Article

Lateral trunk lean over the stance limb and toeing-out are potential adaptive
gait mechanisms that reduce knee joint loading. The purpose of the present study
was to evaluate the time-varying behaviour, the test-retest reliability and the
concurrent validity of lateral trunk lean angle and toe-out angle during
prolonged walking in healthy adults. Twenty healthy volunteers (51+/-8 years, 12
females) completed two test sessions at least 24h apart but within the same week.
For each participant, at each session, three-dimensional gait kinematics were
assessed intermittently during 60min of treadmill walking. Additionally,
over-ground three-dimensional gait analysis was performed immediately before and
after the treadmill walking. Maximum lateral trunk lean angle and maximum toe-out
angle did not change over time (p>0.05), were consistent from day to day
(test-retest reliability: ICC=0.61-0.72 and 0.90-0.95, respectively) and were
consistent with over-ground measures (concurrent validity: ICC=0.88 and 0.92,
respectively). These findings suggest that lateral trunk lean angle and toe-out
angle are consistent during prolonged walking and that these measures are
reliable and valid for use in studying adaptive gait mechanisms.
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Langue : ANGLAIS