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Table 1 Differences, RMSE and correlations of the velocities of the bar Vmean, Vmax and t Vmax during traditional squats

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

 

T-force

Tendo

GymAware

Δ Vmean

 Minimum

− 0.014

− 0.069

− 0.053

 Maximum

0.136

0.137

0.158

 Average

0.062

0.020

0.046

 RMSE

0.070

0.046

0.064

r Vmean

 Correlation

0.970*

0.963*

0.958*

Δ Vmax

 Minimum

− 0.057

− 0.063

− 0.102

 Maximum

0.369

0.422

0.388

 Average

0.119

0.159

0.128

 RMSE

0.151

0.194

0.163

r Vmax

 Correlation

0.933*

0.932*

0.957*

Δ t Vmax

 Minimum

− 0.075

− 0.090

− 0.006

 Maximum

0.050

0.088

0.084

 Average

0.010

0.031

0.037

 RMSE

0.026

0.041

0.042

r t Vmax

 Correlation

0.985*

0.985*

0.990*

  1. The units are m/s for the velocities and s for time
  2. * Correlation is significant at a level of p < 0.01