Validity and reliability of simple measurement device to asses the velocity of the barbell during squats

Lorenzetti, Silvio; Lamparter, Thomas; Lüthy, Fabian (2017). Validity and reliability of simple measurement device to asses the velocity of the barbell during squats BMC Research Notes, 10(1), p. 707. BioMed Central 10.1186/s13104-017-3012-z

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Objectives: The velocity of a barbell can provide important insights on the performance of athletes during strength training. The aim of this work was to assess the validity and reliably of four simple measurement devices that were compared to 3D motion capture measurements during squatting. Nine participants were assessed when performing 2 × 5 traditional squats with a weight of 70% of the 1 repetition maximum and ballistic squats with a weight of 25 kg. Simultaneously, data was recorded from three linear position transducers (T-FORCE, Tendo Power and GymAware), an accelerometer based system (Myotest) and a 3D motion capture system (Vicon) as the Gold Standard. Correlations between the simple measurement devices and 3D motion capture of the mean and the maximal velocity of the barbell, as well as the time to maximal velocity, were calculated. Results: The correlations during traditional squats were signifcant and very high (r = 0.932, 0.990, p < 0.01) and signifcant and moderate to high (r = 0.552, 0.860, p < 0.01). The Myotest could only be used during the ballistic squats and was less accurate. All the linear position transducers were able to assess squat performance, particularly during traditional squats and especially in terms of mean velocity and time to maximal velocity.

Item Type:	Journal Article (Original Article)
Division/Institute:	Swiss Federal Institute of Sports Magglingen SFISM > EHSM - Leistungssport > Sportphysiologie Kraft
Name:	Lorenzetti, Silvio; Lamparter, Thomas and Lüthy, Fabian
ISSN:	1756-0500
Publisher:	BioMed Central
Language:	English
Submitter:	Service Account
Date Deposited:	15 Dec 2020 16:21
Last Modified:	23 Sep 2021 02:17
Publisher DOI:	10.1186/s13104-017-3012-z
Related URLs:	Publication
PubMed ID:	29212552
Uncontrolled Keywords:	Training monitoring Linear position transducer (LPT) Strength exercise
ARBOR DOI:	10.24451/arbor.10968
URI:	https://arbor.bfh.ch/id/eprint/10968