Sudden cardiac arrest during marathons among young, middle-aged, and senior runners

Manabe, T; Kato, J; Yamasawa, F

doi:10.1016/j.resuscitation.2024.110415

Cardiac arrest & resuscitation

Sudden cardiac arrest during marathons among young, middle-aged, and senior runners

ResuscitationPublished 20 Oct 2024Prospective observational study

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Authors' conclusion

Men, unlike women, had a higher incidence of sudden cardiac arrest during marathons according to age.

Study context

Population: Runners in full marathons certified by the Japan Association of Athletics Federations, April 2011–March 2019516 marathons
Participants: 4.1 million runners

Exposure: Incidence of SCA by age group
Outcome: Sudden cardiac arrest (collapse during or 1 h after the race requiring chest compressions or automatic electrical defibrillation)

Main finding

As reported in the abstract

Incidence of SCA per 100,000 runners

< 40 s0.995% CI 0.4–1.4 · per 100,000 runners

40 s0.995% CI 0.4–1.4 · per 100,000 runners

50 s2.695% CI 1.5–3.8 · per 100,000 runners

≥ 60 s5.595% CI 2.9–8.2 · per 100,000 runners

Overall SCA: 69 (1.7 per 100,000 participants, 95% CI 1.3-2.1)

Observational data: associations, not effects.

Further findings

SCA by sex

SCA in men: 66
SCA in women (incidence did not differ by age group): 3

Original publication

Sudden cardiac arrest during marathons among young, middle-aged, and senior runners. Resuscitation. Published 20 October 2024. doi:10.1016/j.resuscitation.2024.110415

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