Lecture 8

Question 1

*How could you estimate energy systems contributions in intermittent-intensity activities?

Answer 1

GPS, changes in gait, time, distance

Question 2

Oxygen deficit:

Answer 2

Diff b/w total o2 consumption during ex and the total that would have been consumed had steady-state o2 consumption have been achieved from the start

Question 3

*The dominant approach to determine both peak and mean anaerobic power has been to….

Answer 3

Measure the rate & quantity of work performed under circumstances in which aerobic metabolism is assumed to contribute very little.

Question 4

Peak anaerobic power tests*

Answer 4

The predominant energy source is from the ATP/PCr system

Question 5

Mean anaerobic power tests *

Answer 5

Anaerobic glycolysis is presumed to be the prime energy source

Question 6

Anaerobic capacity:*

Answer 6

The maximal amount of ATP resynthesized via anaerobic metabolism (by the whole organism) during a specific mode of short-duration maximal exercise (supra-vo2max effort)

Question 7

Uses of work/power tests:

Answer 7

1 assessing current capacity & comparison with established norms*
2 monitoring changes in physiologic capacity as a result of training
3 determining event characterization*
4 establishing a goal for a rehab program
5 identifying talent or providing guidance in even selection
6 serving as a motivational tool *
7 predict performance *

Question 8

Force (F):

Answer 8

That which causes or tends to cause a change in an object’s motion
Mass (m) x acceleration (a)
Newtons (N)

Question 9

Work:

Answer 9

Product of the F applied to an object and the linear distance the object moves as a result of the applied force
= F x d
Joules (J)

Question 10

Power:

Answer 10

Amount of work performed /unit of time
= work / t
(W)
P = F x d / t

Question 11

Anaerobic power:

Answer 11

Maximum power

Question 12

Anaerobic capacity:

Answer 12

Average power and /or total work calculated over certain time

Question 13

Physiological assessment of anaerobic energy system:

Answer 13

Size of intramuscular ATP-PCr pool
Depletion rates ATP & PCr in all-out short duration ex
O2 deficit calculation from initial phase of ex o2 consumption curve
Alactic portion (fast component) of recovery o2 consumption

Question 14

Physical assessment of anaerobic energy system:

Answer 14

Performance that substantially activate the short-term E system requires maximal E for up to 3mins
All-out run
All-out cycle ergometer
Shuttle run
Vertical jump protocol
Repetitive weight lifting

Question 15

1RM prediction equation*

Answer 15

1RM = [(weight used) x (# reps performed) x (0.03)] + wt used]

Question 16

vertical jump tests used as…

Answer 16

index of peak anaerobic power output.

Question 17

Peak power:

Answer 17

Highest power output achieved in a short high-intensity sprint test

Question 18

Maximal accumulated o2 deficit (MAOD):

Answer 18

Diff b/w o2 equivalanet of the work performed and the o2 consumed during an anaerobic capacity test

Question 19

MAOD limitation:

Answer 19

Extrapolation of the linear r/ship b/w vo2 and submaximal work intensities may not yield a valid estimate of the o2 requirement of supramaximal work

Question 20

MAOD assumption:

Answer 20

The mechanical efficiency of supramaximal work is identical to that for submaximal work

Question 21

Diff b/w anaerobic capacity test and MAOD

Answer 21

MAOD – oxygen, anaerobic capacity – anaerobic peak & mean power, fatigue