Effects of dynamic head tilts on sensory organization test performance: a comparison between college-age athletes and nonathletes.
METHODS
Controlled laboratory study.


OBJECTIVE
To compare postural performance measures of athletes with those of nonathletes when completing the standard Sensory Organization Test (SOT) and a modified SOT that included dynamic head tilts (DHT-SOT).


BACKGROUND
Authors of recently published research have suggested that modifications to the SOT protocol (eg, introduction of pitch and roll head tilts) may enhance the test's sensitivity when assessing postural stability in individuals with higher balance capabilities or with well-compensated sensory deficits.


METHODS
Nineteen athletes and 19 nonathletes (group) completed both the SOT and DHT-SOT (protocol). During the SOT, participants stood upright as steadily as possible for 20 seconds during each of 6 different sensory conditions. As a variation of the SOT, the DHT-SOT incorporated active pitch and roll head tilts into the SOT protocol. Four 2-way mixed-model analyses of variance (with protocol as the repeated factor) were performed to determine if the composite equilibrium score or the visual, vestibular, or somatosensory ratio scores differed between the 2 groups across the 2 testing protocols.


RESULTS
Significant group-by-protocol interaction effects were present for both the composite equilibrium score and visual ratio. Follow-up simple main-effects analyses indicated that these measures did not differ between groups for the SOT protocol but were significantly different on the DHT-SOT.


CONCLUSIONS
The addition of dynamic head tilts to the SOT protocol resulted in subtle differences in balance function between athletes and nonathletes. Athletes demonstrated an increased ability to adapt to sensory disruptions during the DHT-SOT. Therapists should consider including active pitch and roll head tilts to the SOT when evaluating individuals with higher balance function or to detect subtle deficits in balance function.


METHODS
Diagnosis, level 3b.
Clark
Sean
S
Gordon College Center for Balance, Mobility and Wellness, Wenham, MA 01984, USA. sean.clark@gordon.edu
Iltis
Peter W
PW
D000328:Adult; D019416:Head Movements / Q000502:physiology*; D006801:Humans; D004856:Postural Balance / Q000502:physiology*; D011187:Posture / Q000502:physiology*; D012677:Sensation / Q000502:physiology*; D013177:Sports / Q000502:physiology*