Article

OBJECTIVE: To examine the effect of whole-body vibration (WBV) on running
biomechanics in individuals with anterior cruciate ligament reconstruction (ACLR).
DESIGN: Single-blind randomized crossover trial. SETTING: Research
laboratory. PARTICIPANTS: Individuals (N=20) with unilateral ACLR (age [+/-
SD]=22.3 [+/-3.3] years; mass=71.8 [+/-15.3] kg; time since ACLR=44.9 [+/-22.8]
months; 15 females, 10 patellar tendon autograft, 7 hamstrings autograft, 3
allograft; International Knee Documentation Committee Score=83.5 [+/-9.3]). MAIN
OUTCOME MEASURE: Participants performed isometric squats while being exposed to
WBV or no vibration (control). WBV and control conditions were delivered in a
randomized order during separate visits separated by 1-week washout periods.
Running biomechanics of the injured and uninjured limbs were evaluated before and
immediately after each intervention. Dependent variables included peak vertical
ground reaction force (GRF) and loading rate (LR), peak knee flexion angle and
external moment, and knee flexion excursion during the stance phase of running.
RESULTS: There was an increase in knee flexion excursion (+4.1 degrees , 95%
confidence interval [CI]: 0.65, 7.5 degrees ) and a trend toward a reduction in
instantaneous LR after WBV in the injured limb (-4.03 BW/sec(-1), 95% CI -0.38,
-7.69). No effect was observed on peak GRF, peak knee flexion angle, or peak
external knee flexion moment, and no effect was observed in the uninjured limb.
CONCLUSIONS: Our findings indicate that a single session of WBV acutely increases
knee flexion excursion. WBV could be useful to improve running characteristics in
individuals with knee pathology.
CI - Copyright (c) 2018 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS