Trajectories in leisure-time physical activity and risk of stroke in women in the California Teachers Study
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Background and Purpose—: Whether changes in leisure-time physical activity (LTPA) over time are associated with lower risk of stroke is not well established. We examined the association between changes in self-reported LTPA 10 years apart, with risk of incident stroke in the CTS (California Teachers Study). We hypothesized that the risk of stroke would be lowest among those who remained active. Methods—: Sixty-one thousand two hundred and fifty-six CTS participants reported LTPA at 2 intensity levels (moderate and strenuous activity) at 2 time points (baseline 1995–96; 10-year follow-up 2005–2006). LTPA at each intensity level was categorized based on American Heart Association (AHA) recommendations (moderate, >150 minutes/week; strenuous, >75 minutes/week). Changes in LTPA were summarized as follows: (1) not meeting recommendations at both time points; (2) meeting recommendations only at follow-up; (3) meeting recommendations only at baseline; and (4) meeting recommendations at both time points. Incident strokes were identified through California state hospitalization records. Using multivariable Cox models, we examined the associations between changes in LTPA with incident stroke. Results—: Nine hundred and eighty-seven women were diagnosed with stroke who completed both questionnaires. Meeting AHA recommendations at both the time points was associated with a lower risk of all stroke (adjusted hazard ratio, 0.84; 95% confidence interval, 0.72–0.98). The protective effects for stroke were driven by meeting AHA recommendations for moderate activity and largely observed for ischemic strokes (adjusted hazard ratio, 0.70; 95% confidence interval, 0.55–0.88). Conclusions—: Meeting AHA recommendations for moderate activity had a protective effect for reducing ischemic stroke risk. Participants who met AHA recommendations at baseline but not at follow-up, however, were not afforded reduced stroke risk.
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Thirteen included papers included women only, and no included studies included only men.
“Thirteen papers included women only,53–65 and no studies included only men.”
From Sex Differences in Physical Activity and Incident Stroke: A Systematic Review (2022) · cites this paper as [58]
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Cites
Heart Disease and Stroke Statistics—2015 Update: A Report From the American Heart Association
Mozaffarian, D., Benjamin, E. J., Go, A. S., Arnett, D. K., Blaha, M. J., Cushman, M., de Ferranti, S., Després, J.-P., Fullerton, H. J., Howard, V. J., et al. (2015) · Circulation · doi:10.1161/cir.0000000000000152 · Cited by 5,797 · see citing works
Self-citationO'Donnell, M. J., Xavier, D., Liu, L., Zhang, H., Chin, S. L., Rao-Melacini, P., Rangarajan, S., Islam, S., Pais, P., McQueen, M. J., et al. (2010) · The Lancet · doi:10.1016/s0140-6736(10)60834-3 · Cited by 3,448 · see citing works
Physical Activity and Stroke Risk: A Meta-Analysis
Lee, C. D., Folsom, A. R., & Blair, S. N. (2003) · Stroke · doi:10.1161/01.str.0000091843.02517.9d · Cited by 829 · cited 1× · see citing works
“Hypertension 11 092 (18) 4090 (22) 1936 (17) 1731 (20) 3335 (15)”
Carnethon, M. R. (2003) · JAMA · doi:10.1001/jama.290.23.3092 · Cited by 691 · cited 2× · see citing works
“30+ 7778 (13) 3687 (20) 1561 (14) 1063 (13) 1467 (7)”
Physical activity and risk of stroke in women
Hu, F. B. (2000) · JAMA · doi:10.1001/jama.283.22.2961 · Cited by 531 · see citing works
A Natural History of Athleticism and Cardiovascular Health
Paffenbarger, R. S. (1984) · JAMA: The Journal of the American Medical Association · doi:10.1001/jama.1984.03350040021015 · Cited by 405 · cited 1× · see citing works
“30+ 7778 (13) 3687 (20) 1561 (14) 1063 (13) 1467 (7)”
Physical Activity and Stroke Incidence
Lee, I.-M. M., & Paffenbarger, R. S. (1998) · Stroke · doi:10.1161/01.str.29.10.2049 · Cited by 284 · cited 2× · see citing works
“Current 2422 (4) 889 (5) 473 (4) 341 (4) 719 (3)”
Comparison of baseline and repeated measure covariate techniques in the Framingham heart study
Cupples, L. A., D’Agostino, R. B., Anderson, K. M., & Kannel, W. B. (1988) · Statistics in Medicine · doi:10.1002/sim.4780070122 · Cited by 254 · cited 2× · see citing works
“<20 6366 (10) 1626 (9) 1182 (11) 829 (10) 2729 (13)”
Bernstein, L., Allen, M. S., Anton‐Culver, H., Deapen, D., Horn‐Ross, P. L., Peel, D. A., Pinder, R., Reynolds, P., Sullivan‐Halley, J., West, D. W., et al. (2002) · Cancer Causes & Control · doi:10.1023/a:1019552126105 · Cited by 251 · cited 4× · see citing works
“<20 6366 (10) 1626 (9) 1182 (11) 829 (10) 2729 (13)”
InfluentialSelf-citationLong-term leisure-time physical activity and serum metabolome
Kujala, U. M., Mäkinen, V.-P., Heinonen, I., Soininen, P., Kangas, A. J., Leskinen, T. H., Rahkila, P., Würtz, P., Kovanen, V., Cheng, S., et al. (2013) · Circulation · doi:10.1161/circulationaha.112.105551 · Cited by 239 · cited 2× · see citing works
“Below median 11 940 (19) 4306 (23) 2204 (19) 1762 (21) 3668 (17)”
Bateman, L. A., Slentz, C. A., Willis, L. H., Shields, A. T., Piner, L. W., Bales, C. W., Houmard, J. A., & Kraus, W. E. (2011) · The American Journal of Cardiology · doi:10.1016/j.amjcard.2011.04.037 · Cited by 235 · cited 2× · see citing works
“Never 10 723 (18) 4188 (24) 2058 (19) 1442 (18) 3035 (14)”
Physical Activity and Stroke Incidence in Women and Men: The NHANES I Epidemiologic Follow-up Study
Gillum, R. F., Mussolino, M. E., & Ingram, D. D. (1996) · American Journal of Epidemiology · doi:10.1093/oxfordjournals.aje.a008829 · Cited by 195 · cited 4× · see citing works
“Current 2422 (4) 889 (5) 473 (4) 341 (4) 719 (3)”
InfluentialLong-term Recreational Physical Activity and Risk of Invasive and In Situ Breast Cancer
Dallal, C. M. (2007) · Archives of Internal Medicine · doi:10.1001/archinte.167.4.408 · Cited by 159 · cited 3× · see citing works
“Never 10 723 (18) 4188 (24) 2058 (19) 1442 (18) 3035 (14)”
Shah, R. V., Murthy, V. L., Colangelo, L. A., Reis, J., Venkatesh, B. A., Sharma, R., Abbasi, S. A., Goff, D. C., Carr, J. J., Rana, J. S., et al. (2016) · JAMA Internal Medicine · doi:10.1001/jamainternmed.2015.6309 · Cited by 158 · cited 2× · see citing works
“Below median 11 940 (19) 4306 (23) 2204 (19) 1762 (21) 3668 (17)”
Physical Activity and Ischemic Stroke Risk
Evenson, K. R., Rosamond, W. D., Cai, J., Toole, J. F., Hutchinson, R. G., Shahar, E., & Folsom, A. R. (1999) · Stroke · doi:10.1161/01.str.30.7.1333 · Cited by 133 · cited 7× · see citing works
“Changes in LTPA were summarized as follows: (1) not meeting recommendations at both time points; (2) meeting recommendations only at follow-up; (3) meeting recommendations only at baseline; and (4) meeting recommendations at both time points.”
InfluentialPhysical activity frequency and risk of incident stroke in a national US study of blacks and whites
McDonnell, M. N., Hillier, S. L., Hooker, S. P., Le, A., Judd, S. E., & Howard, V. J. (2013) · Stroke · doi:10.1161/strokeaha.113.001538 · Cited by 122 · see citing works
Physical activity and risk of ischemic stroke in the Northern Manhattan Study
Willey, J. Z., Moon, Y. P., Paik, M. C., Boden-Albala, B., Sacco, R. L., & Elkind, M. S. V. (2009) · Neurology · doi:10.1212/wnl.0b013e3181c34b58 · Cited by 122 · cited 1× · see citing works
“<20 6366 (10) 1626 (9) 1182 (11) 829 (10) 2729 (13)”
Self-citationPHYSICAL ACTIVITY AND RISK OF ISCHEMIC STROKE IN THE NORTHERN MANHATTAN STUDY
Landau, W. M. (2010) · Neurology · doi:10.1212/wnl.0b013e3181e03150 · Cited by 110 · see citing works
Bann, D., Kuh, D. J., Wills, A. K., Adams, J. E., Brage, S., & Cooper, R. (2014) · American Journal of Epidemiology · doi:10.1093/aje/kwu033 · Cited by 91 · cited 1× · see citing works
“Former 7125 (12) 2394 (14) 1360 (13) 1041 (13) 2330 (11)”
The new American Heart Association 2020 goal: achieving ideal cardiovascular health
Sacco, R. L. (2011) · Journal of Cardiovascular Medicine · doi:10.2459/jcm.0b013e328343e986 · Cited by 89 · cited 4× · see citing works
“Diabetes mellitus 1272 (2) 571 (3) 227 (2) 230 (3) 325 (1)”
InfluentialA comparison of subjective and objective measures of physical activity from the Newcastle 85+ study
Innerd, P., Catt, M., Collerton, J. C., Davies, K., Trenell, M. I., Kirkwood, T. B. L., & Jagger, C. (2015) · Age and Ageing · doi:10.1093/ageing/afv062 · Cited by 75 · cited 1× · see citing works
“25–<30 14 840 (24) 5124 (28) 2828 (25) 2313 (28) 4575 (21)”
Williams, P. (2013) · PLoS ONE · doi:10.1371/journal.pone.0078777 · Cited by 59 · cited 2× · see citing works
“25–<30 14 840 (24) 5124 (28) 2828 (25) 2313 (28) 4575 (21)”
Physical activity and stroke risk
Alevizos, A., Lentzas, J., Kokkoris, S., Mariolis, A. D., & Korantzopoulos, P. G. (2005) · International Journal of Clinical Practice · doi:10.1111/j.1742-1241.2005.00536.x · Cited by 52 · cited 1× · see citing works
“Below median 11 940 (19) 4306 (23) 2204 (19) 1762 (21) 3668 (17)”
España‐Romero, V., Golubić, R., Martin, K. R., Hardy, R., Ekelund, U., Kuh, D. J., Wareham, N. J., Cooper, R., Brage, S., & teams, O. B. O. T. N. S. A. D. C. (2014) · PLoS ONE · doi:10.1371/journal.pone.0087085 · Cited by 33 · cited 2× · see citing works
“25–<30 14 840 (24) 5124 (28) 2828 (25) 2313 (28) 4575 (21)”
Exercise and Health: Dose and Response, Considering Both Ends of the Curve
Simon, H. B. (2015) · The American Journal of Medicine · doi:10.1016/j.amjmed.2015.05.012 · Cited by 31 · cited 1× · see citing works
“Hypertension 11 092 (18) 4090 (22) 1936 (17) 1731 (20) 3335 (15)”
Patterns of Physical Activity Among Older Adults in New York City
Mooney, S. J., Joshi, S., Cerdá, M., Quinn, J. W., Beard, J., Kennedy, G. J., Benjamin, E. O., Ompad, D. C., & Rundle, A. (2015) · American Journal of Preventive Medicine · doi:10.1016/j.amepre.2015.02.015 · Cited by 29 · cited 1× · see citing works
“Former 17 667 (29) 4845 (26) 3163 (28) 2479 (29) 7180 (32)”
Thrift, A. G., Donnan, G. A., & McNeil, J. J. (2002) · Stroke · doi:10.1161/hs0202.102878 · Cited by 21 · see citing works
Cheung, Y. K., Yu, G., Wall, M. M., Sacco, R. L., Elkind, M. S. V., & Willey, J. Z. (2015) · Annals of Epidemiology · doi:10.1016/j.annepidem.2015.03.003 · Cited by 14 · see citing works
Self-citation
Flagged first, then by citations
1 of the 29 references couldn’t be matched to a known paper.
Cited by
Sorted by citations
Heart Disease and Stroke Statistics—2020 Update: A Report From the American Heart Association
Virani, S. S., Alonso, A., Benjamin, E. J., Bittencourt, M. S., Callaway, C. W., Carson, A. P., Chamberlain, A. M., Chang, A. R., Cheng, S., Delling, F. N., et al. (2020) · Circulation · doi:10.1161/cir.0000000000000757 · Cited by 9,175 · see citing works
Self-citationHeart Disease and Stroke Statistics—2023 Update: A Report From the American Heart Association
Tsao, C. W., Aday, A. W., Almarzooq, Z. I., Anderson, C. A. M., Arora, P., Avery, C. L., Baker-Smith, C. M., Beaton, A. Z., Boehme, A. K., Buxton, A. E., et al. (2023) · Circulation · doi:10.1161/cir.0000000000001123 · Cited by 8,300 · see citing works
Self-citationHeart Disease and Stroke Statistics—2022 Update: A Report From the American Heart Association
Tsao, C. W., Aday, A. W., Almarzooq, Z. I., Alonso, A., Beaton, A. Z., Bittencourt, M. S., Boehme, A. K., Buxton, A. E., Carson, A. P., Commodore-Mensah, Y., et al. (2022) · Circulation · doi:10.1161/cir.0000000000001052 · Cited by 5,987 · see citing works
Self-citationHeart Disease and Stroke Statistics—2021 Update: A Report From the American Heart Association
Virani, S. S., Alonso, A., Aparicio, H. J., Benjamin, E. J., Bittencourt, M. S., Callaway, C. W., Carson, A. P., Chamberlain, A. M., Cheng, S., Delling, F. N., et al. (2021) · Circulation · doi:10.1161/cir.0000000000000950 · Cited by 5,784 · see citing works
Self-citationHooker, S. P., Diaz, K. M., Blair, S. N., Colabianchi, N., Hutto, B., McDonnell, M. N., Vena, J. E., & Howard, V. J. (2022) · JAMA Network Open · doi:10.1001/jamanetworkopen.2022.15385 · Cited by 79 · see citing works
Kazemi, A., Soltani, S., Aune, D., Hosseini, E., Mokhtari, Z., Hassanzadeh, Z., Jayedi, A., Pitanga, F. J. G., & Akhlaghi, M. (2024) · International Journal of Behavioral Nutrition and Physical Activity · doi:10.1186/s12966-024-01593-8 · Cited by 83 · see citing works
Hall, C., Heck, J. E., Sandler, D. P., Ritz, B., Chen, H., & Krause, N. (2019) · Scandinavian Journal of Work, Environment & Health · doi:10.5271/sjweh.3787 · Cited by 65 · see citing works
Aggio, D., Papachristou, E., Papacosta, O., LENNON, L. T., Ash, S., Whincup, P. H., Wannamethee, S. G., & Jefferis, B. J. M. H. (2019) · Journal of Epidemiology & Community Health · doi:10.1136/jech-2019-212706 · Cited by 56 · see citing works
“47 Parallels can also be drawn between this finding and those of other observational studies that have shown that modest levels of PA may provide the greatest protection from stroke.”
Sex Differences in Physical Activity and Incident Stroke: A Systematic Review
Madsen, T. E., Samaei, M., Pikula, A., Yu, A. Y. X., Carcel, C., Millsaps, E., Yalamanchili, R. S., Bencie, N., Dula, A. N., Leppert, M., et al. (2022) · Clinical Therapeutics · doi:10.1016/j.clinthera.2022.02.006 · Cited by 27 · see citing works
Genetic correlations and causal inferences in ischemic stroke
Cai, H., Cai, B., Liu, Z., Wu, W., Chen, D., Fang, L., Chen, L., Sun, W., Liang, J., & Zhang, H. (2020) · Journal of Neurology · doi:10.1007/s00415-020-09786-4 · Cited by 25 · see citing works
“The protective effects for IS were driven by moderate level of physical activity [34], and excessive vigorous-intensity activities might not be favorable [35].”
BackgroundActive and sedentary bouts in people after stroke and healthy controls: An observational study
Hassett, L. M., Ada, L., Hellweg, S., Paul, S. S., Alzahrani, M. A., & Dean, C. M. (2020) · Physiotherapy Research International · doi:10.1002/pri.1845 · Cited by 16 · see citing works
Domain-Specific Physical Activity and Stroke in Sweden
Viktorisson, A., Palstam, A., Nyberg, F., Berg, C., Lissner, L., & Sunnerhagen, K. S. (2024) · JAMA Network Open · doi:10.1001/jamanetworkopen.2024.13453 · Cited by 14 · see citing works
Tran, T. P. T., Luu, N. M., Bui, T. T., Han, M., Lim, M. K., & Oh, J. (2023) · European Review of Aging and Physical Activity · doi:10.1186/s11556-023-00316-5 · Cited by 12 · see citing works
Cao, J., Eshak, E. S., Liu, K., Yang, J., Gerő, K., Liu, Z., & Yu, C. (2020) · Scientific Reports · doi:10.1038/s41598-020-63307-x · Cited by 11 · see citing works
Associations of financial inclusion with physical activity participation in later life
Gyasi, R. M., Frimpong, S., Lamptey, R. B., Amoako, G. K., Asiki, G., & Adam, A. M. (2022) · Heliyon · doi:10.1016/j.heliyon.2022.e09901 · Cited by 8 · see citing works
Liu, J., Liu, Y., Ma, W., Liu, J., Tong, Y., Wang, C., & Zheng, J. (2024) · Scientific Reports · doi:10.1038/s41598-024-57309-2 · Cited by 7 · see citing works
“However, The World Health Organization’s Global Status Report on Physical Activity 2022 estimates that 1.4 billion adults globally—or roughly 27.5% of the adult population—do not engage in enough physical activity, a statistic that has essentially stayed constant over time 15,16 .”
BackgroundInfluentialLi, X., Liu, S., Mu, X., Gao, H., Zi, Y., Yang, H., Zhang, X., He, M., & Yu, K. (2022) · Neurology · doi:10.1212/wnl.0000000000200555 · Cited by 6 · see citing works
Li, Y., Liu, M., Li, X., Jin, Y., Liu, Q., Zhou, W., Yu, J., Huang, T., & Wang, C. (2024) · Archives of Gerontology and Geriatrics · doi:10.1016/j.archger.2024.105651 · Cited by 5 · see citing works
Zhong, C., Voutsinas, J. M., Willey, J. Z., Lakshminarayan, K., Lacey, J. V., Chung, N. T., Woo, D., Elkind, M. S. V., & WANG, S. S. (2020) · Neuroepidemiology · doi:10.1159/000505970 · Cited by 5 · see citing works
Self-citationMcLaughlin, K. H., Mitchell, S. L., Archer, K. R., Master, H., Morshed, S., Gary, J. L., Jones, C. B., MacKenzie, E. J., & Reider, L. M. (2021) · Archives of Physical Medicine and Rehabilitation · doi:10.1016/j.apmr.2021.07.805 · Cited by 4 · see citing works
Stroke Epidemiology and Prevention
Boden-Albala, B. M., Appleton, N., & Schram, B. (2018) · Elsevier eBooks · doi:10.1016/b978-0-323-55381-0.00001-9 · Cited by 4 · see citing works
Yap, J. F., Moy, F. M., Ahmad, W. A. W., & Lim, Y. C. (2024) · PeerJ · doi:10.7717/peerj.16906 · Cited by 2 · see citing works
Dong, X.-F., Zhang, Q., Wei, J.-N., Zhou, Q.-Y., Yang, F., Liu, Y.-J., Li, Y.-S., & Sun, C.-Q. (2024) · Nature and Science of Sleep · doi:10.2147/nss.s482276 · Cited by 2 · see citing works
Liu, Y., Ya, X., Zhou, L., Chen, T., Shen, F., Chen, Y., & Wang, X. (2025) · Journal of Public Health · doi:10.1093/pubmed/fdaf043 · Cited by 1 · see citing works
Genitourinary and Sexual Health
Krapf, J. M., Nwabuebo, A., & Miller, L. (2021) · Springer eBooks · doi:10.1007/978-3-030-85484-3_11 · Cited by 1 · see citing works
Physical activity before and after stroke
Boysen, G. (2019) · Physiotherapy Research and Reports · doi:10.15761/prr.1000118
The effect of working conditions on cerebrovascular disease risk factors – a literature review
Dimitrova-Kirilova, V. M., Yankova, A. K., Dimitrova, D. R., Tsalta-Mladenov, M., & Nestorova, V. (2022) · Varna Medical Forum · doi:10.14748/vmf.v11i2.8572
Dong, X., Zhang, Q., Wei, J., Zhou, Q., Yangfan, J., Liu, Y., Li, Y., & Sun, C. (2024) · SSRN Electronic Journal · doi:10.2139/ssrn.4796043
Association of domain-specific physical activity with stroke: a population-based studyPreprint
Huang, X., Jiang, X., Lin, Q., Gao, W., Guo, X., Zheng, H., Pan, Z., Zheng, S., Ke, C., Hu, W., et al. (2025) · Research Square · doi:10.21203/rs.3.rs-6294514/v1
Correlation of domain-specific physical activity with stroke: a population-based studyPreprint
Huang, X., Jiang, X., Lin, Q., Pan, Z., Hu, W., & Zheng, F. (2025) · Research Square · doi:10.21203/rs.3.rs-7549863/v1
Tran, T. P. T., Luu, N. M., Bui, T. T., Han, M., Lim, M. K., & Oh, J.-K. (2023) · Figshare · doi:10.6084/m9.figshare.22626004
Bai, L., Zheng, P., Sun, X., Sun, Y., Guo, Z., Gao, J., & Liu, Z. (2026) · Scientific Reports · doi:10.1038/s41598-026-39428-0
“In addition to these traditional factors, the association between PA and stroke risk appears to be only partially explained by them 32 , suggesting additional mechanisms—potentially including neuroprotection or cerebrovascular regulation—that may directly influence stroke risk, such as reducing…”
Cerebrovascular disease in women
Yoon, C. W., & Bushnell, C. (2026) · Elsevier eBooks · doi:10.1016/b978-0-443-45863-7.00062-7
Su, J., Qin, Y., Chen, L., Wang, G., Yu, H., Fang, Y., Cui, L., Zhu, F., Tao, R., & Zhou, J. Y. (2026) · Chinese general practice journal. · doi:10.1016/j.cgpj.2026.100131
- Authors
- Willey, J. Z., Voutsinas, J., Sherzai, A., Ma, H., Bernstein, L., Elkind, M. S. V., Cheung, Y. K., & Wang, S. S.
- Affiliations
- Cedars-Sinai Medical Center (US)
- ORCID
- Venue
- Stroke
- Published
- 2017-09
- Volume
- 48
- Issue
- 9
- Pages
- 2346-2352
- ISSN
- 0039-2499 (ISSN-L)
- 1524-4628
- PMC
- PMC5575966
- OpenAlex
- W2743908248
- Cited by
- 34
- References
- 29
- Citations by year
- 2026: 3 · 2025: 3 · 2024: 7 · 2023: 3 · 2022: 6 · 2021: 3 · 2020: 5 · 2019: 2 · 2018: 2
- FWCI
- 1.82
- Type
- journal article
- Language
- en
- Open access
- green
- europepmc.org
- Locations
- Stroke (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Heart, Lung, and Blood Institute (R01HL111195)
- National Institute of Neurological Disorders and Stroke (K23NS073104)
- Topics
- Health Sciences › Medicine › Physiology › Physical Activity and Health
- Health Sciences › Medicine › Epidemiology › Acute Ischemic Stroke Management
- Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
- Keywords
- leisure-time physical activity, stroke risk, ischemic stroke, physical activity trajectories, moderate physical activity, women, California Teachers Study, incident stroke
- MeSH terms
- School Teachers, Adult, Aged, Aged, 80 and over, American Heart Association, California, Female, Follow-Up Studies, Humans, Leisure Activities, Middle Aged, Surveys and Questionnaires, Risk, United States, Exercise, Incidence, Multivariate Analysis, Proportional Hazards Models, Guideline Adherence, Stroke, Self Report
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