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Related Concept Videos

Exercise and Cardiac Output01:17

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Regular physical activity is essential for maintaining cardiovascular health, with aerobic exercises being particularly effective. According to the American Heart Association, 150 minutes of moderate to intense aerobic exercise per week is recommended for a healthy heart. Aerobic activities may include brisk walking, running, bicycling, cross-country skiing, and swimming, ideally performed three to five times per week.
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Cardiac Output and Stroke Volume01:11

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Cardiac output (CO) is an integral aspect of human physiology, reflecting the heart's efficiency and responsiveness to the body's needs. It represents the volume of blood that the left or right ventricle ejects into the aorta or pulmonary trunk each minute. The CO is calculated by multiplying the heart rate (HR)—the number of heartbeats per minute—by the stroke volume (SV)—the amount of blood pumped out with each heartbeat.
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Relationships between sleep efficiency and physical activity after stroke: a cross-sectional study.

Takuto Oikawa1, Yoshino Terui2, Motoki Maruyama1,3

  • 1Department of Rehabilitation, Akita Cerebrospinal and Cardiovascular Center, Akita, Japan.

Topics in Stroke Rehabilitation
|March 30, 2026
PubMed
Summary

Stroke patients with better sleep efficiency spent less time in sedentary behavior and more time in moderate to vigorous physical activity. Improving sleep efficiency may help reduce sedentary time and increase physical activity during rehabilitation.

Keywords:
Strokephysical activityrehabilitationsleepwearable device

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Area of Science:

  • Neurology
  • Rehabilitation Medicine
  • Sleep Science

Background:

  • Stroke survivors often experience reduced daytime physical activity (PA) and poor sleep quality.
  • The relationship between sleep and PA in stroke patients needs further investigation using objective measures.

Purpose of the Study:

  • To investigate the association between physical activity and sleep quality in stroke patients during convalescent rehabilitation.

Main Methods:

  • A cross-sectional study involving 76 stroke patients.
  • Objective measurement of physical activity (sedentary behavior, light, and moderate-to-vigorous activity) and sleep efficiency using wearable devices.
  • Correlation and multiple regression analyses to examine associations between sleep efficiency and physical activity parameters.

Main Results:

  • Sleep efficiency was positively correlated with moderate to vigorous physical activity (MVPA).
  • Higher sleep efficiency was associated with less sedentary behavior (SB) and more MVPA.
  • The median sleep efficiency was 85.3%.

Conclusions:

  • Sleep efficiency is associated with both sedentary behavior and MVPA in stroke patients during rehabilitation.
  • Interventions aimed at improving sleep efficiency could potentially reduce sedentary time and increase physical activity in this population.