Prophylactic ankle supports effects on time to stabilization, perceived stability and ground reaction force during lateral landing in female collegiate athletes with chronic ankle instability

Abstract

Background This study was designed to investigate effects of Kinesiotape (KT) with closed basket weave method and lace-up braces (LB) on the vertical time to stabilization, peak vertical ground reaction force (PvGRF), and time to PvGRF as well as perceived stability during lateral landing of participants with chronic ankle instability before and after fatigue. Methods Thirty female college athletes with chronic ankle instability of three conditions (control, KT, and LB) performed lateral landing from a 30 cm high step on the plantar pressure platform pre and post fatigue. Results The pre-test findings on the rearfoot, of LB indicated negatively increased the PvGRF force (F2,58=3.63, P = 0.04) and decreased the time to PvGRF (F2,58=4.67, P = 0.01). The Bonferroni post-hoc testing revealed LB condition increased the PvGRF than the control (P = 0.002) and KT (P = 0.038). Also, the post-hoc testing showed LB condition decreased the time to PvGRF force than the control (P = 0.05) and KT (P = 0.01). The LB negatively prolonged vertical time to stabilization in the forefoot (F2,58=6.74, P = 0.002) and rearfoot (F2,58=6.13, P = 0.004) after fatigue. The post-hoc testing revealed LB condition generated a slower vertical time to stabilization than the control and KT conditions (P ≤ 0.05). The use of KT had no positive effects as elevated the PvGRF in the forefoot post fatigue (F2,58=7.11, P = 0.002). The post-hoc test uncovered that KT augmented the PvGRF than control (P = 0.01) and LB (P < 0.001). On the other hand, using KT had psychological effects at pre-fatigue which resulting significantly greater in perceived stability compared to other conditions (F2,58=9.65, P < 0.001). The post-hoc test showed that using KT increased perceived stability than LB (P = 0.004) and control (P < 0.001). Moreover, perceived stability improved significantly in KT and LB compared to the control condition at the post-fatigue (P ≤ 0.001). Conclusions Despite the positive psychological impact of the prophylactic ankle supports, there were no positive effect on the vertical time to stabilization, PvGRF, and time to PvGRF. Further studies are needed to distinguish the psychological and actual effects of prophylactic ankle supports on athletes with chronic ankle instability.

Effects of ankle Kinesio taping on knee and ankle joint biomechanics during unanticipated jumps in collegiate athletes

“…The findings of the present study demonstrated that KT significantly reduced peak vGRF. However, Yalfani et al [ 39 ] conducted ankle KT on patients with chronic ankle instability and found that vGRF during lateral landing tasks was significantly higher than that in the control group. The disparities in results could be related to variations in taping techniques.…”

Using clinician-oriented and laboratory-oriented assessments to study dynamic stability of individuals with chronic ankle instability

“…The Open-source software Python 3.8 was used to filter and calculate the original ground reaction force data, specifically using a second-order low-pass Butterworth filter with a cut-off frequency of 12Hz. 47 The TTS after landing was defined as the time for the vertical force component to reach and stay within 5% of the body weight. 48 …”

Bilateral symmetry of vertical time to stabilization in postural sway after double‐leg landing in elite athletes with unilateral chronic ankle sprain

“…Landing has been recognized as one of the most common causes of non-contact ankle sprain and postural controlling after landing is one of the most important factors in preventing injury [ 8 ]. Some studies reported that the risk of ankle sprain in people with balance deficits is up to seven times higher than that in their healthy counterparts [ 9 ].…”

“…Some studies reported that the risk of ankle sprain in people with balance deficits is up to seven times higher than that in their healthy counterparts [ 9 ]. One of the important parameters of postural controlling during landing is the time to stabilization (TTS) [ 8 ]. TTS is a variable for measuring neuromuscular control [ 10 ], and vertical TTS (vTTS) refers to the time at which the vertical force of the ground after a dynamic disturbance is stabilized until the body reaches a steady posture.…”

“…Most landing-related studies have assumed that the right and left lower limb are symmetrical [ 16 , 17 ]. Therefore, these studies have only chosen the dominant side to represent the overall performance of the subjects’ bilateral lower extremities [ 8 , 18 ]. However, considerable studies show that the presence of symmetry affects the lower extremities during landing movements [ 17 , 18 ].…”