Validity of the iLOAD ® app for resistance training monitoring

PeerJ

article

Evandro Claudino de Sá¹  André Ricarte Medeiros¹  André Santana Ferreira¹  Amador García Ramos³  Danica Janicijevic⁵  Daniel Boullosa¹ 

[1] iLOAD Solutions;Catholic University of Brasilia;Department of Sports Sciences and Physical Conditioning, Faculty of Education, Universidad Católica de la Santísima Concepción;Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada;Faculty of sport and physical education, The Research Centre, University of Belgrade;College of Healthcare Sciences, James Cook University;Faculty of Healthcare Sciences, University of Brasilia

关键词: Smartphone application;    Squat;    Total work;    Velocity-based training;   

DOI  :  10.7717/peerj.7372

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

BackgroundThis study aimed (I) to assess the inter-rater agreement for measuring the mean velocity (MV) of the barbell with the iLOAD® app, and (II) to compare the magnitude of the MV and total work of a training session between the iLOAD® app and a linear encoder (reference method).MethodSixteen 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® app and a linear encoder were used to calculate the MV and total work of each training set. MV was recorded with the iLOAD® app by two independent researchers to evaluate the inter-rater agreement.ResultsTrivial 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® 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® app and the linear encoder for MV (r2 = 0.010) and total work (r2 < 0.001).ConclusionsiLOAD® 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.

【 授权许可】

CC BY