Increased short interval intracortical inhibition in participants with previous hamstring strain injury

Buhmann, Robert L.; Trajano, Gabriel S.; Kerr, Graham; Shield, Anthony

doi:10.1007/s00421-021-04839-6

Cited by 10 publications

(3 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such alterations have been observed in ACL rupture, 6 7 tendinopathy 8 and hamstring muscle strain injury. 9 However, observed changes appear non-uniform across studies and the direct impacts on muscle force production are difficult to decipher. Comparisons to healthy individuals suggest that altered excitability is either a potential mediating factor in, or consequence of poor muscle function and activation given the differences between groups.…”

Section: Altered Motor Drivementioning

confidence: 99%

Maximising neuromuscular performance in people with pain and injury: moving beyond reps and sets to understand the challenges and embrace the complexity

Murphy,

Rio,

Whife

et al. 2024

BMJ Open Sport Exerc Med

View full text Add to dashboard Cite

Rehabilitative practice is often criticised for being non-individualised, monotonous and not well aligned with foundational principles that drive continued physiological adaptation(s). However, our understanding of neuromuscular physiology is rapidly increasing and the way we programme rehabilitation is improving. This viewpoint highlights some of the potential considerations around why the adaptations achieved during rehabilitation programmes may be suboptimal. We provide basic, clinician-focused discussion about potential confounding physiological factors, and put forward several exercise-based programming recommendations and novel approaches to consider in contemporary rehabilitative practice. Specifically, we outline several potential mechanisms contributing to poor muscle activation and function that might be present following musculoskeletal injury. However, clinicians require strategies capable of attenuating these impairments to restore proper function. Therefore, we also provide an overview of recommended strength and conditioning guidelines, and novel strategies (such as external pacing and electrical stimulation techniques) that clinicians can consider to potentially improve the efficacy of musculoskeletal rehabilitation.

show abstract

Section: Altered Motor Drivementioning

confidence: 99%

Maximising neuromuscular performance in people with pain and injury: moving beyond reps and sets to understand the challenges and embrace the complexity

Murphy,

Rio,

Whife

et al. 2024

BMJ Open Sport Exerc Med

View full text Add to dashboard Cite

show abstract

“…Stimulations were manually delivered via TMS using two Magstim 200 2 (Carroll et al, 2001) stimulators connected via a Bi-stim unit while using a double-cone coil (110 mm external loop diameter; Magstim Co, The Magstim Company, Whitland, UK). The coil was placed on the contralateral hemisphere (Buhmann et al, 2022) to induce MEPs in the biceps femoris on the dominant leg (i.e., the left hemisphere was stimulated to elicit MEPs in the right biceps femoris). All stimuli were applied during low-level muscle activity which equated to 5% AE 2% of maximal isometric rmsEMG recorded during the same session.…”

Section: Tmsmentioning

confidence: 99%

Reliability of corticospinal excitability and intracortical inhibition in biceps femoris during different contraction modes

Presland

Tofari

Timmins

et al. 2022

Eur J of Neuroscience

View full text Add to dashboard Cite

This study aimed to determine the test–retest reliability of a range of transcranial magnetic stimulation (TMS) outcomes in the biceps femoris during isometric, eccentric and concentric contractions. Corticospinal excitability (active motor threshold 120% [AMT120%] and area under recruitment curve [AURC]), short‐ and long‐interval intracortical inhibition (SICI and LICI) and intracortical facilitation (ICF) were assessed from the biceps femoris in 10 participants (age 26.3 ± 6.0 years; height 180.2 ± 6.6 cm, body mass 77.2 ± 8.0 kg) in three sessions. Single‐ and paired‐pulse stimuli were delivered under low‐level muscle activity (5% ± 2% of maximal isometric root mean squared surface electromyography [rmsEMG]) during isometric, concentric and eccentric contractions. Participants were provided visual feedback on their levels of rmsEMG during all contractions. Single‐pulse outcomes measured during isometric contractions (AURC, AMT110%, AMT120%, AMT130%, AMT150%, AMT170%) demonstrated fair to excellent reliability (ICC range, .51 to .92; CV%, 21% to 37%), whereas SICI, LICI and ICF demonstrated good to excellent reliability (ICC range, .62 to .80; CV%, 19 to 42%). Single‐pulse outcomes measured during concentric contractions demonstrated excellent reliability (ICC range, .75 to .96; CV%, 15% to 34%), whereas SICI, LICI and ICF demonstrated good to excellent reliability (ICC range, .65 to .76; CV%, 16% to 71%). Single‐pulse outcomes during eccentric contractions demonstrated fair to excellent reliability (ICC range, .56 to .96; CV%, 16% to 41%), whereas SICI, LICI and ICF demonstrated good to excellent (ICC range, .67 to .86; CV%, 20% to 42%). This study found that both single‐ and paired‐pulse TMS outcomes can be measured from the biceps femoris muscle across all contraction modes with fair to excellent reliability. However, coefficient of variation values were typically greater than the smallest worthwhile change which may make tracking physiological changes in these variables difficult without moderate to large effect sizes.

show abstract

“…Maladaptive changes in corticomotor pathways are hypothesized to contribute toward injury recurrence by promoting abnormal movement patterns that detrimentally alter soft tissue loading (Hodges & Tucker, 2011). Observations of neuromuscular inhibition and deficits in proprioceptive processing following musculoskeletal injury support potential cortical adaptations to acute and chronic pain (Buhmann et al, 2022;Fyfe et al, 2013;Summers et al, 2021). Specific patterns of pain-induced corticomotor reorganization may be associated with poorer outcomes over time.…”

Section: Introductionmentioning

confidence: 99%

Investigating interindividual variability in corticomotor reorganization during sustained hamstring pain: A randomized experimental study

et al. 2023

View full text Add to dashboard Cite

Background: Increasing evidence suggests that pain drives maladaptive corticomotor changes that may increase susceptibility to injury and promote symptom recurrence.However, few studies have evaluated the influence of interindividual corticomotor responses to musculoskeletal pain. Existing research in this area has also been limited largely to the upper limb. This is a pertinent point, given the functional and neurophysiological differences between upper and lower limb muscles, as well as the fact that most acute sporting injuries occur in the lower limb. Accordingly, this study explored the variability of corticomotor responses to experimentally-induced sustained hamstring pain and whether specific patterns of corticomotor reorganization were associated with poorer outcomes (mechanical sensitivity, pain, or functional limitation).Method: Thirty-six healthy individuals participated. Following random allocation on Day 0, the experimental group performed an eccentric exercise protocol of the right hamstring muscles to induce delayed onset muscle soreness. The control group performed repetition-matched concentric exercise that did not induce soreness. Measures of mechanical sensitivity, pain, function, and corticomotor organization were collected at baseline and on Day 2. Results and conclusions:Corticomotor responses to sustained hamstring pain were variable. Individuals who developed corticomotor facilitation in response to hamstring pain experienced greater mechanical sensitivity than those who developed corticomotor depression. These novel data could have implications for rehabilitation following lower limb pain or injury.

show abstract

Increased short interval intracortical inhibition in participants with previous hamstring strain injury

Cited by 10 publications

References 47 publications

Maximising neuromuscular performance in people with pain and injury: moving beyond reps and sets to understand the challenges and embrace the complexity

Maximising neuromuscular performance in people with pain and injury: moving beyond reps and sets to understand the challenges and embrace the complexity

Reliability of corticospinal excitability and intracortical inhibition in biceps femoris during different contraction modes

Investigating interindividual variability in corticomotor reorganization during sustained hamstring pain: A randomized experimental study

Contact Info

Product

Resources

About