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From:
Arch Intern Med. Author manuscript; available in PMC Sep 21, 2012.
Published in final edited form as:
Arch Intern Med. Jan 25, 2010; 170(2): 170–178.
doi: 10.1001/archinternmed.2009.494
Table 3
Mean change (SDs) for outcome measures.
Variable *Mean Change at Mid-Point from Baseline (SD) **Mean Change at Final from Baseline (SD) **
2x RTn=51n=46
Stroop CW – Stroop C (sec)−0.96 (15.13)5.01 (13.75)
Trail B – Trail A (sec)10.27 (40.25)10.96 (36.92)
Digit Forward – Digit Backward−0.67 (2.94)−0.47 (2.24)
Gait Speed (m/sec)0.19 (0.17)0.24 (0.16)
1 RM (N)60.27 (51.1869.80 (74.75)
Peak Muscle Power (W)74.68 (118.55)72.42 (108.12)
% Δ Whole Brain Volume§−0.02 (0.60)−0.43 (0.65)
1x RTn=49n=47
Stroop CW – Stroop C (sec)0.28 (28.37)6.22 (22.31)
Trail B – Trail A (sec)4.91 (26.12)7.3 (30.36)
Digit Forward – Digit Backward−0.43 (2.63)0.06 (2.54)
Gait Speed (m/sec)0.18 (0.19)0.19 (0.19)
1 RM (N)42.15 (57.26)44.22 (67.10)
Peak Muscle Power (W)−27.54 (105.66)−78.61 (151.03)
% Δ Whole Brain Volume§−0.04 (0.48)−0.32 (0.54)
BATn=44n=42
Stroop CW – Stroop C (sec)−4.27 (15.15)0.26 (17.12)
Trail B – Trail A (sec)2.17 (39.27)8.64 (32.15)
Digit Forward – Digit Backward−0.93 (3.42)−0.64 (2.70)
Gait Speed (m/sec)0.17 (0.16)0.22 (0.18)
1 RM (N)24.73 (53.44)18.15 (70.06)
Peak Muscle Power (W)−24.27 (132.56)−90.60 (144.58)
% Δ Whole Brain Volume§0.13 (0.67)0.00 (0.63)
*Stroop CW = Stroop colour-words condition; Stroop C = Stroop coloured-X’s condition; N = newtons; W = watts; m/sec = meters per second.
**Mean change for all cognitive measures = baseline value minus mid-point value or baseline value minus final value. Positive change indicates improvement. Mean change for all performance measures = mid-point value minus baseline value or final value minus baseline value. Positive change indicates improvement.
2x RT baseline n=31, mid-point n=26, final n=25; 1x RT baseline n=30, mid-point n=28, final n=27; BAT baseline n=27, mid-point n=21, final n=24.
2x RT baseline n=30, mid-point n=23, Final n=25; 1x RT baseline n=29, mid-point n=26, final n=27; BAT baseline n=27, mid-point n=21, final n=24.
§2x RT % Δ in whole brain volume from baseline to mid-point n=18, % Δ in whole brain volume from baseline to final n=18; 1x RT % Δ in whole brain volume from baseline to mid-point n=28, % Δ in whole brain volume from baseline to final n=28; BAT % Δ in whole brain volume from baseline to mid-point n=20, % Δ in whole brain volume from baseline to final n=18.