Related Experiment Video
Updated: Feb 15, 2026

Assessment of Physical Activity Intensity with Accelerometers and Oxygen Consumption
Published on: June 20, 2025
Effect of accelerometer-based feedback on physical activity in hospitalized patients with ischemic stroke: a
Masashi Kanai1,2, Kazuhiro P Izawa2, Miki Kobayashi1
11 Department of Rehabilitation, Itami Kousei Neurosurgical Hospital, Itami, Japan.
Objective:
To evaluate the effect of accelerometer-based feedback on physical activity in hospitalized patients with ischemic stroke.
Design:
Randomized controlled trial.
Setting:
Acute care hospital.
Subjects:
A total of 55 patients with ischemic stroke who could walk without assistance were randomly assigned to the intervention group ( n = 27) or the control group ( n = 28).
Interventions:
At the baseline measurement, patients did not receive accelerometer-based feedback. At follow-up, a physical therapist provided instruction on accelerometer-based feedback, discussed physical activity targets and encouraged the patients to walk more until discharge.
Main Measures:
The average daily number of steps taken was used as the index of daily hospitalized physical activity.
Results:
The study sample consisted of 48 patients, of whom 23 patients comprised the intervention group and 25 patients comprised the control group. Although there were no significant differences in physical activity values between the two groups at the baseline measurement, the values in the intervention group at follow-up were significantly higher than those in the control group (5180.5 ± 2314.9 vs. 3113.6 ± 1150.9 steps/day, P = 0.0003). The effect size of physical activity values (Cohen's d = 1.15) at follow-up was large between the two groups.
Conclusion:
Exercise training combined with accelerometer-based feedback effectively increased physical activity in hospitalized patients with ischemic stroke.
Related Concept Videos
Feedback control systems
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
Hospitals-II
Nurses that work in...
Hospitals-I
Feedback Inhibition
Physical Methods for Controlling Microbial Growth: Temperature
Feedback Loops

