RESEARCH SUMMARY

  • Title: The role of neuromuscular inhibition in hamstring strain injury recurrence

  • Author/s: Fyfe (@jacksonfyfe) Opar (@davidopar), Williams (@drmorgs), Shield (@das_shield)

  • Year: 2013

  • Question: What is neuromuscular inhibition and what’s it role in HSI?

  • Key Takeaway: It is proposed that NMI may be caused predominantly by the experience of pain.  NMI effects appear to persist significantly post-HSI, and also seem to correlate with worsening of other risk factors.  However, more work is required to determine if this is causal, and if so, what the causal mechanism is.

  • Summary: What is the missing piece of the puzzle? Why are many HSIs recurring injuries? Could it potentially be a coping mechanism by the nervous systems? The paper introduces the framework and the underpinnings of the neuromuscular inhibition post HIS and rehabilitation.

    Key Findings:

    • The persistence of risk factors and the development of maladaptations following hamstring strain injury may explain injury recurrence.
    • It is proposed that pain-driven neuromuscular inhibition of hamstring voluntary activation occurs following hamstring strain injury
    • This inhibition has a detrimental effect on hamstring recovery by limiting hamstring exposure to eccentric stimuli at long muscle lengths during rehabilitative exercise.