STATIC BALANCE IN INDIVIDUALS WITH POST-CONCUSSION SYNDROME

A concussion is an injury to the brain caused by linear and/or rotational forces applied to the head. The majority of concussions typically resolve spontaneously within a period of 7-10 days. In 10-20% of individuals, however, the symptoms persist beyond 10 days and are termed post-concussion syndrome (PCS). The purpose of this pilot study was to evaluate the effects of a supervised and structured four-week aerobic and balance exercise program on static balance measures in a sample of individuals with PCS. Statistically significant changes in velocity and length of centre of pressure during balancing tasks were observed in response to the exercise program. These improvements in balance and symptoms suggest that further research into the benefits of exercise based treatment for improving balance deficits associated with PCS is warranted

THE EFFECTS OF EXERCISE ON COGNITIVE FUNCTION, AND BALANCE IN HEALTHY INDIVIDUALS - A PILOT STUDY

Concussion is defined as an injury to the brain caused by forces applied to the head. Approximately 10-20% of concussed individuals develop post-concussion syndrome (PCS), characterized by persistent symptoms beyond 10 days including balance and cognitive deficits. The purpose of this pilot study was to explore the effect of a four-week exercise program on physiological, cognitive, and balance variables in a sample of healthy, physically active individuals to gather preliminary information to apply to a future PCS population. Statistically significant changes in reaction time and balance measures were observed. No changes in heart rate, blood pressure, memory, or visual motor speed were observed. Balance improvements in this healthy sample suggest that future exploration of a similar exercise program in those experiencing PCS may provide valuable information

Preliminary Evidence for the Clinical Utility of Tactile Somatosensory Assessments of Sport-Related mTBI

Objectives: To evaluate the clinical utility of tactile somatosensory assessments to assist clinicians in diagnosing sport-related mild traumatic brain injury (SR-mTBI), classifying recovery trajectory based on performance at initial clinical assessment, and determining if neurophysiological recovery coincided with clinical recovery.Research Design: Prospective cohort study with normative controls. Methods: At admission (n = 79) and discharge (n = 45/79), SR-mTBI patients completed the SCAT-5 symptom scale, along with the following three components from the Cortical Metrics Brain Gauge somatosensory assessment (BG-SA): temporal order judgement (TOJ), TOJ with confounding condition (TOJc), and duration discrimination (DUR). To assist SR-mTBI diagnosis on admission, BG-SA performance was used in logistic regression to discriminate cases belonging to the SR-mTBI sample or a healthy reference sample (pooled BG-SA data for healthy participants in previous studies). Decision trees evaluated how accurately BG-SA performance classified SR-mTBI recovery trajectories. Results: BG-SA TOJ, TOJc, and DUR poorly discriminated between cases belonging to the SR-mTBI sample or a healthy reference sample (0.54–0.70 AUC, 47.46–64.71 PPV, 48.48–61.11 NPV). The BG-SA evaluated did not accurately classify SR-mTBI recovery trajectories (> 14-day resolution 48%, ≤14–day resolution 54%, lost to referral/follow-up 45%). Mann-Whitney U tests revealed differences in BG-SA TOJc performance between SR-mTBI participants and the healthy reference sample at initial clinical assessment and at clinical recovery ( 14-day resolution 48%, ≤14–day resolution 54%, lost to referral/follow-up 45%). Mann-Whitney U tests revealed differences in BG-SA TOJc performance between SR-mTBI participants and the healthy reference sample at initial clinical assessment and at clinical recovery (p Conclusions: BG-SA TOJ, TOJc, and DUR appear to have limited clinical utility to assist clinicians with diagnosing SR-mTBI or predicting recovery trajectories under ecologically valid conditions. Neurophysiological abnormalities persisted beyond clinical recovery given abnormal BG-SA TOJc performance observed when SR-mTBI patients achieved clinical recovery

Is it really the result of a concussion? Lessons from a case study

Abstract Background Within the last two decades, attitudes have shifted from considering sports-related concussion as an insignificant minor injury with no long-term repercussions to a potentially serious brain injury garnering attention from media, clinicians, researchers, and the general public. Objectives To conduct a case study to determine the underlying cause of persistent issues suspected to be associated with a history of sports-related concussion. Protocol Participant A underwent neurophysiological testing following the Neary protocol (assessment of cerebrovascular and cardiovascular variables), comprehensive concussion assessment at a dedicated sports concussion clinic (history, neurological assessment, cervical spine screening, vestibulo-ocular screening, SCAT-5, and exercise testing), referral to a neurologist, structural MRI scan, and referral for specialised assessment at a dedicated dizziness and balance centre. Results Despite a history of multiple sports-related concussions, Participant A’s persistent symptom reports were associated with peripheral vestibular dysfunction and otolithic dysfunction seemingly unrelated to his concussion history. Discussion Lessons from Participant A’s case study showed that on-going symptoms that patients may associate with the effects of concussions may instead be due to unrelated causes that share similar symptomology. Conclusion This research exemplifies the importance of a multi-disciplinary assessment using a repeated testing protocol

Physical activity in physical education, is it that difficult to achieve?

More often than not, it is just assumed that children will amass the critical amount of moderate to vigorous physical activity in their daily activities and in the process offset disorders associated with sedentary behavior. Again, more often than not, Health and Physical Education is unfairly projected as the intervention – not the site of possible interventions but THE intervention. However, there are a great deal of environmental and contextual constraints that HPE teachers must overcome if they are to make meaningful and sustainable contributions to societies response to the increasing rates of sedentary behaviors lifestyle disorders such as overweight/obesity. This presentation will share the research findings from a Physical Activity intervention delivered in four Vietnamese Primary Schools

A Novel Method to Assist Clinical Management of Mild Traumatic Brain Injury by Classifying Patient Subgroups Using Wearable Sensors and Exertion Testing: A Pilot Study

Although injury mechanisms of mild traumatic brain injury (mTBI) may be similar across patients, it is becoming increasingly clear that patients cannot be treated as one homogenous group. Several predominant symptom clusters (PSC) have been identified, each requiring specific and individualised treatment plans. However, objective methods to support these clinical decisions are lacking. This pilot study explored whether wearable sensor data collected during the Buffalo Concussion Treadmill Test (BCTT) combined with a deep learning approach could accurately classify mTBI patients with physiological PSC versus vestibulo-ocular PSC. A cross-sectional design evaluated a convolutional neural network model trained with electrocardiography (ECG) and accelerometry data. With a leave-one-out approach, this model classified 11 of 12 (92%) patients with physiological PSC and 3 of 5 (60%) patients with vestibulo-ocular PSC. The same classification accuracy was observed in a model only using accelerometry data. Our pilot results suggest that adding wearable sensors during clinical tests like the BCTT, combined with deep learning models, may have the utility to assist management decisions for mTBI patients in the future. We reiterate that more validation is needed to replicate the current results

Diagnosis of Delayed Post-Hypoxic Leukoencephalopathy (Grinker’s Myelinopathy) with MRI Using Divided Subtracted Inversion Recovery (dSIR) Sequences: Time for Reappraisal of the Syndrome?

Background: Delayed Post-Hypoxic Leukoencephalopathy (DPHL), or Grinker’s myelinopathy, is a syndrome in which extensive changes are seen in the white matter of the cerebral hemispheres with MRI weeks or months after a hypoxic episode. T2-weighted spin echo (T2-wSE) and/or T2-Fluid Attenuated Inversion Recovery (T2-FLAIR) images classically show diffuse hyperintensities in white matter which are thought to be near pathognomonic of the condition. The clinical features include Parkinsonism and akinetic mutism. DPHL is generally regarded as a rare condition. Methods and Results: Two cases of DPHL imaged with MRI nine months and two years after probable hypoxic episodes are described. No abnormalities were seen on the T2-FLAIR images with MRI, but very extensive changes were seen in the white matter of the cerebral and cerebellar hemisphere on divided Subtraction Inversion Recovery (dSIR) images. dSIR sequences may produce ten times the contrast of conventional inversion recovery (IR) sequences from small changes in T1. The clinical findings in both cases were of cognitive impairment without Parkinsonism or akinetic mutism. Conclusion: The classic features of DPHL may only represent the severe end of a spectrum of diseases in white matter following global hypoxic injury to the brain. The condition may be much more common than is generally thought but may not be recognized using conventional clinical and MRI criteria for diagnosis. Reappraisal of the syndrome of DPHL to include clinically less severe cases and to encompass recent advances in MRI is advocated