Study on Physiological Reference Values of Video Head Impulse Test Parameters in Military Pilot Cadets
HU Jiajia
SUN Junya
TONG Jiabao
JIN Zhanguo
JIA Hongbo
Abstract：Objective The study aims to establish physiological reference ranges of dynamic vestibulo-ocular reflex(VOR)function in military pilot cadets using the video head impulse test(vHIT)to optimize vestibular function evaluation protocols and provide an objective tool amogh selection criteria for this population.Methods A total of 276 male pilot cadets,aged 17～22 years(mean±SD,19.09±1.09),were enrolled.Vestibulo-ocular reflex parameters were assessed in two vHIT paradigms—the head impulse paradigm(HIMP)and suppression head impulse paradigm(SHIMP)—in all participants.HIMP was used to test bilateral anterior(ASC),horizontal(HSC)and posterior semicircular canals(PSC),while SHIMP was used to test only the horizontal semicircular canals.Results HIMP gain values were:0.85(0.79,0.92)for left ASCs,0.90±0.09 for right ASCs,0.92(0.88,0.96)for left HSCs,0.98(0.93,1.02)for right HSCs,0.77(0.72,0.82)for left PSCs and 0.91(0.84,0.98)for right PSCs.Gain asymmetry values were:3%(2%～4%)between right and left HSCs,3%(1%～6%)between left ASC and right PSC,and 7%(5%～11%)right ASC and left PSC.SHIMP gain values were 0.84(0.81,0.88)for the left and 0.86(0.82,0.93)for the right HSCs,with a gain asymmetry value at 2%(1%～4%)favoring the right side HSC(P<0.05).Gain values of HSCs exceeded those of vertical semicircular canals(P<0.05),with HIMP gains greater than SHIMP gains(P<0.05).Conclusion This study has established vHIT physiological reference ranges for pilot cadets for both HIMP and SHIMP paradigms,laying crucial groundwork for developing standardized vestibular assessment protocols for this population.
Keywords：military flying cadetsthe video head impulse testvestibular-ocular reflex
Publication Date：2025-08-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 648-651 )