Healthy Age-Matched Hypothesis

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While we did not have enough participants in the pilot study to perform any inferential statistics, we feel the knowledge and experience gained is important for informing the full study. Therefore, we have revised the protocol. Below is the proposed plan for the full study.
Objectives

The overall objective of the full study is to determine if ALL survivors are at increased risk for postural control deficits compared to healthy age-matched individuals. The specific aims and hypotheses for this project are:
Aim 1: Compare postural control in ALL survivors to healthy age-matched individuals. Specifically, the following hypotheses will be tested:
1. There will be no difference in postural control, as measured with dynamic posturography, during …show more content…
When compared to healthy age-matched individuals, ALL survivors will display decreased postural control during cognitive-motor task conditions (ie. standing activities with an additional imposed cognitive load) with respect to:
• Equilibrium score
• Vision ratio
• Somatosensory ratio
• Vestibular ratio
3. ALL survivors will display greater cognitive-motor task cost than healthy age matched individuals in equilibrium score.
4. During cognitive-motor task conditions where there are no differences in dynamic posturography measures between ALL survivors and healthy age-matched individuals, there will be diminished postural control in ALL survivors as documented by poorer cognitive performance. (NOTE: We belive during cognitive-motor tasks, diminished cognitive performance without concomitant diminished physical performance is also indicative of diminished postural control.)
This will be determined by measuring cognitive performance during the following conditions:
• SOT Condition 1: Normal vision-fixed support
• SOT Condition 2: Absent vision-fixed support
• SOT Condition 3: Sway referenced vision-fixed support
• SOT Condition 4: Normal vision-Sway referenced support
• SOT Condition 5: Absent vision- Sway referenced

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