Valid and Reliable Barbell Velocity Estimation Using an Inertial Measurement Unit

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Valid and Reliable Barbell Velocity Estimation Using an Inertial Measurement Unit. / Held, Steffen; Rappelt, Ludwig; Deutsch, Jan-Philip et al.

In: International Journal of Environmental Research and Public Health, Vol. 18, No. 17, 9170, 31.08.2021.

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@article{c2fd0157829241389c42e4d2f5740063,
title = "Valid and Reliable Barbell Velocity Estimation Using an Inertial Measurement Unit",
abstract = "The accurate assessment of the mean concentric barbell velocity (MCV) and its displacement are crucial aspects of resistance training. Therefore, the validity and reliability indicators of an easy-to-use inertial measurement unit (VmaxPro{\textregistered}) were examined. Nineteen trained males (23.1 ± 3.2 years, 1.78 ± 0.08 m, 75.8 ± 9.8 kg; Squat 1-Repetition maximum (1RM): 114.8 ± 24.5 kg) performed squats and hip thrusts (3-5 sets, 30 repetitions total, 75% 1RM) on two separate days. The MCV and displacement were simultaneously measured using VmaxPro{\textregistered} and a linear position transducer (Speed4Lift{\textregistered}). Good to excellent intraclass correlation coefficients (0.91 < ICC < 0.96) with a small systematic bias (p < 0.001; ηp2 < 0.50) for squats (0.01 ± 0.04 m·s-1) and hip thrusts (0.01 ± 0.05 m·s-1) and a low limit of agreement (LoA < 0.12 m·s-1) indicated an acceptable validity. The within- and between-day reliability of the MCV revealed good ICCs (0.55 < ICC < 0.91) and a low LoA (<0.16 m·s-1). Although the displacement revealed a systematic bias during squats (p < 0.001; ηp2 < 0.10; 3.4 ± 3.4 cm), no bias was detectable during hip thrusts (p = 0.784; ηp2 < 0.001; 0.3 ± 3.3 cm). The displacement showed moderate to good ICCs (0.43 to 0.95) but a high LoA (7.8 to 10.7 cm) for the validity and (within- and between-day) reliability of squats and hip thrusts. The VmaxPro{\textregistered} is considered to be a valid and reliable tool for the MCV assessment.",
author = "Steffen Held and Ludwig Rappelt and Jan-Philip Deutsch and Lars Donath",
year = "2021",
month = aug,
day = "31",
doi = "10.3390/ijerph18179170",
language = "English",
volume = "18",
journal = "International Journal of Environmental Research and Public Health",
issn = "1660-4601",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "17",

}

RIS

TY - JOUR

T1 - Valid and Reliable Barbell Velocity Estimation Using an Inertial Measurement Unit

AU - Held, Steffen

AU - Rappelt, Ludwig

AU - Deutsch, Jan-Philip

AU - Donath, Lars

PY - 2021/8/31

Y1 - 2021/8/31

N2 - The accurate assessment of the mean concentric barbell velocity (MCV) and its displacement are crucial aspects of resistance training. Therefore, the validity and reliability indicators of an easy-to-use inertial measurement unit (VmaxPro®) were examined. Nineteen trained males (23.1 ± 3.2 years, 1.78 ± 0.08 m, 75.8 ± 9.8 kg; Squat 1-Repetition maximum (1RM): 114.8 ± 24.5 kg) performed squats and hip thrusts (3-5 sets, 30 repetitions total, 75% 1RM) on two separate days. The MCV and displacement were simultaneously measured using VmaxPro® and a linear position transducer (Speed4Lift®). Good to excellent intraclass correlation coefficients (0.91 < ICC < 0.96) with a small systematic bias (p < 0.001; ηp2 < 0.50) for squats (0.01 ± 0.04 m·s-1) and hip thrusts (0.01 ± 0.05 m·s-1) and a low limit of agreement (LoA < 0.12 m·s-1) indicated an acceptable validity. The within- and between-day reliability of the MCV revealed good ICCs (0.55 < ICC < 0.91) and a low LoA (<0.16 m·s-1). Although the displacement revealed a systematic bias during squats (p < 0.001; ηp2 < 0.10; 3.4 ± 3.4 cm), no bias was detectable during hip thrusts (p = 0.784; ηp2 < 0.001; 0.3 ± 3.3 cm). The displacement showed moderate to good ICCs (0.43 to 0.95) but a high LoA (7.8 to 10.7 cm) for the validity and (within- and between-day) reliability of squats and hip thrusts. The VmaxPro® is considered to be a valid and reliable tool for the MCV assessment.

AB - The accurate assessment of the mean concentric barbell velocity (MCV) and its displacement are crucial aspects of resistance training. Therefore, the validity and reliability indicators of an easy-to-use inertial measurement unit (VmaxPro®) were examined. Nineteen trained males (23.1 ± 3.2 years, 1.78 ± 0.08 m, 75.8 ± 9.8 kg; Squat 1-Repetition maximum (1RM): 114.8 ± 24.5 kg) performed squats and hip thrusts (3-5 sets, 30 repetitions total, 75% 1RM) on two separate days. The MCV and displacement were simultaneously measured using VmaxPro® and a linear position transducer (Speed4Lift®). Good to excellent intraclass correlation coefficients (0.91 < ICC < 0.96) with a small systematic bias (p < 0.001; ηp2 < 0.50) for squats (0.01 ± 0.04 m·s-1) and hip thrusts (0.01 ± 0.05 m·s-1) and a low limit of agreement (LoA < 0.12 m·s-1) indicated an acceptable validity. The within- and between-day reliability of the MCV revealed good ICCs (0.55 < ICC < 0.91) and a low LoA (<0.16 m·s-1). Although the displacement revealed a systematic bias during squats (p < 0.001; ηp2 < 0.10; 3.4 ± 3.4 cm), no bias was detectable during hip thrusts (p = 0.784; ηp2 < 0.001; 0.3 ± 3.3 cm). The displacement showed moderate to good ICCs (0.43 to 0.95) but a high LoA (7.8 to 10.7 cm) for the validity and (within- and between-day) reliability of squats and hip thrusts. The VmaxPro® is considered to be a valid and reliable tool for the MCV assessment.

UR - https://www.mendeley.com/catalogue/d3e7c808-d67b-31ea-a5ab-f5e0b011ee47/

U2 - 10.3390/ijerph18179170

DO - 10.3390/ijerph18179170

M3 - Journal articles

C2 - 34501761

VL - 18

JO - International Journal of Environmental Research and Public Health

JF - International Journal of Environmental Research and Public Health

SN - 1660-4601

IS - 17

M1 - 9170

ER -

ID: 6205183