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Table 1 ABF effect on sway parameters Parameters. COP-RMS, F95%, and Acc-RMS are reported, subject-by-subject, for trials with and without ABF. Percentage differences between these two conditions are also reported. Standard deviations are indicated in parenthesis.

From: Influence of a portable audio-biofeedback device on structural properties of postural sway

 

COP-RMS

(NO – ABF) [mm]

F95 %

(NO – ABF) [Hz]

Acc-RMS

(NO – ABF) [mm/s2]

COP-RMS

(ABF) [mm]

F95 %

(ABF) [Hz]

Acc-RMS

(ABF) [mm/s2]

COP-RMS

%difference

F95%

%difference

Acc-RMS

%difference

Subj. #1

10.79 (2.84)

0.99 (0.05)

137 (48)

9.57 (1.86)

1.18 (0.16)

118 (13)

-11.2

19.1

-14.1

Subj. #2

9.91 (2.77)

1.20 (0.29)

142 (27)

9.50 (2.26)

1.30 (0.20)

120 (23)

-4.1

8.7

-15.6

Subj. #3

9.21 (2.94)

1.16 (0.14)

121 (23)

8.61 (1.42)

1.37 (0.07)

113 (21)

-6.5

18.0

-7.0

Subj. #4

10.23 (1.50)

1.43 (0.08)

117 (30)

8.80 (1.74)

1.49 (0.12)

100 (12)

-13.9

4.1

-14.6

Subj. #5

8.50 (0.93)

1.49 (0.22)

143 (46)

6.90 (1.35)

1.53 (0.28)

115 (19)

-18.8

2.6

-19.3

Subj. #6

9.62 (1.55)

1.34 (0.30)

126 (43)

7.35 (0.88)

1.34 (0.09)

89 (20)

-23.6

0.0

-29.2

Subj. #7

6.37 (1.48)

1.60 (0.07)

64 (8.3)

5.19 (0.59)

1.94 (0.12)

51 (4.7)

-18.5

20.8

-20.1

Subj. #8

6.08 (1.19)

1.78 (0.25)

48 (6.3)

6.75 (1.41)

1.37 (0.16)

39 (3.8)

10.9

-23.1

-17.3

Average

8.84 (1.75)

1.37 (0.26)

112 (36)

7.83 (1.54)

1.44 (0.15)

93 (31)

-10.7 (10.92)

6.2 (14.4)

-17.2 (6.3)