ArticleJACC. Case reports2026
Syncope During Cycling.
Article in JACC. Case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSyncope during exertion often heralds cardiac disease. CASE SUMMARY: We evaluated 2 cyclists with syncope during bicycling without identifiable cause, then identified 23 additional cyclists (mean age: 68 ± 8 years; 84% male) who had experienced 32 syncopal episodes during cycling to develop a clinical profile. Only 1 cyclist was aged <50. There were no reports of prodrome and 23 episodes of postsyncope confusion. Most episodes occurred on road bicycles with cyclists leaning forward (n = 19). Four cyclists recalled turning their head immediately before the event. No cardiac or neurological etiology was identified in the 23 cyclists. DISCUSSION: We conclude that cycling may be associated with syncope without an identifiable cause. TAKE-HOME MESSAGE: The etiology of this syndrome is unclear, but the age of the cyclists, the high rate of postevent confusion, and associated head turning in some participants raise the speculative possibility that this is a form of carotid sinus sensitivity.
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