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Related Experiment Video

Updated: Oct 30, 2025

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
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Is physical activity a trigger factor for subarachnoid hemorrhage?

C-H Mallereau1, J Todeschi1, E Lefevre2

  • 1Neurosurgery Department, Strasbourg University Hospital, Strasbourg, France.

Neuro-Chirurgie
|July 2, 2021
PubMed
Summary

Physical activity is rarely a trigger for subarachnoid hemorrhage (SAH). This study found no scientific evidence to support avoiding sports for unruptured intracranial aneurysms (ICAs).

Keywords:
Activité physiqueAnévrisme cérébral non rompuHémorragie sous-arachnoïdiennePhysical activitySportSubarachnoid hemorrhageUnruptured intracranial aneurysm

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Area of Science:

  • Neurology
  • Public Health
  • Sports Medicine

Background:

  • Subarachnoid hemorrhage (SAH) carries a high mortality rate (43%) and causes significant disability.
  • Current guidelines lack recommendations regarding physical activity for individuals with unruptured intracranial aneurysms (ICAs).
  • Some medical teams advise against all sports for patients with ICAs as a precautionary measure.

Purpose of the Study:

  • To evaluate the impact of physical activity as a risk factor for SAH.
  • To review existing literature on the association between physical exertion and SAH onset.
  • To provide evidence-based insights for clinical recommendations concerning physical activity in patients with ICAs.

Main Methods:

  • A systematic literature review was conducted from 2000 to 2020, adhering to PRISMA guidelines.
  • Included prospective and retrospective studies with over 50 patients where physical activity was linked to SAH onset.
  • The primary endpoint was the prevalence of SAH occurring post-physical activity; comparative prevalences for other activities were calculated.

Main Results:

  • Physical activity was associated with SAH onset in only 3% of cases, significantly lower than rest (30%), defecation (7.3%), or sexual activity (4.5%).
  • Factors associated with SAH during physical activity included age under 60, male gender (M/F ratio 1.38), and smoking (67.1%).

Conclusions:

  • Physical activity is an infrequent trigger for SAH.
  • The findings contradict the notion that physical activity should be avoided by patients with unruptured ICAs.
  • There is currently no scientific evidence to support an association between physical activity and aneurysmal SAH.