Related Experiment Video
Updated: Feb 1, 2026
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Assessment of Physical Activity Intensity with Accelerometers and Oxygen Consumption
Published on: June 20, 2025
589
A pilot study: The association between physical activity level using by accelerometer and postoperative complications
Hiroya Iida1, Tomoharu Shimizu1, Hiromitsu Maehira1
1Department of Surgery, Shiga University of Medical Science, Otsu, Shiga 520-2192, Japan.
Experimental and Therapeutic Medicine
|December 14, 2018
Summary
Accelerometers can track physical activity after hepatic resection. Lower activity levels and delayed recovery patterns, identified by accelerometers, may indicate postoperative complications in patients.
Area of Science:
- Surgical outcomes
- Medical device technology
- Patient monitoring
Background:
- Wearable accelerometers are increasingly accessible for public use.
- Assessing postoperative recovery and complications is crucial for patient management.
Purpose of the Study:
- To investigate the utility of accelerometers in evaluating postoperative outcomes in patients undergoing hepatic resection.
- To determine the association between physical activity patterns and the occurrence of postoperative complications.
Main Methods:
- 12 patients undergoing hepatic resection were monitored using accelerometers from postoperative day (POD) 1 to POD 7.
- Activity level patterns were analyzed and categorized (Increase, Bell Curve, Flat type).
- Correlation between activity patterns and the incidence of postoperative complications was assessed.
Main Results:
- 6 out of 12 patients experienced postoperative complications.
- Patients with complications showed significantly lower activity levels from POD 1 and after POD 6 compared to those without.
- An 'Increase type' activity pattern was associated with uncomplicated recovery, while 'Bell Curve' and 'Flat type' patterns indicated delayed recovery and were linked to complications.
Conclusions:
- Physical activity patterns measured by accelerometers may serve as a surrogate marker for postoperative complications after hepatic resection.
- Further research with larger sample sizes is warranted to validate these findings.
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