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

BMC Research Notes

Table 2 Differences, RMSE and correlations of the velocities of the bar Vmean, Vmax and t Vmax during ballistic squats

	T-force	Tendo	GymAware	Myotest
Δ Vmean
Minimum	− 0.265	− 0.521	− 0.460	− 0.739
Maximum	0.433	0.256	0.220	0.527
Average	0.102	− 0.083	− 0.091	0.149
RMSE	0.167	0.157	0.160	0.233
r Vmean
Correlation	0.724*	0.770*	0.783*	0.610*
Δ Vmax
Minimum	− 0.268	− 0.248	− 0.304	− 0.228
Maximum	0.694	0.787	0.795	1.124
Average	0.150	0.217	0.187	0.278
RMSE	0.263	0.315	0.304	0.418
r Vmax
Correlation	0.810*	0.860*	0.852*	0.552*
Δ t Vmax
Minimum	− 0.212	− 0.021	− 0.016	− 0.205
Maximum	0.221	0.285	0.237	0.040
Average	− 0.007	0.046	0.024	− 0.034
RMSE	0.045	0.064	0.046	0.054
r t Vmax
Correlation	0.655*	0.604*	0.701*	0.700*

ISSN: 1756-0500