Abstract
Objective: To investigate test-retest reliability and responsiveness of Equivital Lifemonitor and photoplethysmography based wristwatch tools to assess cardiorespiratory and thermoregulatory parameters during a simulated construction task. Methods: Ten healthy individuals (Mean age, 31.8 ± 1.8 Y) participated in this pilot study. Participants were asked to perform a 30 minutes of simulated fatigue task in an experimental setup. The cardiorespiratory and thermoregulatory measures (e.g., heart rate, heart rate variability, respiratory rate, skin temperature, electrodermal activity) were measured at baseline and after 30 minutes of fatigue task. An intraclass correlation coefficient (ICC2,1) was used to evaluate test-retest reliability of each tool to assess cardiorespiratory and thermoregulatory measures. In addition, the responsiveness of each tool to measure changes from baseline to posttest was calculated using the standardized response mean. Results: The Equivital Lifemonitor has shown good to excellent test-retest reliability for the assessment of heart rate (ICC, 0.97), heart rate variability (ICC, 0.86), respiratory rate (ICC, 0.77), and local skin temperature (ICC, 0.76). However, photoplethysmography based wristwatch has shown moderate to good test-retest reliability for the assessment of heart rate (ICC, 0.71), heart rate variability (ICC, 0.73), electrodermal activity (ICC, 0.80), and local skin temperature (ICC, 0.72). A large standardized response mean (>0.8) indicates that both tools are able to capture the changes in heart rate, heart rate variability, respiratory rate, skin temperature, and electrodermal activity after 30 minutes of fatigue task. Conclusions: The Equivital Lifemonitor and photoplethysmography based wristwatch devices are reliable to measure cardiorespiratory and thermoregulatory parameters during the fatigue task. Additionally, both devices are able to capture the fatigue response after a simulated construction task. Future field studies in a larger sample should investigate the sensitivity and validity of these tools to measure cardiorespiratory and thermoregulatory parameters for fatigue assessment in construction sites.
| Original language | English |
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| Publication status | Published - 8 Dec 2020 |
| Event | The 8th International Conference on Construction Engineering and Project Management - Hong Kong Duration: 6 Dec 2020 → 8 Dec 2020 |
Conference
| Conference | The 8th International Conference on Construction Engineering and Project Management |
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| City | Hong Kong |
| Period | 6/12/20 → 8/12/20 |
Keywords
- Reliability, heart rate, heart rate variability, skin temperature, construction workers