Key result
Aging is associated with reduced upward gas exchange and HR drift during exercise and slower recovery.
Why the study?
The effect of aging on the upward drift of gas exchange variables during submaximal exercise and recovery kinetics was not fully characterized.
Does aging affect gas exchange and heart rate dynamics during submaximal exercise and recovery?
Population
Aged and young subjects of equivalent age-predicted aerobic capacity
Comparison
Aged subjects vs young subjects during 70% maximal exercise
Design
Observational study
Follow-up
10 minutes post-exercise
Authors
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May support age-adjusted norms for submaximal exercise testing; leaves open effects on prognosis and interventions.
Observational
Does aging affect gas exchange and heart rate dynamics during submaximal exercise and recovery?
Aging is associated with altered gas exchange and heart rate dynamics during submaximal exercise and recovery, potentially reflecting reduced adrenergic responsiveness and CO2 chemosensitivity.
Chick et al. (1991) reported an observational. Aging vs. Young subjects was evaluated on Upward drift of gas exchange variables during 70% maximal exercise and recovery half-times. Aging was associated with reduced upward drift of gas exchange variables and heart rate during 70% maximal exercise and slowed recovery compared with young subjects.
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