Computational protocol: Effects of Visual Display on Joint Excursions Used to Play Virtual Dodgeball

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Protocol publication

[…] We calculated that we needed 14 participants to determine the within-subject effects of display type with 80% power, assuming alpha=.05, and correlation between measures of .5 and an effect size of f=0.4 (large effect) using G*Power 3.19 []. The effect size was based on initial pilot testing of the effects of display types on movement strategies. The dependent measures were (1) movement time, (2) hand position at target contact (ie, anterior-posterior [AP], medial-lateral [ML], vertical), (3) joint excursions (ie, right ankle, knee, hip, spine, shoulder, and elbow), and (4) displacement of COM (ie, AP, ML, vertical). Separate 4-way mixed-model multivariate analysis of variance with sex as the between-subjects variable, and environment type (3DTV, HMD), IH (IH0-IH4), and Level (1-3) as the repeated factors were performed on the dependent measures. Posthoc analyses were performed using the method of least significant differences. Interactions were examined using a simple effects model. The NASA TLX data were analyzed used paired t tests with a Bonferroni correction for multiple comparisons. All statistical analyses were completed in SPSS 22. […]

Pipeline specifications

Software tools G*Power, SPSS
Application Miscellaneous
Diseases Head and Neck Neoplasms, Movement Disorders, Nervous System Diseases