My physical activity was off the charts and still had a stroke.
3 years post stroke at a physical I had a
resting heart rate of 54 at age 53, level of an athlete. My doctor asked
what exercises I was doing, 'I've done no exercises for the past 3
years'.
My cardiorespiratory fitness has probably dropped a bit in the past 16 years with little to keep me in shape but walking 8-10,000 steps a day.
Changes in Physical Activity and Risk of Ischemic Stroke: The ARIC Study
Abstract
Background:
Limited data exist regarding the impact of changes in physical activity (PA) over time on ischemic stroke risk. Exploring this understudied area could help improve stroke prevention strategies and promote PA during the lifespan.
Methods:
We evaluated 11,089 ARIC participants recruited in 1987-9 who completed visit 3 (1993-1995). We classified PA as meeting recommendations, not meeting recommendations, or no PA. Categories of increased, decreased, stable high, and stable low PA and a continuous PA variable were also evaluated. Crude and adjusted Cox regression models were used to characterize the association of 6-year changes in PA and ischemic stroke risk.
Results:
Participants had a mean age of 60 years. During a median of 21 years, 762 ischemic stroke events occurred. Compared to the participants with recommended PA at both visits, those with no PA had 46% higher hazards of ischemic stroke [HR=1.46, (95%: 1.17, 1.82)], and those with recommended PA at visit 1 and no PA at visit 3 also had 37% higher hazards [HR=1.37, (95%: 1.02, 1.83)]. Participants who increased their PA from visit 1 to visit 3 had 23% lower hazard than those with stable low PA at both visits [HR =0.77, (95%: 0.63, 0.94)], while those who decreased their PA had 25% higher hazards compared to those with stable high PA at both visits [HR =1.25, (95%: 1.01, 1.54)].
Conclusions:
Physical inactivity during midlife increases ischemic stroke risk, while meeting PA recommendations reduces it.
Data access statement: The data can be accessed from the National Heart, Lung, and Blood Institute’s ARIC website.
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