity of commonly used criteria with less active populations.
- Subjects
AEROBIC capacity; PHYSICAL fitness testing; OXYGEN consumption measurement; OXYGEN consumption; PHYSICAL fitness research; SEDENTARY people; HEALTH
- Publication
Journal of Physical Activity & Health, 2013, Vol 10, Issue 2, p271
- ISSN
1543-3080
- Publication type
Article
- DOI
10.1123/jpah.10.2.271