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An Intelligent Cardiopulmonary Training System and Adherence to Training Intensity: A Feasibility Study

Author

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  • Li Wei

    (Taipei Neuroscience Institute, Taipei Medical University, Taipei 110, Taiwan
    Division of Neurosurgery, Department of Surgery, Wan Fang Hospital, Taipei Medical University, Taipei 110, Taiwan
    Graduate Institute of Injury Prevention and Control, Taipei Medical University, Taipei 110, Taiwan)

  • Ju-Yang Chi

    (Department of Physical Medicine and Rehabilitation, Wan Fang Hospital, Taipei Medical University, Taipei 110, Taiwan)

  • Jane C.-J. Chao

    (School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 110, Taiwan
    Master Program in Global Health and Development, College of Public Health, Taipei Medical University, Taipei 110, Taiwan
    Nutrition Research Center, Taipei Medical University Hospital, Taipei Medical University, Taipei 110, Taiwan)

  • Yen-Nung Lin

    (Graduate Institute of Injury Prevention and Control, Taipei Medical University, Taipei 110, Taiwan
    Department of Physical Medicine and Rehabilitation, Wan Fang Hospital, Taipei Medical University, Taipei 110, Taiwan)

Abstract

Objective: Our aim was to evaluate the feasibility of our developed intelligent cardiopulmonary training system (ICTS) and of the percentage of time spent within the target HR range (%time) as an indicator of adherence to training intensity. Methods: In this noncontrolled trial, nine participants with sedentary lifestyles were recruited from the outpatient rehabilitation department of a teaching hospital. All participants received twelve 30 min sessions of cycling ergometer exercises (5 min warm up, 20 min training phase, and 5 min cool down) with the ICTS three times per week. Training intensity was determined at 60–80% heart rate reserve using cardiopulmonary exercise (CPET) pretests. During training, pedaling resistance was automatically adjusted by the ICTS to keep the user’s heart rate at the predetermined intensity range. Workload -peak and peak oxygen uptake (VO 2-peak ) were measured during the pretests and post-tests. We recorded the percentage of time spent within the target heart rate range (%time) during the 20 min training phase for each training session as an indicator of adherence. The correlation between %time and gains in VO 2-peak was assessed. Results: After 4 weeks of training on the ICTS, workload -peak and VO 2-peak significantly improved by 13.6 ± 7.2 w (mean ± SD, p = 0.008) and 1.5 ± 1.1 mL/kg/min ( p = 0.011), respectively. The 12-session average %time ranged from 10.6% to 93.1% among the participants, and five participants achieved an average %time >80%. A positive correlation between average %time and training efficacy was found ( rs = 0.85, p = 0.004). Conclusions: Cardiopulmonary training with an ICTS is feasible, and the percentage of time spent within the target heart rate range seems to be a reasonable indicator for monitoring training-intensity adherence.

Suggested Citation

  • Li Wei & Ju-Yang Chi & Jane C.-J. Chao & Yen-Nung Lin, 2022. "An Intelligent Cardiopulmonary Training System and Adherence to Training Intensity: A Feasibility Study," IJERPH, MDPI, vol. 19(14), pages 1-9, July.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:14:p:8335-:d:858085
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    References listed on IDEAS

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    1. Andrew P Bacon & Rickey E Carter & Eric A Ogle & Michael J Joyner, 2013. "VO2max Trainability and High Intensity Interval Training in Humans: A Meta-Analysis," PLOS ONE, Public Library of Science, vol. 8(9), pages 1-7, September.
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