Hyperactive movement behaviour of athletes with post-concussion symptoms

Area of Science:

• Sports Medicine
• Neuroscience
• Behavioral Analysis

Background:

• Mild traumatic brain injury (mTBI) in sports can lead to varied movement behaviors, including hyperactivity or hypoactivity.
• Previous research lacks systematic, objective analysis of nonverbal movement patterns post-concussion.

Purpose of the Study:

• To experimentally investigate whether symptoms after mTBI in athletes are characterized by hyperactive or hypoactive movement behavior.
• To objectively analyze nonverbal movement patterns in athletes following mTBI.

Main Methods:

• Compared three groups of athletes: symptomatic mTBI, asymptomatic mTBI, and non-concussed controls.
• Utilized a standardized protocol and a nonverbal behavior analysis system to assess hand movement activity, contacts, and resting positions from video recordings.

Main Results:

• Symptomatic athletes displayed significantly more 'act apart' hand movements and less time in closed rest positions compared to controls.
• Post-concussion symptom scores positively correlated with 'act apart' hand movements.
• Act apart hand movements were found to significantly predict post-concussion symptom scores.

Conclusions:

• Symptomatic athletes post-mTBI exhibit hyperactive, restless hand movements.
• Increased 'act apart' hand movements suggest motoric destabilization and potential impairment of inhibitory motor control.
• Systematic analysis of nonverbal movement behavior could serve as a potential marker for mTBI symptoms.