Weekly quizzes Flashcards
According to recent research, the upper sustainable limit of human metabolic rate, during prolonged exercise or other stress lasting weeks or more, is approximately how high relative to basal metabolic rate?
2.5x
How efficiently do humans perform exercise? i.e., what proportion of their stored food-substrate energy gets converted into useful work?
0 - 22%
Which fuel can NOT be catabalised (broken down) and used to drive oxidative metabolism
Creatine Phosphate
Ultimately, all energy released from stored chemical energy during exercise will become:
Thermal energy (~ “heat”)
Which IS a feature of assessing/’measuring’ aerobic power using an INDIRECT submaximal test?
It can allow a high throughput of people (assessments)
What is a ‘gold standard’ for measuring body density?
Underwater weighing
Measurement of fat free mass is most validly undertaken for the purposes of
Tracking changes over time
The units of BMI are
kg/m2
When thinking about scientific measurements, what are limits of agreement?
Maximum difference between consecutive measurements
When are you able to withdraw from a research project or laboratory activity that you have previously consented to?
At any time
For every 1 L of oxygen a person consumes, approximately how much energy does that person use?
20 kJ
What factors need to be considered when setting appropriate workloads for exercise in a health or performance context?
Training status
Sex
Type of fitness being investigated (i.e., strength or endurance)
True or False? Exercise normally contributes the majority of a person’s total daily energy usage.
False
RMR is approximately how much (i.e., %) of BMR?
50% (i.e., half of it)
What is the approximate difference between males and females in aerobic power?
10-20%
What type of symmetry do humans and other mammals exhibit that allows them to move purposefully and economically?
Bilateral
What are some assumptions in measuring body composition using skinfold thicknesses?
Skin thickness is a constant or negligible fraction of the skinfold
Adipose tissue has a consistent patterning in the body
Constant proportion of external (subcutaneous) to internal (esp. visceral) fat
Constant compressibility of skinfold (within and between people)
Which method of measuring two-compartment body mass (FM & FFM) is most RELIABLE?
Dual Energy X-ray Absorptiometry (DEXA or DXA)
The development of which 3 aspects of human behaviour seem to be closely linked in terms of their evolutionary history?
Tool use
Language
Cognition
The best form of exercise to ‘burn’ fat energy stores is:
Prolonged, medium intensity
