Effects of supine ergometer exercise on central and peripheral circulation in patients with ischemic heart disease.
Naoki Matsumoto, Yuto Mochizuki, Marin Yamazaki and 3 others
PMID 41328281WHAT IT FOUND
For men with ischemic heart disease, pedaling lying down increased leg blood flow and parasympathetic activity compared to sitting.
However, heart rate, blood pressure, and perceived exertion remained similar between positions. No adverse events occurred.
Key findings
01Supine exercise resulted in significantly higher lower-limb blood flow and HF power than seated exercise.
02There were no significant differences between supine and seated postures in heart rate, systolic blood pressure, double product, or subjective measures of exertion.
03No adverse events occurred in either posture during the study.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study included only ten male participants, limiting generalizability to women and broader populations. Only acute effects were measured; long-term adaptations and clinical outcomes remain unknown. Sixty percent of participants were taking beta-blockers, which may have blunted heart rate and blood pressure responses and masked potential differences between postures. The sample size was small and calculated for a specific effect size, making the results preliminary.
Declared interests
The study was supported by JSPS KAKENHI (grant number: JP21K12803). The authors declared no conflicts of interest.
The easy way to misread this
Do not conclude that supine exercise reduces cardiac workload or perceived effort compared to seated exercise. The study found no significant difference in heart rate, blood pressure, or subjective exertion between the two positions; the benefits were specific to increased leg blood flow and parasympathetic activity.
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 →