scholarly journals The Correlation Between Ankle Proprioception And Lower Extremity Muscle Reactions In Response To Simulated Lateral Ankle Sprains

2021 ◽  
Author(s):  
Erin Carroll
Keyword(s):  
Lower Extremity ◽  
Ankle Sprains ◽  
Lateral Ankle ◽  
Lower Extremity Muscle ◽  
Ankle Proprioception

scholarly journals Females have a Higher Post-Concussion Subsequent Injury Rate than Male Collegiate Athletes

Neurology ◽  
2019 ◽  
Vol 93 (14 Supplement 1) ◽  
pp. S28.1-S28
Author(s):  
Thomas Buckely ◽  
Jessie Oldham
Keyword(s):  
Lower Extremity ◽  
Student Athletes ◽  
Knee Injuries ◽  
Injury Rate ◽  
Collegiate Athletes ◽  
Elevated Risk ◽  
Lower Extremity Injury ◽  
Ankle Sprains ◽  
Lateral Ankle ◽  
Lower Extremity Muscle

ObjectiveThe purpose of this study is to compare post-concussion lower extremity musculoskeletal (MSK) injury between sexes.BackgroundEmerging evidence suggests that there is an elevated risk of lower extremity MSK injury in the year following concussion. Indeed, we have previously reported a 1.6 –2.9 times elevated risk of lower extremity injury across a diverse population of collegiate student athletes at the conclusion of their athletic careers. However, there are recent and important calls to investigate the role of gender in concussion research and collegiate female student-athletes have elevated risks of specific injuries.Design/MethodsWe recruited 335 student-athletes (62.1% female, mean age, 21.2 ± 1.4 years old) across 13 sports from 17 NCAA member institutions. Participants self-reported concussions under three categories: 1) selfreported concussions, 2) acknowledged unreported concussions (e.g., “hidden”), 3) unrecognized concussions (e.g., memory loss following a head impact). The lower extremity MSK injuries were self-reported 1) lateral ankle sprains, 2) knee sprains, or 3) lower extremity muscle strain. Chi-square analyses identified the association between each of the concussion variables and lower extremity MSK between self-reported sexes.ResultsFor females, there was a significant association between 1) reported concussions and knee injuries (p = 0.018, OR = 2.22, 95% CI: 1.18 – 4.21), 2) unreported concussions and knee injuries (p = 0.005, OR = 3.73, 95% CI: 1.51 – 9.22), 3) unrecognized concussions and lateral ankle sprains (p = 0.007, OR = 2.61, 95% CI: 1.32 – 5.15). For males, there was only a significant association between unrecognized concussions and muscle strains (p = 0.020, odds ratio = 2.39, 95% CI: 1.16 – 4.92).ConclusionsThe results of this study suggest females are at higher risk of post-concussion subsequent MSK injury over the course of their collegiate athletic career. Consistent with recent concussion related findings, these results may highlight a gender difference in concussion response and suggests future studies continue to differentiate gender during analysis.

Lower-Extremity Kinematics During Ankle Inversion Perturbations: A Novel Experimental Protocol That Simulates an Unexpected Lateral Ankle Sprain Mechanism

2019 ◽  
Vol 28 (6) ◽  
pp. 593-600 ◽  
Author(s):  
Jeffrey D. Simpson ◽  
Ethan M. Stewart ◽  
Anastasia M. Mosby ◽  
David M. Macias ◽  
Harish Chander ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Internal Rotation ◽  
Ankle Sprain ◽  
Initial Contact ◽  
Ankle Sprains ◽  
Experimental Protocol ◽  
Lateral Ankle Sprain ◽  
Lateral Ankle ◽  
Ankle Inversion ◽  
Tilted Surface

Context: Lateral ankle sprains are a common injury in which the mechanics of injury have been extensively studied. However, the anticipatory mechanisms to ankle inversion perturbations are not well understood. Objective: To examine lower-extremity kinematics, including spatial and temporal variables of maximum inversion displacement and maximum inversion velocity, during landings on a tilted surface using a new experimental protocol to replicate a lateral ankle sprain. Setting: Three-dimensional motion analysis laboratory. Participants: A total of 23 healthy adults. Interventions: Participants completed unexpected (UE) and expected (EXP) unilateral landings onto a tilted surface rotated 25° in the frontal plane from a height of 30 cm. Main Outcome Measures: Ankle, knee, and hip kinematics at each discrete time point from 150 ms pre-initial contact (IC) to 150 ms post-IC, in addition to maximum ankle inversion and maximum inversion velocity, were compared between UE and EXP landings. Results: The UE landing produced significantly greater maximum inversion displacement (P < .01) and maximum inversion velocity (P = .02) than the EXP landing. Significantly less ankle inversion and internal rotation were found during pre-IC, whereas during post-IC, significantly greater ankle inversion, ankle internal rotation, knee flexion, and knee abduction were observed for the UE landing (P < .05). In addition, significantly less hip flexion and hip adduction were observed for the UE landing during pre-IC and post-IC (P < .05). Conclusions: Differences in the UE and EXP landings indicate the experimental protocol presented a UE inversion perturbation that approximates the mechanism of a lateral ankle sprain. Furthermore, knowledge of the inversion perturbation elicited a hip-dominant strategy, which may be utilized to assist with ankle joint stabilization during landing to further protect the lateral ankle from injury.

scholarly journals Lower extremity muscle power – A critical determinant of physical function in aging and multiple sclerosis

2021 ◽  
pp. 111347
Author(s):  
Rasmus A.W. Stagsted ◽  
Cintia Ramari ◽  
Anders G. Skjerbaek ◽  
Cecilie Thrue ◽  
Ulrik Dalgas ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Lower Extremity ◽  
Physical Function ◽  
Muscle Power ◽  
Critical Determinant ◽  
Lower Extremity Muscle

scholarly journals Long-term participation in community group exercise improves lower extremity muscle strength and delays age-related declines in walking speed and physical function in older adults

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Chisato Hayashi ◽  
Soshiro Ogata ◽  
Tadashi Okano ◽  
Hiromitsu Toyoda ◽  
Sonoe Mashino
Keyword(s):  
Older Adults ◽  
Muscle Strength ◽  
Physical Exercise ◽  
Lower Extremity ◽  
Physical Function ◽  
Community Dwelling ◽  
Group Exercise ◽  
Community Based ◽  
Lower Extremity Muscle

Abstract Background The effects of group exercise on the physical function of community-dwelling older adults remain unclear. The changes in lower extremity muscle strength, timed up and go (TUG) time, and the motor fitness scale (MFS), over time, among older adults who expressed a willingness to participate in community-based physical exercise groups, were determined using multilevel modelling. Methods We analyzed data of 2407 older adults between April 2010 and December 2019 from the registry of physical tests of community-based physical exercise groups. We conducted a retrospective cohort study to assess the effect of physical exercise on lower extremity muscle strength, TUG time, and MFS scores. The durations of the exercises were evaluated by frequency of physical test’s participate. Results A deterioration in lower extremity muscle strength was found in the short-term participant group only. However, in the mid-term and long-term participation groups, lower extremity muscle strength showed a trend of improvement. The TUG time and the MFS score were negatively correlated with increasing age in both groups divided by the duration of participation. However, there was a slower rate of deterioration in the long-term participation group. Discussion Lower extremity muscle strength, TUG time, and MFS scores decline with increasing age and there were differences in the slope of deterioration that depended on the duration of participation in community-based group exercise. Conclusion Participation in group exercise improved lower extremity muscle strength, TUG time, and MFS scores of older adults living in a community. The positive effects of group exercise were dependent on long-term participation.

scholarly journals Predictive Factors of Recovery after an Acute Lateral Ankle Sprain: A Longitudinal Study

Sports ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 41
Author(s):  
Philippe Terrier ◽  
Sébastien Piotton ◽  
Ilona M. Punt ◽  
Jean-Luc Ziltener ◽  
Lara Allet
Keyword(s):  
Ankle Sprain ◽  
Strength Function ◽  
Selection Procedure ◽  
Ankle Sprains ◽  
Lateral Ankle Sprain ◽  
Lateral Ankle ◽  
Functional Scores ◽  
Logistic Regressions ◽  
Poor Outcomes ◽  
Clinical Measures

A prominent feature of ankle sprains is their variable clinical course. The difficulty of providing a reliable early prognosis may be responsible for the substantial rate of poor outcomes after an ankle sprain. The aim of the present study was to evaluate the prognostic value of objective clinical measures, pain, and functional scores for ankle sprain recovery. Fifty-two participants suffering from lateral ankle sprain were included. Sprain status was assessed four weeks following injury and included evaluations of ankle range of motion, strength, function, and pain. Seven months following injury, a second assessment classified the patients into recovered and non-recovered groups using ankle ability measures. Following a predictor pre-selection procedure, logistic regressions evaluated the association between the four-week predictors and the seven-month recovery status. Twenty-seven participants (52%) fully recovered and 25 did not (48%). The results of the logistic regressions showed that walking pain was negatively associated with the probability of recovering at seven months (odds ratio: 0.71, 95% CI: 0.53–0.95). Pain four weeks after ankle sprain had relevant predictive value for long-term recovery. Special attention should be paid to patients reporting persistent pain while walking four weeks following sprain to reduce the risk of chronicity.

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