Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
|
how long is atp stored for in atp and creatine phosphate reserves
|
4-6 seconds
|
|
|
how long is creatine phosphate stored for in reserves
|
15 seconds
|
|
|
what energy system is used for a short quick power surge (weight lifting)
|
creatine phosphate
|
|
|
what energy system is used in activity with on/off bursts (tennis, soccer)
|
anaerobic glycolysis
|
|
|
what energy system kicks early in exercise
|
anaerobic glycolysis
|
|
|
at what percentage of muscle contraction does anaerobic glycolysis kick in
|
70% of max or more
|
|
|
when does muscle fatigue occur in anaerobic glycolysis
|
1 or 2 minutes
|
|
|
anaerobic threshold definition
|
point at which muscles convert over to anaerobic glycolysis
|
|
|
what energy system is used for prolonged activity (jogging, marathons, bicycling)
|
aerobic respiration
|
|
|
aerobic respiration can provide energy for how long
|
hours
|
|
|
aerobic endurance definition
|
length of time a muscle can contract using the aerobic pathway
|
|
|
what happens any time the aerobic mechanism can't keep up with atp production
|
anaerobic mechanism will kick in
|
|
|
muscle fatigue definition
|
when muscles lose its ability to contract
|
|
|
muscle fatigue usually results from
|
strenuous exercise
|
|
|
when muscle fatigue occurrs, atp production is ____ than atp ____
|
less - usage
|
|
|
muscle fatigue may occur from inadequate ____ ____
|
blood supply
|
|
|
muscle fatigue may occur from ____ ____ accumulation (low pH prevents muscles fibers from contracting)
|
lactic acid
|
|
|
low ____ prevents muscle fibers from contracting
|
pH
|
|
|
____ (cramps) may occur if no atp is available
|
contractures
|
|
|
oxygen debt definition
|
amount of extra oxygen that must be taken following exercise in order to restore all oxygen-requiring activities that were put on hold during exercise
|
|
|
what reserves are replenished in oxygen debt
|
atp - creatine phosphate - muscle oxygen
|
|
|
only ____ % of the energy used released during muscle contraction is used for ____
|
20-25 - work
|
|
|
during muscle contraction most of energy is given off as ____
|
heat
|
|
|
during muscle contraction the body responds by dilating ____ ____ in the skin and ____
|
blood vessels - sweating
|
|
|
rapid muscle contractions will produce ____ when the body is too____
|
heat - cold (shivering)
|
