Complexity of the Relation Between Physical Activity and Stroke: A Meta-Analysis
Notice bibliographique
Résumé
OBJECTIVE: To explore the associations of recreational and occupational physical activity with ischemic and hemorrhagic stroke by means of meta-analysis. DATA SOURCES: PUBMED was searched for studies published in English up to December 2001. Keywords used were physical activity, exercise, cerebrovascular disease, stroke, ischaemic stroke, and haemorrhagic stroke. Reference lists were reviewed for additional studies. STUDY SELECTION: Cohort and case-control studies investigating the relation between physical activity and stroke were identified (n = 36). The article reporting the longest follow-up time was included if there was > or =1 report of the same study (4 exclusions). Studies had to report a measure of physical activity. A study that measured physical fitness was excluded. DATA EXTRACTION: Details of study methods, samples, levels of physical activity, types of stroke, and estimates of risk (relative risk, RR) were extracted independently by 3 reviewers from the 24 cohort and 7 case-control studies that were included. Authors of relevant studies were contacted to obtain missing data. Risk estimates were standardized. Risks for subgroups within the samples (e.g., women and men) were treated as separate study units. Physical activity was separated into occupational and leisure activity. MAIN RESULTS: In studies of occupational activity, risk of hemorrhagic stroke (RR, 0.31; 95% CI, 0.13-0.76; 1 study) and risk of ischemic stroke (RR, 0.57; CI, 0.43-0.77; 5 studies) were lower for people most active versus inactive at work, risk of ischemic stroke was lower for people who were most active versus moderately active (RR, 0.77; CI, 0.60-0.98; 5 studies), and risk of total stroke was lower for people moderately active versus inactive (RR, 0.64; CI, 0.48-0.87; 4 studies), but none of the other 8 comparisons of level of occupational activity showed significant differences. In studies of leisure-time activity, risk of total stroke (RR, 0.78; CI, 0.71-0.85; 19 studies), risk of hemorrhagic stroke (RR, 0.74; CI, 0.57-0.96, 9 studies), and risk of ischemic stroke (RR, 0.79; CI, 0.69-0.91; 11 studies) were lower for people most active versus inactive. Risk of total stroke was lower for people moderately active versus inactive (RR, 0.85; CI, 0.78-0.93; 15 studies), but none of the other 7 comparisons showed significant differences. In regression analysis weighted by methodologic quality, RR of stroke for active persons was slightly lower, with narrower confidence intervals. Leisure-time activity compared with inactivity was associated with a greater reduction in risk of hemorrhagic stroke in men (RR, 0.54; CI, 0.36-0.81) than in women (RR, 0.76; CI, 0.67-0.86). Studies conducted in Europe found more effect of activity (RR, 0.47; CI, 0.33-0.66; 3 studies) than US studies (RR, 0.82; CI, 0.75-0.90). Study results did not differ by type of study or year of publication. CONCLUSIONS: Recreational and occupational physical activity were both associated with reductions in risk of stroke. Studies varied widely in their estimates of risk; lower risks were found for active versus inactive men than women and for European versus US studies.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,049 | 0,099 |
| Méta-épidémiologie (sens strict) | 0,005 | 0,003 |
| Méta-épidémiologie (sens large) | 0,028 | 0,076 |
| Bibliométrie | 0,009 | 0,008 |
| Études des sciences et des technologies | 0,001 | 0,001 |
| Communication savante | 0,006 | 0,003 |
| Science ouverte | 0,004 | 0,003 |
| Intégrité de la recherche | 0,003 | 0,003 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,003 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».