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THE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS

Rivista di Medicina, Traumatologia e Psicologia dello Sport


Indexed/Abstracted in: Chemical Abstracts, CINAHL, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
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The Journal of Sports Medicine and Physical Fitness 2018 Mar 27

DOI: 10.23736/S0022-4707.18.08059-3

Copyright © 2018 EDIZIONI MINERVA MEDICA

lingua: Inglese

Validity and reliability of an inertial device (WIMU PROTM) to quantify physical activity level through steps measurement

Alejandro HERNÁNDEZ-BELMONTE 1, Alejandro BASTIDA-CASTILLO 1, Carlos D. GÓMEZ-CARMONA 1, 2 , José PINO-ORTEGA 1

1 BioVetMed & SportSci Research Group, University of Murcia, Murcia, Spain; 2 Training Optimization and Sport Performance Research Group (GOERD), University of Extremadura, Caceres, Spain


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BACKGROUND: Currently, there is an increase in the application of accelerometers to quantify physical activity level through daily steps, and therefore, it is required that the devices are valid and reliable. The current study tested (i) the validity of the WIMU PROTM inertial device in steps detection and (ii) the inter-device reliability for steps measurement.
METHODS: Ten endurance-trained men volunteered to participate in this study (height: 1.78 ± 0.05 m; body mass: 72.96 ± 4.2 kg). Twelve trials of 40.32 m at different speeds (four trials at each speed) were performed: (a) walking (<5 km/h), (b) jogging (5-10 km/h) and running (10-15 km/h). The video analysis was used as criterion to assess validity, while, two WIMU PROTM inertial devices were compared to assess between- unit reliability.
RESULTS: A near-perfect validity between video analysis and WIMU PROTM (ICC = 0.999; Bias = 0.03) and a very good reliability between WIMU PROTM devices (Bias = -0.01; CV = 0.02%) was found. The highest values were found at walking (ICC = 0.999) and the lowest values were found at running (ICC = 0.995).
CONCLUSIONS: WIMU PROTM is a reliable and valid device to quantify physical activity level through steps measurement.


KEY WORDS: Accelerometer - Health - Physical condition - Level of activity - Steps

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Publication History

Article first published online: March 27, 2018
Manuscript accepted: March 9, 2018
Manuscript revised: February 26, 2018
Manuscript received: August 15, 2017

Per citare questo articolo

Hernández-Belmonte A, Bastida-Castillo A, Gómez-Carmona CD, Pino-Ortega J. Validity and reliability of an inertial device (WIMU PROTM) to quantify physical activity level through steps measurement. J Sports Med Phys Fitness 2018 Mar 27. DOI: 10.23736/S0022-4707.18.08059-3

Corresponding author e-mail

cgomezcu@alumnos.unex.es