Seasickness Susceptability and Vestibular Time Constant

Participants were selected from the military navy crewmembers prior to commencing of active sailing.A vestibular time constant was calculated based on velocity step testing on a rotatory chair at baseline, 3 months and 6 month following active sailing duty.A seasickness questionnaire (WIKER) was completed during follow-up visits. study participants were divided to three groups based on WIKER score - susceptible , non-susceptible and habituating. Vestibular time constant was compared between study groups.

Inclusion Criteria:healthy male Navy sailors in basic trainingExclusion Criteria:History of hearing lossOtoscopic findings of ear pathologyAn implanted electrodeA finding of vestibulopathy upon otoneurological examination -Discontinuation of active sailing for any reason during study follow-upWithdrawal of informed consent.