KNES 505 Concussion: Exertion Testing and Buffalo Protocols

What was the purpose of the First Concussion in Sport Group (CISG) Consensus meeting held in Vienna in 2001?

To establish guidelines for the management and rehabilitation of concussions in sports.

What are the first two steps in the Return-to-Play (RTP) management after a concussion?

1. No activity, complete rest; 2. Light aerobic activity (walking or stationary cycling).

What is the Buffalo Concussion Treadmill Test used for?

To assess the effects of exercise on concussion symptoms and recovery.

What does the Monro-Kellie Doctrine state about the brain?

The brain is enclosed in a non-expandable case of bone, and the volume of blood in the cranial cavity is constant.

What is a significant symptom that often worsens due to rotational effects after a concussion?

Headache.

What is the relationship between cerebral blood flow (CBF) and concussion symptoms during submaximal exercise?

An increase in CBF can exacerbate symptoms like headaches.

How does exercise influence recovery from concussion according to emerging data?

Exercise improves brain function via favorable effects on neuroplasticity.

What is the impact of deconditioning on concussion recovery?

Deconditioning adversely affects the autonomic nervous system, cerebral blood flow, neuroplasticity, psychology/mood, and sleep patterns.

What is the significance of the hazard ratio in concussion recovery studies?

It compares recovery rates between different groups, indicating how much faster one group recovers than another.

What does the term 'cerebrovascular regulation' refer to in the context of concussion?

The body's ability to regulate blood flow to the brain, which can be disturbed after a concussion.

What is the effect of exercise on adolescents recovering from concussion?

Abnormal cerebral blood flow may persist for weeks after injury despite resolution of resting symptoms.

What are the potential consequences of impaired neurovascular coupling (NVC) after a concussion?

Subtle alterations in NVC parameters can lead to increased nutrient requirements for brain tasks.

What is the role of the autonomic nervous system (ANS) in concussion recovery?

Altered ANS balance can lead to higher heart rates during exercise in concussed athletes.

What does the term 'symptom-specific' refer to in concussion studies?

It indicates the assessment of individual physical symptoms reported by patients during recovery.

What is the purpose of compliance with physical and cognitive rest recommendations after a concussion?

To facilitate recovery and prevent exacerbation of symptoms.

What is the relationship between exercise intensity and recovery time after a concussion?

Moderate to vigorous exercise levels can influence the time to recovery.

What did Alexander Monro conclude about the brain's capacity to expand?

The brain does not expand or contract like a lung; it is nearly incompressible.

What factors contribute to symptom exacerbation during exercise following a concussion?

Increased cerebral blood flow and the severity of symptoms like headaches.

What is the significance of the Buffalo Concussion Bike Test?

It is used to assess the effects of cycling on concussion recovery and symptoms.

What is indicated by the term 'inverted U' in the context of concussion and physical activity?

It suggests that there is an optimal level of activity for recovery, beyond which symptoms may worsen.

What is the role of carbon dioxide (CO2) regulation in cerebral blood flow after a concussion?

CO2 tension is a primary regulator of cerebral blood flow, which may be altered after a concussion.

What does the term 'PPCS' stand for in concussion research?

Post-Concussion Syndrome.

What is the primary focus of the study by Danny George Thomas et al. published in Pediatrics?

To analyze compliance with physical and cognitive rest recommendations after a concussion.

What is the effect of exercise on mood and psychology in concussion recovery?

Exercise can have positive effects on mood and psychological well-being during recovery.

What are the potential long-term effects of concussion on adolescents?

Abnormal cerebral blood flow and autonomic dysfunction may persist long after injury.

What is the significance of self-reported diaries in concussion recovery studies?

They provide insights into activity levels and compliance with recovery protocols.

What is the recommended duration and intensity of moderate aerobic exercise for cognitive protection?

150 minutes per week at 60% of maximum heart rate.

What neurotrophic factor is associated with regular exercise and neuron repair?

Brain-derived neurotrophic factor (BDNF).

How does regular exercise affect cerebral blood flow (CBF)?

It improves regulation of CBF.

What is a common consequence of physical deconditioning due to prolonged rest in TBI patients?

Reduced cerebral blood flow (CBF).

What is the purpose of the Buffalo Concussion Treadmill Test (BCTT)?

To assess exercise tolerance and prescribe individualized exercise for patients with post-concussion syndrome (PPCS).

What are the contraindications for performing the BCTT?

Conditions that typically contraindicate a cardiac stress test.

What is the starting speed and incline for the BCTT?

Starting speed is 3.2 mph at 0% incline.

How is the incline adjusted during the BCTT?

Increased by 1% each minute until a maximum of 15% is reached.

What is the threshold for stopping the BCTT test?

A greater than 2-point increase in overall condition or specific symptoms.

What is the Borg scale used for in the BCTT?

To assess the rating of perceived exertion (RPE) and symptoms every minute.

What is the maximum heart rate (HR) threshold during the BCTT?

HR should not exceed 90% of HRmax.

What adaptations were made to the BCTT for cyclists?

The Calgary Concussion Cycle Test (CCCT) was developed to provide a similar CBF response.

What is the starting resistance for the cycling protocol in the CCCT?

Starts at 60 rpm with resistance increased every 2 minutes.

What physiological responses are measured during the CARE test?

Cerebral blood flow (CBF), CO2 response, and blood pressure.

What were the findings regarding sex-specific differences in youth during the CARE test?

Differences in CBF response and heart rate were noted pre/post puberty.

What is the significance of using exertion tests like BCTT and CCCT?

They help determine if symptoms following concussion are physiological in nature.

How does exercise affect neuroplasticity in concussion recovery?

It upregulates brain-derived neurotrophic factor (BDNF) which supports neuroplasticity.

What psychological benefits are associated with regular exercise?

Improves mood and aids in sleep timing and duration.

What is the relationship between exercise and autonomic nervous system function?

Exercise improves autonomic nervous system function.

What is the maximum incline reached during the BCTT?

15% incline.

What is the purpose of measuring heart rate and blood pressure during the BCTT?

To monitor cardiovascular response and ensure safety during exercise.

What is the significance of the Borg scale in the context of exercise testing?

It provides a subjective measure of exertion and helps gauge patient tolerance.

What is the expected outcome of regular exercise on sleep patterns?

Aids in improving sleep timing and duration.

What is the role of exercise in restoring autonomic balance in TBI patients?

Exercise training has beneficial effects on CBF control and autonomic balance.

What is the expected heart rate response in males versus females during exertion testing?

Males and females show different heart rate responses, with males generally having higher rates.

What is the significance of a >2 point increase in symptoms during the BCTT?

It indicates a need to stop the test due to potential exacerbation of symptoms.

What is the main goal of the Calgary Adapted aRm Ergometer (CARE) test?

To compare physiological responses to the Calgary Concussion Cycle Test.