After screening 2,936 studies, 8 cohort studies were included in the meta-analysis. For the NIHSS score on admission, there were 4 studies with 6,532 stroke patients (5547 ischemic, 488 hemorrhagic, 497 others), 689 in the pre-stroke physical activity group and 5,843 in the physically inactive group showing a mean difference of -0.65 (95% CI: -1.16 to -0.16; I² = 38.3%) between the two groups, which was quite significant.
For mRS outcome at 3 months post stroke, there were four studies with 40,657 stroke cases (33,395 ischemic, 6979 hemorrhagic, 283 others). Among them, 19,908 were in the physical activity group and 20,749 in the physically inactive group. The mRS outcomes did not differ significantly between the two groups (OR = 5.05, 95% CI: 0.71 to 35.68; I² = 93.5%).
Qualitative analysis showed moderate activity (2–3 hours/week) was more beneficial than light activity (4-hour weekly walks) in enhancing cognition and quality of life 3 months post-stroke.