Hemodynamic responses and functional aerobic capacity in adults: insights from NASA method estimated VO₂.
Leonardo Arzayus-Patiño, Jenifer Rodriguez-Castro, Jhonatan Betancourt-Peña and 2 others
PMID 41808742WHAT IT FOUND
Longer tests like the 1-minute sit-to-stand and 2-minute step test caused higher heart rate and blood pressure, but only the sit-to-stand variants correlated with estimated aerobic capacity.
The 2-minute step test showed no link to estimated fitness despite its higher physical demand.
Key findings
01The 2-minute step test and 1-minute sit-to-stand test produced the highest hemodynamic responses, including heart rate and blood pressure.
02Sit-to-stand variants showed significant positive correlations with estimated aerobic capacity, while the 2-minute step test did not.
03Oxygen saturation remained stable across all tests, with no clinically relevant reductions.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The study included only healthy or clinically stable adults, so results do not apply to patients with acute or unstable chronic conditions. Aerobic capacity was estimated using a formula rather than measured directly via cardiopulmonary exercise testing. The sample size was relatively small for a correlational study. Tests were conducted in a controlled setting, which may not reflect real-world application conditions.
Declared interests
The research was funded by the Dirección General de Investigaciones of Universidad Santiago de Cali. The authors declared financial support was received for this work and/or its publication.
The easy way to misread this
Do not assume the 2-minute step test is a valid proxy for aerobic capacity in healthy adults. Although it produced the highest heart rate and blood pressure responses, it showed no significant correlation with estimated VO2 when using the Hemodynamic Gain Index, unlike the sit-to-stand variants.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →