Table 3.
Interaction effects between bed rest with and without exercise countermeasure on cognitive and sensorimotor performance.
DSS | PPB time (s) | Cube accuracy | Card time (s) | FMT total time (s) | FMT 1st total time (s) | FMT 2nd total time (s) | SOT-5 % | SOT-5M % | ||
---|---|---|---|---|---|---|---|---|---|---|
Group:a | ||||||||||
Δ Exercise | β | 10.53 | ||||||||
p | 0.016 | |||||||||
Time:b | ||||||||||
Δ BR−12 | β | 38.39 | −13.85 | 3.91 | 2.00 | 1.94 | −20.20 | |||
p | 0.002 | 0.007 | 0.002 | 0.001 | 0.011 | 0.003 | ||||
Δ BR7 | β | – | – | – | – | – | ||||
p | ||||||||||
Δ BR50 | β | – | – | – | – | – | ||||
p | ||||||||||
Δ BR~70 | β | −5.15 | −17.61 | 6.28* | 2.82* | 3.61* | −8.92 | −29.88* | ||
p | 0.041 | 0.042 | <0.001 | <0.001 | <0.001 | 0.040 | <0.001 | |||
Δ BR+8 | β | −5.77 | −27.15 | 4.25 | 2.41* | 1.84 | ||||
p | −5.77 | 0.002 | 4.25 | <0.001 | 0.017 | |||||
Δ BR+12 | β | −28.38 | −5.87 | −26.32 | ||||||
p | 0.025 | 0.020 | 0.002 | |||||||
Interaction:c | ||||||||||
at BR+8 | β | −4.33 | −2.57 | |||||||
0.016 | 0.003 | |||||||||
β | −4.33 | −2.57 | ||||||||
p | 0.016 | 0.003 | ||||||||
at BR+12 | β | −1.84 | ||||||||
p | 0.032 |
aDifference compaired to bed rest control subjects; bdifference from BR−8; cdifference from control subjects at BR−8; DSS, digit symbol substitution test; PPB, Purdue pegboard test; Cube, 3D cube rotation test; Card, 2D card rotation test; FMT, functional mobility test; SOT-5, sensory organization test 5; SOT-5M, sensory organization test 5 with head movement; BR, bed rest; β, parameter estimate; *, effects that reamined significant after Bonferroni correction for multiple testing; Note: columns for the rod and frame test, speed of the cube rotation task and accuracy of the card rotation task are not presented because none of the post hoc tests was significant.