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Validity and Reliability of a Wearable Inertial Sensor to Measure Velocity and Power in the Back Squat and Bench Press.
J Strength Cond Res. 2019 Sep; 33(9):2398-2408.JS

Abstract

Orange, ST, Metcalfe, JW, Liefeith, A, Marshall, P, Madden, LA, Fewster, CR, and Vince, RV. Validity and reliability of a wearable inertial sensor to measure velocity and power in the back squat and bench press. J Strength Cond Res 33(9): 2398-2408, 2019-This study examined the validity and reliability of a wearable inertial sensor to measure velocity and power in the free-weight back squat and bench press. Twenty-nine youth rugby league players (18 ± 1 years) completed 2 test-retest sessions for the back squat followed by 2 test-retest sessions for the bench press. Repetitions were performed at 20, 40, 60, 80, and 90% of 1 repetition maximum (1RM) with mean velocity, peak velocity, mean power (MP), and peak power (PP) simultaneously measured using an inertial sensor (PUSH) and a linear position transducer (GymAware PowerTool). The PUSH demonstrated good validity (Pearson's product-moment correlation coefficient [r]) and reliability (intraclass correlation coefficient [ICC]) only for measurements of MP (r = 0.91; ICC = 0.83) and PP (r = 0.90; ICC = 0.80) at 20% of 1RM in the back squat. However, it may be more appropriate for athletes to jump off the ground with this load to optimize power output. Further research should therefore evaluate the usability of inertial sensors in the jump squat exercise. In the bench press, good validity and reliability were evident only for the measurement of MP at 40% of 1RM (r = 0.89; ICC = 0.83). The PUSH was unable to provide a valid and reliable estimate of any other criterion variable in either exercise. Practitioners must be cognizant of the measurement error when using inertial sensor technology to quantify velocity and power during resistance training, particularly with loads other than 20% of 1RM in the back squat and 40% of 1RM in the bench press.

Authors+Show Affiliations

Sport, Health and Exercise Science, School of Life Sciences, University of Hull, Hull, United Kingdom. School of Sport, York St John University, York, United Kingdom.Sport, Health and Exercise Science, School of Life Sciences, University of Hull, Hull, United Kingdom. School of Sport, York St John University, York, United Kingdom.School of Sport, York St John University, York, United Kingdom.Sport, Health and Exercise Science, School of Life Sciences, University of Hull, Hull, United Kingdom.Center of Biomedical Research, School of Life Sciences, University of Hull, Hull, United Kingdom.Carnegie School of Sport, Leeds Beckett University, Leeds, United Kingdom.Sport, Health and Exercise Science, School of Life Sciences, University of Hull, Hull, United Kingdom.

Pub Type(s)

Journal Article
Validation Study

Language

eng

PubMed ID

29742745

Citation

Orange, Samuel T., et al. "Validity and Reliability of a Wearable Inertial Sensor to Measure Velocity and Power in the Back Squat and Bench Press." Journal of Strength and Conditioning Research, vol. 33, no. 9, 2019, pp. 2398-2408.
Orange ST, Metcalfe JW, Liefeith A, et al. Validity and Reliability of a Wearable Inertial Sensor to Measure Velocity and Power in the Back Squat and Bench Press. J Strength Cond Res. 2019;33(9):2398-2408.
Orange, S. T., Metcalfe, J. W., Liefeith, A., Marshall, P., Madden, L. A., Fewster, C. R., & Vince, R. V. (2019). Validity and Reliability of a Wearable Inertial Sensor to Measure Velocity and Power in the Back Squat and Bench Press. Journal of Strength and Conditioning Research, 33(9), 2398-2408. https://doi.org/10.1519/JSC.0000000000002574
Orange ST, et al. Validity and Reliability of a Wearable Inertial Sensor to Measure Velocity and Power in the Back Squat and Bench Press. J Strength Cond Res. 2019;33(9):2398-2408. PubMed PMID: 29742745.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Validity and Reliability of a Wearable Inertial Sensor to Measure Velocity and Power in the Back Squat and Bench Press. AU - Orange,Samuel T, AU - Metcalfe,James W, AU - Liefeith,Andreas, AU - Marshall,Phil, AU - Madden,Leigh A, AU - Fewster,Connor R, AU - Vince,Rebecca V, PY - 2018/5/10/pubmed PY - 2019/12/18/medline PY - 2018/5/10/entrez SP - 2398 EP - 2408 JF - Journal of strength and conditioning research JO - J Strength Cond Res VL - 33 IS - 9 N2 - Orange, ST, Metcalfe, JW, Liefeith, A, Marshall, P, Madden, LA, Fewster, CR, and Vince, RV. Validity and reliability of a wearable inertial sensor to measure velocity and power in the back squat and bench press. J Strength Cond Res 33(9): 2398-2408, 2019-This study examined the validity and reliability of a wearable inertial sensor to measure velocity and power in the free-weight back squat and bench press. Twenty-nine youth rugby league players (18 ± 1 years) completed 2 test-retest sessions for the back squat followed by 2 test-retest sessions for the bench press. Repetitions were performed at 20, 40, 60, 80, and 90% of 1 repetition maximum (1RM) with mean velocity, peak velocity, mean power (MP), and peak power (PP) simultaneously measured using an inertial sensor (PUSH) and a linear position transducer (GymAware PowerTool). The PUSH demonstrated good validity (Pearson's product-moment correlation coefficient [r]) and reliability (intraclass correlation coefficient [ICC]) only for measurements of MP (r = 0.91; ICC = 0.83) and PP (r = 0.90; ICC = 0.80) at 20% of 1RM in the back squat. However, it may be more appropriate for athletes to jump off the ground with this load to optimize power output. Further research should therefore evaluate the usability of inertial sensors in the jump squat exercise. In the bench press, good validity and reliability were evident only for the measurement of MP at 40% of 1RM (r = 0.89; ICC = 0.83). The PUSH was unable to provide a valid and reliable estimate of any other criterion variable in either exercise. Practitioners must be cognizant of the measurement error when using inertial sensor technology to quantify velocity and power during resistance training, particularly with loads other than 20% of 1RM in the back squat and 40% of 1RM in the bench press. SN - 1533-4287 UR - https://www.unboundmedicine.com/medline/citation/29742745/Validity_and_Reliability_of_a_Wearable_Inertial_Sensor_to_Measure_Velocity_and_Power_in_the_Back_Squat_and_Bench_Press_ L2 - https://doi.org/10.1519/JSC.0000000000002574 DB - PRIME DP - Unbound Medicine ER -