Lateral Ankle Sprain and Chronic Ankle Instability

Kobayashi, Takumi; Gamada, Kazuyoshi

doi:10.1177/1938640014539813

Cited by 116 publications

(105 citation statements)

References 193 publications

(296 reference statements)

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“…For example, warm-up protocols that involve repeated eccentric contractions might help prevent non-contact ACL injuries (Lyle et al, 2014). Also, training or rehabilitation regimens that incorporate eccentric contractions could potentially improve leg dexterity in individuals with a previous history of ankle sprains and thereby reduce the likelihood of recurring sprains (Kobayashi and Gamada, 2014). Furthermore, contralateral facilitation of leg dexterity due to eccentric exercise might facilitate rehabilitation in individuals with hemiparesis.…”

Section: Discussionmentioning

confidence: 99%

“…Accordingly, our previous work demonstrated reduced leg dexterity in female athletes which may contribute to their altered landing biomechanics and expose them to greater risks of non-contact anterior cruciate ligament (ACL) injuries (Lawrence et al, 2014; Lyle et al, 2014; Lawrence et al, 2016). Impairments in leg dexterity may also lead to reductions in mobility in individuals with hemiparesis (Higginson et al, 2006) and higher risks of other injuries such as repeated ankle sprains (Arnold et al, 2009; Kobayashi and Gamada, 2014). Therefore, improving our understanding of the sensorimotor mechanisms that enable dynamic foot-ground interactions may be important for elucidating mechanisms of impaired balance and locomotion in health and disease.…”

Section: Introductionmentioning

confidence: 99%

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Unilateral Eccentric Contraction of the Plantarflexors Leads to Bilateral Alterations in Leg Dexterity

2016

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Eccentric contractions can affect musculotendon mechanical properties and disrupt muscle proprioception, but their behavioral consequences are poorly understood. We tested whether repeated eccentric contractions of plantarflexor muscles of one leg affected the dexterity of either leg. Twenty healthy male subjects (27.3 ± 4.0 yrs) compressed a compliant and slender spring prone to buckling with each isolated leg. The maximal instability they could control (i.e., the maximal average sustained compression force, or lower extremity dexterity force, LEDforce) quantified the dexterity of each leg. We found that eccentric contractions did not affect LEDforce, but reduced force variability (LEDSD). Surprisingly, LEDforce increased in the non-exposed, contralateral leg. These effects were specific to exposure to eccentric contractions because an effort-matched exposure to walking did not affect leg dexterity. In the exposed leg, eccentric contractions (i) reduced voluntary error corrections during spring compressions (i.e., reduced 0.5–4 Hz power of LEDforce); (ii) did not change spinal excitability (i.e., unaffected H-reflexes); and (iii) changed the structure of the neural drive to the α-motoneuron pool (i.e., reduced EMG power within the 4–8 Hz physiological tremor band). These results suggest that repeated eccentric contractions alter the feedback control for dexterity in the exposed leg by reducing muscle spindle sensitivity. Moreover, the unexpected improvement in LEDforce in the non-exposed contralateral leg was likely a consequence of crossed-effects on its spinal and supraspinal feedback control. We discuss the implications of these bilateral effects of unilateral eccentric contractions, their effect on spinal and supraspinal control of dynamic foot-ground interactions, and their potential to facilitate rehabilitation from musculoskeletal and neuromotor impairments.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Unilateral Eccentric Contraction of the Plantarflexors Leads to Bilateral Alterations in Leg Dexterity

2016

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“…Kalf palpasyonunda da hassasiyet olası semptomlardandır. Aşil tendinitine hazırlayıcı faktörler şu şekilde özetlenebilir: Tedavisinde genel prensipler akut dönemde istirahat, soğuk uygulama, antiinflamatuvar tedaviyi içermelidir (8). Beraberinde ayakkabı modifikasyonları topuk yastığı gibi ortez kullanımı ve aşil germe egzersizleri (Resim 1) önemlidir (10).…”

Section: Aşil Tendinitiunclassified

“…Plantar fasiit idiyopatik olabileceği gibi ayağın yapısal bozuklukları (pes kavus, planovalgus, pronasyon deformitesi), bacak boy farkı, aşırı yüklenme (gergin aşil, yağ dokusu atrofisi), obezite, inflamatuvar hastalıklar gibi sistemik hastalıklar, tuzak nöropatileri, subkalkaneal bursit gibi durumların varlığı da plantar fasiite neden olabilir. Tedavisinde plantar fasiit ve aşil germe egzersizlerinin (Resim 5) yanı sıra lokal soğuk uygulama, analjezik ve antiinflamatuvar tedaviler yardımcıdır (8).…”

Section: Plantar Fasiitunclassified

Exercise and Rehabilitation Principles in Painful Foot and Ankle Problems

Ofluoğlu¹

2014

Turk J Phys Med Rehab

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Painful foot and ankle situations are miscellaneous. Protect anatomical integrity and providing flexibility, together with re-achieving strength, are very important in the treatment of painful musculo-skeletal diseases. Exercise is essential to return to full activity and sports. The healing period after injury can be classified as acute phase, subacute phase, recovery phase, and return to functional and sports activity phase. Rest, ice application, elevation, and compression with analgesic-anti-inflammatory treatment are done in the acute phase. After the acute phase, range of motion exercises and isometric strengthening should be started in the subacute phase. In further phases, the impact of exercises should be increased, and the patient should switch to weight-bearing and a more effective strengthening program. Eventually, in the functional phase, the patient should be prepared for daily living activities, and if he does sports, he should return to sports activities. Key Words: Foot and ankle injury, foot pain, exercise ÖzetAyak-ayak bileği ağrılı durumları çok çeşitlidir. Anatomik bütünlüğün korunması ve esneklik ile kuvvetin yeniden sağlanması ağrılı kas-iskelet hastalıklarının tedavisinde çok önemlidir. Yeniden aktiviteye ve spora dönüşün sağlanmasında egzersizin yeri tartışılmazdır. Yaralanmadan sonraki iyileşme fazlarını akut faz, subakut faz, iyileşme fazı, fonksiyonel aktivitelere ve sportif faaliyetlere dönüş fazı olarak sınıflayabiliriz. Akut fazda istirahat, buz uygulama, elevasyon ve kompresyonu ile analjezik antiinflamatuvar tedavi yapılır. Akut durum geçtikten sonra subakut fazda eklem hareket açıklığı (EHA) egzersizleri ve izometrik güçlendirme egzersizleri başlanmalı, ilerleyen safhalarda egzersiz yoğunluğu arttırılarak yük aktarımı ve efektif güçlendirme programlarına geçiş yapılmalıdır. Son olarak fonksiyonel fazda hasta günlük yaşam aktivitelerine hazırlanmalı ve spor yapıyorsa spora dönüş sağlanmalıdır.

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“…Eccentric activity of calf muscles and concentric activity of tibialis anterior and posterior muscles are important for ankle stability. 6,7 As a method to prevent CAI, strengthening of peroneus longus that, contributes to eversion of the ankle joint has been, suggested. 8 Among therapeutic interventions to prevent CAI, squat exercises are typical closed-chain movements that occur simultaneously with movements of ankle, knee, and hip joints.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Activities of Tibialis Anterior, Peroneus Longus, and Tibialis Posterior Muscles according to Lunge Squats and Bulgarian Split Squats in a Healthy Population

Kim¹,

Kim²,

Yang³

et al. 2017

J KEMA

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Background Previous studies reported that one-leg squat has various advantages in functional activities, no study has studied the effect of muscle activity on ankle stability. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons. org/licenses/by-nc/4.0) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.Purpose The purpose of this study was to investigate the differential effects of squat type on the activity of the tibialis anterior, peroneus longus and tibialis posterior muscle for ankle stability.Study design Cross-sectional study. MethodsThe participants were 30 healthy adults. During each squat execution, tibialis anterior, peroneus longus and tibialis posterior muscle activities were assessed using surface electromyography under control of each squat posture. ResultsThe muscle activity of the tibialis anterior and peroneus longus applying Bulgarian split squat was significantly higher than lunge squat. However, the activity of the tibialis posterior showed no significance between squat conditions. Conclusions This study demonstrated that Bulgarian squat was more effective at eliciting ankle dorsiflexor and evertor that are known as important role for ankle stability.Key words Ankle stability; Bulgarian squat; Electromyography; Peroneus longus; Tibialis anterior. Research ReportComparison of Activities of Leg Muscles according to Lunge Squats and Bulgarian Split Squats Journal of KEMA of CAI.11 Previous studies have shown that one leg squat requires more neuromuscular activity due to reduced mediolateral base of support compared to two leg squats. 11-13Increased neuromuscular activity has also been reported to have a positive effect on proprioception and strength in functional activities. [11][12][13] Although many studies have reported that one-leg squat has various advantages in functional activities, no study has studied the effect of muscle activity on ankle stability. Therefore, the objective of this study was to investigate the effect of two types of single-leg squat exercise commonly used in clinical practice for strengthening and rehabilitation of lower limbs on muscles activity of the tibialis anterior (TA), peroneus longus (PL), and tibialis posterior (TP). The hypothesis of this study was that muscle activities of TA, PL, and TP muscles at Bulgarian split squat could be higher than those at lunge squat. METHODSThis study recruited 30 healthy volunteers (15 males, 15 females) who met the selection criteria. Participants were given a detailed explanation of the study procedure. Written informed consent was obtained from each participant. This study was conducted in accordance with principles of the Declaration of Helsinki.Volunteers who were able to maintain single-leg squat posture for longer than 10 s to check shank muscles activity were recruited for this study. Volunteers who had any neurological, musculoskeletal, or cardi...

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Lateral Ankle Sprain and Chronic Ankle Instability

Abstract: Therapeutic Level IV: Review of Level IV studies.

Cited by 116 publications

References 193 publications

Unilateral Eccentric Contraction of the Plantarflexors Leads to Bilateral Alterations in Leg Dexterity

Unilateral Eccentric Contraction of the Plantarflexors Leads to Bilateral Alterations in Leg Dexterity

Exercise and Rehabilitation Principles in Painful Foot and Ankle Problems

Comparison of Activities of Tibialis Anterior, Peroneus Longus, and Tibialis Posterior Muscles according to Lunge Squats and Bulgarian Split Squats in a Healthy Population

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