The mean UST , CDE , and longitudinal and torsional US amplitudes were 58.21 seconds 33.81 ( SD ) , 7.74 6.23 , 0.45 0.30 , and 26.30 12.60 in Group 1 and 63.83 23.42 seconds , 12.36 6.75 , 0.23 0.26 , and 44.65 14.38 in Group 2 , respectively .