Abstract:
CONTEXT:Neuromuscular dysfunction of the leg and thigh musculature, including decreased strength and postural control, is common in patients with chronic ankle instability (CAI). Understanding how CAI affects specific neural pathways may provide valuable information for targeted therapies. OBJECTIVE:To investigate differences in spinal reflexive and corticospinal excitability of the fibularis longus and vastus medialis between limbs in patients with unilateral CAI and between CAI patients and participants serving as healthy controls. DESIGN:Case-control study. SETTING:Research laboratory. PATIENTS OR OTHER PARTICIPANTS:A total of 56 participants volunteered, and complete data for 21 CAI patients (9 men, 12 women; age = 20.81 ± 1.63 years, height = 171.57 ± 11.44 cm, mass = 68.84 ± 11.93 kg) and 24 healthy participants serving as controls (7 men, 17 women; age = 22.54 ± 2.92 years, height = 172.35 ± 10.85 cm, mass = 69.15 ± 12.30 kg) were included in the final analyses. Control participants were matched to CAI patients on sex, age, and limb dominance. We assigned "involved" limbs, which corresponded with the involved limbs of the CAI patients, to control participants. MAIN OUTCOME MEASURE(S):Spinal reflexive excitability was assessed via the Hoffmann reflex and normalized to a maximal muscle response. Corticospinal excitability was assessed using transcranial magnetic stimulation. Active motor threshold (AMT) was defined as the lowest transcranial magnetic stimulation intensity required to elicit motor-evoked potentials equal to or greater than 100 μV in 5 of 10 consecutive stimuli. We obtained motor-evoked potentials (MEPs) at percentages ranging from 100% to 140% of AMT. RESULTS:Fibularis longus MEP amplitudes were greater in control participants than in CAI patients bilaterally at 100% AMT (control involved limb: 0.023 ± 0.031; CAI involved limb: 0.014 ± 0.008; control uninvolved limb: 0.021 ± 0.022; CAI uninvolved limb: 0.015 ± 0.007; F1,41 = 4.551, P = .04) and 105% AMT (control involved limb: 0.029 ± 0.026; CAI involved limb: 0.021 ± 0.009; control uninvolved limb: 0.034 ± 0.037; CAI uninvolved limb: 0.023 ± 0.013; F1,35 = 4.782, P = .04). We observed no differences in fibularis longus MEP amplitudes greater than 110% AMT and no differences in vastus medialis corticospinal excitability (P > .05). We noted no differences in the Hoffmann reflex between groups for the vastus medialis (F1,37 = 0.103, P = .75) or the fibularis longus (F1,41 = 1.139, P = .29). CONCLUSIONS:Fibularis longus corticospinal excitability was greater in control participants than in CAI patients.
journal_name
J Athl Trainjournal_title
Journal of athletic trainingauthors
McLeod MM,Gribble PA,Pietrosimone BGdoi
10.4085/1062-6050-50.4.06subject
Has Abstractpub_date
2015-08-01 00:00:00pages
847-53issue
8eissn
1062-6050issn
1938-162Xjournal_volume
50pub_type
杂志文章abstract::OBJECTIVE: To compare the effectiveness of Nature's Chemist as an ultrasound coupling agent with the effectiveness of another topical analgesic (Biofreeze), Aquasonic 100, and a sham treatment in producing intramuscular (IM) temperature increase during a typical therapeutic ultrasound treatment. DESIGN AND SETTING: Su...
journal_title:Journal of athletic training
pub_type: 杂志文章
doi:
更新日期:2001-03-01 00:00:00
abstract:CONTEXT:Quadriceps weakness is associated with disability and aberrant gait biomechanics following anterior cruciate ligament reconstruction (ACLR). Strength sufficiency cutoff scores, that normalize quadriceps strength to the mass of an individual, are capable of predicting individuals who will report better function ...
journal_title:Journal of athletic training
pub_type: 杂志文章
doi:10.4085/425-20
更新日期:2021-01-22 00:00:00
abstract::OBJECTIVE: To establish a time profile to determine how athletic training students use their time in clinical placements and to determine the effects of academic standing, sex, sport type, and risk of injury associated with a sport during athletic training students' clinical placements on instructional, clinical, unen...
journal_title:Journal of athletic training
pub_type: 杂志文章
doi:
更新日期:2002-12-01 00:00:00
abstract:REFERENCE/CITATION:Calvert E, Chambers GK, Regan W, Hawkins RH, Leith JM. Special physical examination tests for superior labrum anterior-posterior shoulder injuries are clinically limited and invalid: a diagnostic systematic review. J Clin Epidemiol. 2009;62(5):558-563. CLINICAL QUESTION:The systematic review focused...
journal_title:Journal of athletic training
pub_type: 评论,杂志文章
doi:10.4085/1062-6050-48.3.14
更新日期:2013-11-01 00:00:00
abstract:CONTEXT:Sport specialization has been defined as year-round intensive training in a single sport to the exclusion of other sports. A commonly used survey tool created by Jayanthi et al, which classifies athletes as having a low, moderate, or high level of specialization, categorizes only athletes answering yes to "Have...
journal_title:Journal of athletic training
pub_type: 杂志文章
doi:10.4085/1062-6050-379-18
更新日期:2019-10-01 00:00:00
abstract::The efficacy of prophylactic knee bracing has been refuted with regard to reducing the incidence and/or severity of injuries to the knee joint. This is thought to be a result of the prophylactic knee brace's ineffectiveness in protecting the knee joint from valgus loads. Furthermore, discrepancies exist regarding the ...
journal_title:Journal of athletic training
pub_type: 杂志文章
doi:
更新日期:1993-01-01 00:00:00
abstract:CONTEXT: Diminished hip-abductor strength has been suggested to increase the risk of noncontact lateral ankle sprains. OBJECTIVE: To determine prospectively whether baseline hip-abductor strength predicts future noncontact lateral ankle sprains in competitive male soccer players. DESIGN: Prospective cohort study. ...
journal_title:Journal of athletic training
pub_type: 杂志文章
doi:10.4085/1062-6050-52.11.18
更新日期:2017-11-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
doi:10.4085/1062-6050-0302.19
更新日期:2020-11-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
doi:10.4085/1062-6050-43.1.29
更新日期:2008-01-01 00:00:00
abstract:OBJECTIVE:To provide an overview of the continuum of muscular responses that typically occur with joint perturbation. The applications and limitations of surface electromyography (sEMG) in evaluating these responses are also addressed. Research applications assessing sex differences in these neuromuscular response char...
journal_title:Journal of athletic training
pub_type: 杂志文章
doi:
更新日期:1999-04-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
doi:10.4085/1062-6050-173-17
更新日期:2018-10-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
doi:10.4085/1062-6050-0387.19
更新日期:2020-09-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
doi:10.4085/1062-6050-52.2.03
更新日期:2017-06-02 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
doi:10.4085/1062-6050-44.3.249
更新日期:2009-05-01 00:00:00
abstract:CONTEXT: Seventy-seven percent of musculoskeletal injuries sustained by United States Army Special Forces Operators are preventable. Identification of predictive characteristics will promote the development of screening methods to augment injury-prevention programs. OBJECTIVE: To determine physical and performance c...
journal_title:Journal of athletic training
pub_type: 杂志文章
doi:10.4085/1062-6050-52.12.22
更新日期:2017-12-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
doi:10.4085/1062-6050-44.2.160
更新日期:2009-03-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
doi:10.4085/1062-6050-331-17
更新日期:2018-12-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
doi:
更新日期:2006-10-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章,随机对照试验
doi:10.4085/1062-6050-51.1.01
更新日期:2015-12-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
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更新日期:2015-01-01 00:00:00
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pub_type: 杂志文章
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journal_title:Journal of athletic training
pub_type: 杂志文章
doi:
更新日期:1997-01-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
doi:10.4085/1062-6050-52.3.16
更新日期:2017-08-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
doi:
更新日期:1995-06-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
doi:
更新日期:1998-01-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
doi:10.4085/1062-6050-49.2.15
更新日期:2014-03-01 00:00:00
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journal_title:Journal of athletic training
pub_type: 杂志文章
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更新日期:2013-09-01 00:00:00