Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2021) 20, 149 - 157   DOI: https://doi.org/10.52082/jssm.2021.149

Research article
Reliability and Validity of the Polar V800 Sports Watch for Estimating Vertical Jump Height
Manuel V. Garnacho-Castaño1, , Marcos Faundez-Zanuy2, Noemí Serra-Payá1, José L. Maté-Muñoz3, Josep López-Xarbau2, Moisés Vila-Blanch4
Author Information
1 GRI-AFIRS, School of Health Sciences, Pompeu Fabra University, Barcelona, Spain
2 Polytechnic School Pompeu Fabra University, Barcelona, Spain
3 Department of Physical Activity and Sports Science, Alfonso X El Sabio University, Madrid, Spain
4 Department of Physical Activity and Sports Science, Higher Education Centre Palma de Mallorca, Spain

Manuel V. Garnacho-Castaño
✉ TecnoCampus-Pompeu Fabra University Ernest Lluch, 32 (Porta Laietana), Mataró-Barcelona, 08302, Spain
Email: mgarnacho@escs.tecnocampus.cat
Publish Date
Received: 17-10-2020
Accepted: 03-01-2021
Published (online): 01-03-2021
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ABSTRACT

This study aimed to assess the reliability and validity of the Polar V800 to measure vertical jump height. Twenty-two physically active healthy men (age: 22.89 ± 4.23 years; body mass: 70.74 ± 8.04 kg; height: 1.74 ± 0.76 m) were recruited for the study. The reliability was evaluated by comparing measurements acquired by the Polar V800 in two identical testing sessions one week apart. Validity was assessed by comparing measurements simultaneously obtained using a force platform (gold standard), high-speed camera and the Polar V800 during squat jump (SJ) and countermovement jump (CMJ) tests. In the test-retest reliability, high intraclass correlation coefficients (ICCs) were observed (mean: 0.90, SJ and CMJ) in the Polar V800. There was no significant systematic bias ± random errors (p > 0.05) between test-retest. Low coefficients of variation (<5%) were detected in both jumps in the Polar V800. In the validity assessment, similar jump height was detected among devices (p > 0.05). There was almost perfect agreement between the Polar V800 compared to a force platform for the SJ and CMJ tests (Mean ICCs = 0.95; no systematic bias ± random errors in SJ mean: -0.38 ± 2.10 cm, p > 0.05). Mean ICC between the Polar V800 versus high-speed camera was 0.91 for the SJ and CMJ tests, however, a significant systematic bias ± random error (0.97 ± 2.60 cm; p = 0.01) was detected in CMJ test. The Polar V800 offers valid, compared to force platform, and reliable information about vertical jump height performance in physically active healthy young men.

Key words: Jumping ability, squat jump, countermovement jump, pulsometer, Bland Altman plot, intraclass correlation coefficient


           Key Points
  • The Polar V800 sports watch was shown to be a reliable and valid tool for measuring jumping ability.
  • The Polar V800 is a simple, multifunctional, inexpensive and practical device that offers adequate information about the vertical jump height performance in physically active healthy young men.
  • It would also be interesting to demonstrate the reliability and validity of the Polar V800 sports watch to assess vertical jump height in highly trained athletes or other populations.
 
 
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