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Título
Validity of the iLOAD® app for resistance training monitoring
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
PeerJ
Cita Bibliográfica
De Sá, E. C.; Ricarte Medeiros, A.; Santana Ferreira, A.; García Ramos, A.; Janicijevic, D.; Boullosa Álvarez, D. A. (2019). Validity of the iLOAD® app for resistance training monitoring. PeerJ, 7
Editorial
PeerJ
Fecha
2019
Resumen
[EN] Background. This study aimed (I) to assess the inter-rater agreement for measuring
the mean velocity (MV) of the barbell with the iLOAD R© app, and (II) to compare the
magnitude of the MV and total work of a training session between the iLOAD R© app
and a linear encoder (reference method).
Method. Sixteen young healthy individuals (four women and 12 men) were tested in
two sessions separated by 48 h. The 10 repetition maximum (RM) load was determined
in the first testing session in the half squat exercise. The second testing session consisted
of 3 sets of 10 repetitions during the half squat exercise performed against the 10RM
load. Both the iLOAD R© app and a linear encoder were used to calculate the MV
and total work of each training set. MV was recorded with the iLOAD R© app by two
independent researchers to evaluate the inter-rater agreement.
Results. Trivial differences and nearly perfect correlations were observed between raters
for the MV values collected under individual sets (effect size [ES] ≤ 0.02, r ≥ 0.987), as
well as for the whole training session (ES = 0.01, r = 0.997). Trivial-small differences
and nearly perfect correlations were observed between the iLOAD R© app and the linear
encoder (Chronojump, Barcelona, Spain) for MV (EV ≤ 0.25, r ≥ 0.903) and total work
(ES ≤ 0.05, r ≥ 0.973). Bland-Altman plots did not reveal heteroscedasticity of the
errors between the iLOAD R© app and the linear encoder for MV (r2 = 0.010) and total
work (r2 < 0.001).
Conclusions. iLOAD R© is a valid smartphone app which can provide real-time feedback
of the MV and total work completed in a set of multiple repetitions in the half squat
exercise.
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