Prelanding movement strategies among chronic ankle instability, coper, and control subjects

Han, Seunguk; Son, S. Jun; Kim, Hyunsoo; Lee, Hyunwook; Seeley, Matthew K.; Hopkins, Ty

doi:10.1080/14763141.2021.1927163

Cited by 14 publications

(10 citation statements)

References 47 publications

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“…It is interesting to note that copers displayed increased Gmed activity compared to controls. Our results may partially support previous research, which reported greater Gmed activation in copers than in uninjured controls during functional movement 25 26 . In addition, copers had the largest Gmed thickness during band-walking exercises 27 .…”

Section: Discussionsupporting

confidence: 91%

EMG Analysis During Static Balance in Chronic Ankle Instability, Coper and Controls

Han,

Oh,

Lee

et al. 2023

Int J Sports Med

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Patients with chronic ankle instability (CAI) consistently display postural control alterations, which may result from sensorimotor dysfunction. This study aimed to compare muscle activity in the lower extremity and postural control among individuals with CAI, copers and uninjured controls during a static balance test. A total of 57 physically active participants were categorized into three groups (CAI, copers and controls) and performed a single-leg balance test with two visual conditions: eyes open and eyes closed. Muscle activity in six lower extremity muscles and center of pressure (CoP) variables were recorded and analyzed. Patients with CAI exhibited greater muscle activity in the medial gastrocnemius and gluteus maximus compared to controls or copers, regardless of the visual condition. Copers displayed increased gluteus medius activity compared to controls. Additionally, all groups demonstrated increased muscle activity and CoP variables when visual feedback was disrupted. These findings suggest that patients with CAI may have less effective recruitment of motor units during static balance. On the other hand, greater muscle activity in the gluteus medius in copers may represent a coping mechanism to avoid further ankle injuries. Further research on muscle activity during dynamic postural control is warranted to explore sensorimotor alterations in patients with CAI.

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Section: Discussionsupporting

confidence: 91%

EMG Analysis During Static Balance in Chronic Ankle Instability, Coper and Controls

Han,

Oh,

Lee

et al. 2023

Int J Sports Med

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“…38 Increased knee valgus angle is one of the high-risk factors for ACL injury and a significant biomechanical characteristic change caused by landing phase compensation strategy in patients with CAI. 39,40 The present study demonstrated a significant reduction in peak knee valgus angle at the early landing phase in the KT group. Sigward et al 41 found a significant negative correlation between ankle dorsiflexion range of motion and knee frontal plane excursion in female soccer players during a drop land task.…”

Section: Lsjsupporting

confidence: 51%

Effects of Kinesio taping on lower limb biomechanical characteristics during unexpected jumping in patients with chronic ankle instability

Wang,

Chen,

Ding

et al. 2024

Scandinavian Med Sci Sports

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PurposeThe current biomechanical research on the application of Kinesio taping (KT) to patients with chronic ankle instability (CAI) has focused on testing the expected movements. However, unexpected movements are more common in actual sports. Therefore, the present study aimed to investigate the effects of KT on the biomechanical characteristics of the knee and ankle joints during unexpected jumping movements.MethodsTwenty‐one patients with unilateral CAI were recruited to capture the biomechanical parameters during unexpected jumping movements under different interventions: no taping (NT), placebo taping (PT), and KT. A one‐way repeated measures analysis of variance was used to compare the differences in knee and ankle biomechanical characteristics among patients with CAI between the three intervention conditions.ResultsAt initial contact, the KT group demonstrated a significant decrease in ankle plantarflexion and knee flexion angles compared to the NT group (p < 0.05). At the early landing phase, the KT group had a significant increase in peak ankle dorsiflexion angle, peak ankle eversion angle, peak ankle dorsiflexion moment, and peak ankle eversion moment compared to the NT and PT groups (p < 0.05). Furthermore, the KT group had a significantly reduced peak knee flexion angle, peak knee eversion angle, and peak vertical ground reaction force (p < 0.05) compared to the NT and PT groups.ConclusionKT significantly improves the sprain‐prone touchdown posture of patients with CAI. And reducing the risk of ankle sprains during the early landing phase by promoting ankle dorsiflexion and eversion angles and moments.

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“…The cut‐off frequency of 10 Hz was determined by residual analyses 5 for all landing trials. A static calibration trial in the anatomical position was recorded to define neutral (zero) joint angles using previously described methods, 19 and this calibration file was applied to all landing and jumping trials. Local coordinate systems for the ankle, knee, and hip were defined using the International Society of Biomechanics (ISB)'s recommendation 20 .…”

Section: Methodsmentioning

confidence: 99%

“…Fifteen participants with CAI and 15 participants without any history of lateral ankle sprain (controls) were recruited in the study (Table 1). The specific inclusion criteria for the CAI group were determined based on the International Ankle Consortium's position statement 2 and included (i) the first lateral ankle sprain occurred at least 12 months ago (ii) reports of the previously injured joint “giving way” and/or recurrent sprain and/or “feelings of instability”, (iii) Cumberland Ankle Instability Tool (CAIT) 15 scoring <24, FAAM‐ADL score <90%, 19 FAAM‐Sports score <80%, (iv) participating in >90 min or more of physical activity per week which involved jump landing movements. Apart from the general requirements based on the International Ankle Consortium's position statement, 2 another requirement of jumping activity was used in this study.…”

Section: Methodsmentioning

confidence: 99%

Anticipation of landing leg masks ankle inversion orientation deficits and peroneal insufficiency during jump landing in people with chronic ankle instability

Hou,

Shen,

Fong

et al. 2024

Scandinavian Med Sci Sports

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Ankle inversion orientation and peroneal activation insufficiency may contribute to lateral ankle sprains during landing in chronic ankle instability (CAI); however, how anticipation alters these factors is neglected. This study aimed to assess the impact of anticipation on joint orientation and muscle activity during landing in individuals with CAI. Fifteen participants with CAI and 15 healthy participants (control) were recruited to perform single‐leg landings after bilateral countermovement jumps when the landing limb was specified before (planned) or after (unplanned) take‐off. Joint angle (hip, knee, and ankle) and electromyography (gluteus medius, rectus femoris, biceps femoris, gastrocnemius lateral head, tibialis anterior, and peroneal longus) were collected and analyzed with 2 (groups) × 2 (conditions) statistical parametric mapping ANOVA. In the unplanned condition, the CAI group demonstrated a less plantarflexed (maximum difference [MD] = 9.5°, p = 0.047) and more inverted ankle joint (MD = 4.1°, p < 0.001) before ground contact, along with lower peroneal activity at ground contact compared to the control group (MD = 28.9% of peak activation, p < 0.001). No significant differences between groups were observed in the planned condition. In conclusion, anticipation may mask jump landing deficits in people with CAI, including inverted ankle orientation and reduced peroneus longus activity pre‐ and post‐landing, which were observed exclusively in unplanned landings. Clinicians and researchers need to recognize the impact of anticipation on apparent landing deficits and consider the implications for injury prevention and rehabilitation strategies.

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Prelanding movement strategies among chronic ankle instability, coper, and control subjects

Cited by 14 publications

References 47 publications

EMG Analysis During Static Balance in Chronic Ankle Instability, Coper and Controls

EMG Analysis During Static Balance in Chronic Ankle Instability, Coper and Controls

Effects of Kinesio taping on lower limb biomechanical characteristics during unexpected jumping in patients with chronic ankle instability

Anticipation of landing leg masks ankle inversion orientation deficits and peroneal insufficiency during jump landing in people with chronic ankle instability

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