Feasibility of short-term supine rehabilitation for pediatric orthostatic intolerance: a case series.

Only four patients at a single center, so the results cannot be generalised to other children or settings. No control group, so the authors themselves note that improvements may reflect hospitalisation, a structured daily routine, reduced stress, or increased supervision rather than the exercise itself. No statistical analysis was performed, so no significance testing was possible. Compliance was assessed only during the two-week hospital stay; there is no long-term follow-up to show whether any benefit lasted. Psychological and developmental factors were not systematically assessed, even though one patient had suspected selective mutism and autism spectrum disorder. The cardiac autonomic nervous system was not sufficiently evaluated, and the authors acknowledge that adrenergic receptor sensitivity may contribute to the observed responses. Conclusions rely primarily on subjective measures (fatigue scale) and school reintegration, while objective physiological changes were limited and inconsistent.

The authors declare no conflicts of interest and did not receive any funding.

Do not read the improved fatigue scores as proof that supine cycling treats orthostatic intolerance. There were four patients, no control group, and the authors themselves note that the improvements may reflect hospitalisation, a structured routine, reduced stress, or increased supervision rather than the exercise itself. Heart-rate responses were inconsistent across patients, and no long-term follow-up was available to confirm any lasting benefit.