Changes in cardiopulmonary function according to posture during recovery after maximal exercise.
Gak Hwangbo, Doo Ho Lee, Seong Hoon Park and 1 others
PMID 28744038WHAT IT FOUND
After maximal exercise, oxygen uptake, breathing rate, and heart rate did not differ by posture in 15 healthy young men.
Air moved per minute was lower with trunk forward leaning at 5 minutes.
Key findings
01Oxygen uptake decreased in the order trunk forward leaning, sitting, then supine, but differences between postures were not statistically significant.
02Minute ventilation was significantly lower in the trunk forward leaning posture than in the sitting or supine posture at the 5-minute recovery point.
03Respiratory rate and heart rate showed no significant difference by posture during recovery, although heart rate changed over time within each posture.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The sample was 15 healthy male university students in their twenties, so the results may not apply to patients, older adults, or women. The authors caution that generalizing the results requires care. Dietary habits, nutrition, genetic characteristics, psychological state, and individual exercise ability were not accounted for. No primary outcome was specified, and several cardiopulmonary measures were compared, so the minute ventilation finding is one of several results. The study measured laboratory cardiopulmonary values, not patient symptoms, function, or time to recover.
The easy way to misread this
Do not use this paper to recommend a trunk forward leaning recovery posture for patients with breathing difficulty. It studied 15 healthy young men, oxygen uptake and heart rate did not differ by posture, and no patient symptoms or functional outcomes were measured.