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Table 1 Anthropometrics and acceleration-based outcomes measures of the Romberg test ( N= 18)

From: Mobile Romberg test assessment (mRomberg)

  Frail (N = 9) Non-frail (N = 9)
  Mean SD Mean SD
Age (years) 82.78 6.85 77.11 3.89
Weight (kilograms) 55.56 5.48 65.44 8.16
Height (m) 1.56 0.08 1.59 0.08
BMI (kg/m2) 23.09 3.11 25.73 1.88
Max_xAccel_EC_para (m/s2) 0.08 0.07 0.04 0.03
Min_xAccel_EC_para (m/s2) -0.09 0.13 -0.01 0.04
Max_zAccel_EC_para (m/s2) -0.04 0.19 -0.41 0.15
Min_zAccel_EC_para (m/s2) -0.22 0.19 -0.51 0.17
Max_RV_Accel_EC_para (m/s2) 1.09 0.10 1.04 0.01
Min_RV_Accel_EC_para (m/s2) 0.92 0.06 0.99 0.01
Max_xAccel_EO_para (m/s2) 0.07 0.05 0.03 0.04
Min_xAccel_EO_para (m/s2) -0.06 0.06 -0.02 0.04
Max_zAccel_EO_para (m/s2) 0.05 0.18 -0.42 0.15
Min_zAccel_EO_para (m/s2) -0.21 0.19 -0.50 0.16
Max_RV_Accel_EO_para (m/s2) 1.10 0.10 1.04 0.01
Min_RV_Accel_EO_para (m/s2) 0.93 0.04 0.99 0.01
Max_xAccel_EC_Tandem (m/s2) 0.13 0.04 0.18 0.25
Min_xAccel_EC_Tandem (m/s2) -0.13 0.12 -0.09 0.12
Max_zAccel_EC_Tandem (m/s2) 0.06 0.28 -0.27 0.28
Min_zAccel_EC_Tandem (m/s2) -0.15 0.23 -0.50 0.18
Max_RV_Accel_EC_Tandem (m/s2) 1.10 0.04 1.14 0.14
Min_RV_Accel_EC_Tandem (m/s2) 0.91 0.05 0.91 0.12
Max_xAccel_EO_Tandem (m/s2) 0.13 0.08 0.08 0.02
Min_xAccel_EO_Tandem (m/s2) -0.05 0.11 -0.04 0.06
Max_zAccel_EO_Tandem (m/s2) 0.05 0.26 -0.36 0.20
Min_zAccel_EO_Tandem (m/s2) -0.17 0.25 -0.47 0.19
Max_RV_Accel_EO_Tandem (m/s2) 1.06 0.04 1.07 0.02
Min_RV_Accel_EO_Tandem (m/s2) 0.94 0.03 0.97 0.03
  1. Max. maximum; Min. minimum; x. x axis; z. z axis; RV. resultant vector; accel. acceleration; EC. eyes closed; EO. eyes open; m. meters; s. seconds; kg. kilograms.