Test 2 Flashcards
Exercise and response in cardiac output
Direct relationship
Exercise and response in Vo2 (Oxygen uptake)
Direct correlation
Increase with exercise
Vo2 max does what with training
Increases
The amount of oxygen that can be taken in and utilized per kg/min
EPOC
Excess post-exercise oxygen consumption
Due to initial depletion when starting the exercise
RQ
Volume of CO2 expired: volume of oxygen consumed
What is RQ an indicator of
Metabolic fuel use in the tissues
Carb 1
Lipid 0.7
Protein 0.8
Usually only fat and carbs are used to calculate
Exercise and response in RQ
Increases with exercise
Changes in BP with dynamic, low force exercise
Increase in systolic
No change in diastolic BP
***good predictor of CAD if diastole increases
Increase in diastole BP during dynamic, low force exercise is a good predictor of what? How much of a change is significant?
CAD
> 15mmHG or above 110mmHG
Weight lifting and BP
Systolic and diastolic pressure increase.
Systolic of 450mmHg have been reported
total peripheral resistance and local factors (CO2/lactate)
CO2/lactate cause dilation in the working muscles and decrease TPR
Lactate threshold
Point during exercise where lactic acid begins to accumulate in the blood
Max level of sustained activity
How do you know you’re at the lactate threshold
Can carry on a conversation but cannot sing
Vo2 max level and lactate threshold start
Around 60% vo2 max is when lactate starts to increase in the body
Untrained people: 55%
Endurance athletes: 70%
What other changes occur when lactate threshold is met?
Increase in mitochondria and capillary density
Ways to monitor the patient and rate their perceived level of exertion
Borg Scale
Talk test
What its the talk test and what is it used to measure
Determining patients ability to respond in conversation
Reflects:
HR
Vo2
Lactate threshold
Anaerobic threshold
Point where shift toward anaerobic metabolism where excess CO2 is expired
Endocrine changes with exercise. What increases and decreases?
Increase: cortisol, catecholamines, endorphins, growth hormone, testosterone
Decrease: insulin
Physiologic changes with training
- decreased resting HR
- increased SV at rest
- max CO increase
- increase in BV
- static lung volumes UNCHANGED
- HDL increase
- cholesterol decrease
What is the PAR-Q form?
Physical activity readiness questionnaire
Screen for exercise contra-indications
What is the minimum requirement before starting an exercise program. Screening wise
PAR-Q form
Ages 15-69
What are the 7 ACSM risk factors?
- Family history of atherosclerotic disease
- Smoker
- HTN (>140, 90 or antiHTN meds)
- Dyslipidemia (LDL>140, HDL<40, cholesterol> 200)
- Prediabetes >100
- Obesity >30BMI
- Sedentary lifestyle
If HDL> 60 take away one risk factor
Major S/S of CVD, Pulmonary or metabolic disease
- pain/discomfort in UE
- shortness of breath
- dizzy
- orthopnea
- ankle edema
- palpitations/tachycardia
- intermittent claudication
- heart murmur
- unusual fatigue/shortness of breath
ACSM risk stratification
Low risk
Men< 45
Women <55
With no more than one risk factor
ACSM risk stratification
Moderate risk
Men>45
Women >55
With two or more risk factors
ACSM risk stratification
High risk
Have a major risk factor
(Pain in UE, shortness of breath, dizzy, orthopnea, ankle edema, palpitations, intermittent claudication, heart murmur, unusual fatigue)
Or CVD, pulmonary or metabolic disease
Is an exam/exercise testing required? For low, moderate and high risk patients with moderate intensity and vigorous intensity
Moderate intensity/low risk: no
Moderate intensity/moderate risk: no
Moderate intensity/high risk: yes
Vigorous/low risk: no
Vigorous/moderate risk: yes
Vigorous/high risk: yes
Is physician supervision recommended during the exercise test for low, moderate and high risk patients for both submax testing and max testing
Submax testing:
Low risk: no
Moderate: no
High: yes
Max testing:
Low risk: no
Moderate: yes
High: yes
What is VO2 for moderate intensity
40-59%
What is Vo2 for vigorous intensity
60%+
What are examples of submaximal tests?
Run/walk (1.5 mile run) (rockport 1 mile walk) Step tests (Queens college step test—steps for 3 min...men 24/min, women 22) Bike tests (Blake treadmill test)
What is the submaximal walking test called?
Blake treadmill test
3.3 mPH @0% grade and increase incline 1% each minute
Measure time till exhaustion
What is the Karvonen?
Heart rate reserve formula
Take into account available heart range due to varying resting heart rate baselines
Heart rate and VO2 have a _____correlation
Direct
What is the Karvonen formula
220-age=max HR
Max HR - Resting HR= Heart rate reserve
HHR x moderate/vigorous %’s to get HR range target
Mod: 40-59
Vig: 60-80
S/s of concussion
HA Fog feeling Changes in personality LOC/amnesia Gait changes Irritable Slow reaction times Sleep disturbance
Red flags of concussion
Neck pain/tender Double vision Weak/tingling/burning in extremities HA (severe/increasing) Seizure LOC Vomit Increased restlessness/combative
SCAT-5 cognitive screening sections
Immediate memory
Digits backwards
Months in reverse
SCAT 5 neurological screen
- read outloud directions and follow instructions
- full range of pain free passive C-movement
- without moving head can they follow your finger without vision changes
- finger to nose
- tandem gait
SCAT 5 balance testing
Aka modified Bess
20 second trials
Double, single and tandem stance
Errors: hands on crest Open eyes Step/stumble Moving hip further into flexion Lifting forefoot/heel
Return to play protocol after concussion
- Symptom-limited activity
- Light aerobic
- Sport specific exercises
- Non-contact training drills
- Full contact practice
- Return
Symptom limited activity post concussion (1)
24-48 hours
Gradual reintroduction of work/school activities
Light aerobic exercise post concussion stage
When no concussion related symptoms present and can perform at or above pre-injury levels of motor and neurological function
What activities are allowed during light aerobic exercise stage post concussion
Walking, swimming, running, stationary bike
<70% max HR
No resistance training
Sport specific exercicse stage post concussion
When no concussion symptoms, performing normally and no return of symptoms with any prior activity
What is done during sport specific exercise post concussion
Movement drills, simple without much decision making
NO head impact activities
Add movement to increase HR
Non-contact training drill stage post concussions
No related symptoms, performing normally, no return of symptoms
What is done during non-contact training drills post concussion (4)
Tasks requiring complex physical/cognitive demand
MAY start resistance training
Exercise,cognition, coordination
Full contact practice activities post concussion
Normal team training activities while monitored my coach
Return to school strategy post concussion
- Daily activities that do not recreate symptoms
- School activities
- Return part-time
- Return full-time
Daily activities that do not recreate symptoms-return to school
Allow gradually:
Screen, reading, texting
School activities-return to school
Homework
Reading
Other cognitive activities PUTSIDE classroom
Minimal screening exam for concussion
Mental status (alert/memory/behavior) Cranial nerves (2-12) Motor Strength Reflexes Sensory