Validity of sports watches when estimating energy expenditure during running
| Autor: | Nadja Beeler, Thomas Wyss, Wolfgang Taube, Lilian Roos |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Monitoring training
Physical Therapy Sports Therapy and Rehabilitation High-intensity 03 medical and health sciences 0302 clinical medicine Validation Statistics Medicine Orthopedics and Sports Medicine lcsh:Sports medicine Maximal accumulated oxygen deficit Trained subjects Wearables business.industry High intensity Rehabilitation 030229 sport sciences Mean absolute percentage error Energy expenditure lcsh:RC1200-1245 business human activities Anaerobic exercise 030217 neurology & neurosurgery Research Article |
| Zdroj: | BMC Sports Science, Medicine and Rehabilitation BMC Sports Science, Medicine and Rehabilitation, Vol 9, Iss 1, Pp 1-8 (2017) BMC Sports Science, Medicine and Rehabilitation, 9 (1) |
| ISSN: | 2052-1847 |
| DOI: | 10.1186/s13102-017-0089-6 |
| Popis: | Background The aim of this study was to assess the accuracy of three different sport watches in estimating energy expenditure during aerobic and anaerobic running. Methods Twenty trained subjects ran at different intensities while wearing three commercial sport watches (Suunto Ambit2, Garmin Forerunner920XT, and Polar V800). Indirect calorimetry was used as the criterion measure for assessing energy expenditure. Different formulas were applied to compute energy expenditure from the gas exchange values for aerobic and anaerobic running. Results The accuracy of the energy expenditure estimations was intensity-dependent for all tested watches. During aerobic running (4–11 km/h), mean absolute percentage error values of −25.16% to +38.09% were observed, with the Polar V800 performing most accurately (stage 1: −12.20%, stage 2: −3.61%, and stage 3: −4.29%). The Garmin Forerunner920XT significantly underestimated energy expenditure during the slowest stage (stage 1: −25.16%), whereas, the Suunto Ambit2 significantly overestimated energy expenditure during the two slowest stages (stage 1: 38.09%, stage 2: 36.29%). During anaerobic running (14–17 km/h), all three watches significantly underestimated energy expenditure by −21.62% to −49.30%. Therefore, the error in estimating energy expenditure systematically increased as the anaerobic running speed increased. Conclusions To estimate energy expenditure during aerobic running, the Polar V800 is recommended. By contrast, the other two watches either significantly overestimated or underestimated energy expenditure during most running intensities. The energy expenditure estimations generated during anaerobic exercises revealed large measurement errors in all tested sport watches. Therefore, the algorithms for estimating energy expenditure during intense activities must be improved before they can be used to monitor energy expenditure during high-intensity physical activities. BMC Sports Science, Medicine and Rehabilitation, 9 (1) ISSN:2052-1847 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink