ACSM C-5

Question 0

VCO2=

Answer 0

Volume of CO2 produced per minute

Question 1

VO2=

Answer 1

Volume of 02 used per minute

Question 2

RER

Answer 2

Respiratory exchange ratio

VCO2/VO2

Question 3

RER oxidation of Fat

RER oxidation of CHO

Answer 3

Fat = 0.7

CHO = 1.0

Question 4

RMR

Answer 4

Resting Metabolic Rate

The minimum amount of energy required by the body to maintain/sustain basic cellular function.

Question 5

RMR Factors

Answer 5

Ranges from 1100/2500 kcal/day
Add 600 kcal or more w activity
Dec. w age (dec fat free mass)
Inc. w temp. 
Inc. w stress
Inc. by Epi & Thyroxin
Inc. w injury

Question 6

O2 deficit

Answer 6

At the start of exercise, the difference b/t the O2 required for a given exercise intensity & the actual O2 consumption.

Question 7

EPOC

Answer 7

O2 debt – anaerobic effort estimated by the elevated O2 consumption after an executive cost bout has ended

Question 8

EPOC Factors

Answer 8

Rebuilds depleted ATP/PCR supply
Cleans lactate, removes accumulated CO2
Replenishes O2 in Hgb & myoglobin stores
Inc. metabolic & resp ratio due to inc. body temp

Question 9

Lactate Threshold (LT)

Answer 9

When blood lactate begins to accumulate dying intense exercise.

Question 10

LT Factors

Answer 10

Denotes a shift in energy systems from O2 to anaerobic
Expressed % use of VO2 max
H+ accumulation contributes to fatigue (“hitting the wall”)
One of the best determinants of an athlete’s pace in endurance events

Untrained -> LT=50-60% VO2 max
Elite -> LT=70-80% VO2 max

Question 11

Characteristics of successful endurance athletes

Answer 11

High VO2 max
High LT
High “economy of effort”
High % of Type 1 muscle fibers