Quiz 2 Flashcards
Arteries
Blood leaving heart
Veins
Blood toward heart
Diastolic
Bp between contractions
Systolic
Bp during contraction
What dues our body need grom our cardiovascular system to perta emercise
High oz delivery high resource delirry signaling
Fixed principle
Vo2=Q(CaO2-CvO2)
Cardiac output
Q
Amount of blood pumped out of the heart (4/min)
Children increase 3/4x times during exercise 20-30% changes in sv
Spontaneous rhythmicity
The hearts ability to produce electrical signal without outside influence
Stroke volume
Amount of blood pumped out per beot
Linear with bod mass
Sv= edv-esv
Increase in sv caused by rise n er, reducessystojc vascular resistance
Frank starling mechanism
Myocardial sibers stretch, contractile ability of heart increases
>stretch=> contractile
Diastolic function
Ability of the ventricle to all during diastole is determined by a gradient caused by 2 types of pressure
Upstream pressure
Pressure caused by the blood entering the ventricle and is facilitated by the pressure of the blood entering the heart, and left atrial volume and contractile force
Downstream pressure
Pressure prevents blood from entering the ventricle. Caused by the end systolic ventricular pressure and the speed of relaxation of the ventricle
Heart chamber volume
During exercise may und diastolic volume of the heart chamber itself may increase slightly
Decrease systolic volume which contributes the most to the change in total su
Systemic vascular resistance
Lowers during exercise
Caused by vasodialation of prepheral blood vessels in the working muscles
Allows blood to leave the heart
Participation report card
Assigns evidence informed grades across i indicators using many sources of bestavalable peer-reviewed research
Indicators
Daily behaviour individual characteristis setting and source influence strategies andinvestements
Physical literacy
Motivation confidence physical competence knowledge and responsibility forengagement in physical activities for life
Person entered strategies
Every child is different and at differentplaces on the continue
Inclusive
Taught equitably social barriers
Positive
Pressure may put kids of sports structured us unstructured
Passport for life
Active participation
Living skills
Fitness skills
Movement skills
Play tools
Physical literacy assessment for youth
Valid and reliable
Peak pur
Highest mechanical power that is generated during exercise Los
Mean power
Aug mechanical power that is generated during 30 seconds of a task
Reasons why anaerobic performance is lower in children
Smaller muscle mass → ability to produce power, typ I fibers i in children
Lower glycolytic activity→ difference in alycolutic storage is 50%- lower in kids
How can we asses glycogen utilization
Max blood lactate
Ph
Baseline/resting quyrogen
Muscles can’t butter h’ ions and ph falls to 6.3
How Pa helps brain
Change structure
Greater brain volume in hippo and basal ganglia
Quay matter
Communication between white and quay
Active kids can switch on regions for high level thinking
Active play
F
211. Of 5-11 year olds spend time in active play
Active transportation
D minus
Organized sport
B
77% 5-19 play organized sports 66% of grades 6-10
Physical education
D plus
37.1. 5-11 receive 150min per week during school
Sedentary behaviours
D plus
Girds more then boys
Sleep
B
Physical literacy
D plus
24 hour movement
F
Physical fitness
D
School
B minus
Community and environment
B+
Hyperplasia
Cell number
Hypertrophy
Cell size
General curve
Growth of the whole body S shape
Neural curve
Growth of brain and nervous system 95% attained by 7
Timing
When specific maturation events occur
Tempo
Reuters to rate maturation progresses
Ditterences in metabolic cost
Cumulative Oz cost for a given mechanical work at different intensities
Explanations for increase in metabolic cost
Resting metabolic rate
Mechanically wasteful
High 10-contraction of antagonist
High to contraction
Simultaneous contraction of the agonist and antagonist muscles
9 meta analysis studies show
Rt can improve muscle strengthbefore puberty
Children can improve muscle strength above growth and maturation
Strength 74%
30-50% typical
8-12 weeks of rt
Fundamental
6-8f 6-9m motor skills
Train to train
11-15f 12-16m building the engine
Train to compete
15-21f 16-23m optimizing engine
Training to win
18+f 19+m max engine
Resistance training the right way
Around 12 Start with fundamentals Strength power endurance Progression Monitor process
Physical literacy
Motivation confidence physical competence knowledge and understanding to value and take responsibility for engagement in physical activities for life
Principles for physical literacy
Person centered strategies
Inclusive
Positive
Challenge
