Validity and reliability of simple measurement device to assess the velocity of the barbell during squats
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Date
2017-12-06Type
- Journal Article
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yes
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Abstract
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 significant and very high (r = 0.932, 0.990, p < 0.01) and significant 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. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000219160Publication status
publishedExternal links
Journal / series
BMC Research NotesVolume
Pages / Article No.
Publisher
BioMed CentralSubject
Training monitoring; Strength exercises; Linear position transducer (LPT)Organisational unit
03994 - Taylor, William R. / Taylor, William R.
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ETH Bibliography
yes
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