post midterms

Question 1

VO2 Max

Answer 1

the maximum amount of o2 that can be delivered to and consumed by the body tissues per unit

Question 2

Absolute VO2

Answer 2

total volume of oxygen taken up by the body (more useful body weight is not carried - rowing cycling

Question 3

relative vo2

Answer 3

volume of oxygen taken up by the body relative to body weight (more useful for activities)

Question 4

o2 delivery determing factors

Answer 4

hemoglobin (o2 in blood) the oxygen binding protein in red blood cells

cardiac output - maximum volume of blood that the heart can pump each minute

Question 5

o2 use

Answer 5

mitochondria
muscle mass
capillaries
muscle biochemistry

Question 6

3 factors that affect performance besisdes vo2

Answer 6

1. Mental attitude
2. running economy (efficiancy)
3. high lactate threshold

Question 7

Alactic acid ATP/PC system

Answer 7

creatine phosphateis the fuel source - burns very fast 8-12 seconds

Question 8

Lactic acid system

Answer 8

Glycogen is the only energy store burns fast to medium 30 seconds to 3 minutes

Question 9

aerobic energy

Answer 9

glycogen and fats is the source - 3+ minutes takes a while to recover 24 + hours

Question 10

what are the thick filaments called

Answer 10

myosin

Question 11

what are the small filaments called

Answer 11

actin

Question 12

the name of a functional unit of muscle contraction

Answer 12

sarcomere - has alternating thick and thin filaments

Question 13

The name of the part of the muscle fiber containing the muscle filaments (microfilaments)

Answer 13

myofibrils

Question 14

Which filament is sliding and which is pulling

Answer 14

Myosin (thick) pulls actin (small) in

Question 15

+ ion necessary for muscle contraction

Answer 15

calcium ions ca+2

Question 16

the role of atp in muscle contraction

Answer 16

ATP is responsible for cocking (pulling back) the myosin head, ready for another cycle. When it binds to the myosin head, it causes the cross bridge between actin and myosin to detach. ATP then provides the energy to pull the myosin back

Question 17

explain periodization

Answer 17

systemic planning or physical training that involves progressive cycling of a program during various training phases

Question 18

explain volume in strength training

Answer 18

measure or estimate of the total work performed

Question 19

motor unit

Answer 19

concept of a motor unit was introduced by Sherrington the #fibres/motors unit varies

Question 20

fine movements

Answer 20

eye muscle= 1 finer/motor unit

Question 21

gross movements

Answer 21

postural control = up to 700/motor unit

Question 22

size principle

Answer 22

recruits smallest motor units first then systematically increases size of unit recruited until desired force achieved

Question 23

two factors affecting strength

Answer 23

neural control

muscle cross-sectional area

Question 24

macro cycle

Answer 24

entire training year

Question 25

mesocycle

Answer 25

weeks ti months - depends on sports and competitions and length of season

Question 26

microcycle

Answer 26

days to weeks - training variations

Question 27

major goals of sport sociology (1-3)

Answer 27

1. the factors underlying the creation and organization
2. the relationship between sport and other aspects such as family education politics, the economy, the media and religion
3. the influence of sport and sport participation on individuals beliefs about equity, gender , race ethnicity disability

Question 28

major goals of sport sociology (4-6)

Answer 28

4. social dynamics - coach athlete relationship. hierarchy in sport
5. the influence of cultural, structural and situational factors. representing your country. high school football Brandon vs Texas
6. the societal process associated with sport - teaching life lessons

Question 29

malloys first step in ethical framework

Answer 29

determine at least 2 possible decisions

a. start taking the substance to aid in training
b. refuse to take the substance

Question 30

Malloys second step in ethical framework

Answer 30

evaluate each decision
deontology
teleology
existentialism