Due: November 28th, 2011
1. a) Which subjects sweat did your group analyze? (1/2 mark) - Jeff
b) What were the sodium and potassium concentrations in the sweat
samples? (1/2 mark)
Sample result: Na+: 123 mM +/- 2.09 mM
The goal is to come up with a inventive, innovative, novel and intersting (as well
as accurate) model of the endocrine interactions involved in controling blood
glucose during exercise!
SEVEN HORMONES THAT HELP CONTROL GLUCOSE METABOLISM
1) What is the plateau phenomenon? A steady state in oxygen consumption
reached during incremental exercise.
When oxygen intake reaches a maximum beyond which no effort can
drive it noted by authors as an increase of less than 150ml/min
- Pros and cons of tests
- Assumptions and limitations of tests
EPHE 444 Midterm notes
Lectures 1, 2, & 3 testing concepts
Reliability the consistency or repeatability of an observation; the degree to which
repeated measurements of a trait are reproducible under the same conditions. (e.g. if you
do a test 50 times and
Lectures 1, 2, 3 Testing Content - ReviewQuestions
Canatestbereliablebutnotvalid? Canatestbevalidbutnotreliable? Yes, a test can be reliable
but not valid. But a test CANT have validity without reliability.
Why? in order to accurately be able to test what
Exercise Induced Asthma
October 31st, 2011.
Introduction (Etiology and Prevalence)
Exercise-induced asthma (EIA) is defined as a type of asthma attack that is triggered by
physical activity. It is important to distinguish between EIA and exercise
EPHE 441 Pre Lab #3 Thermoregulation
1. Oxygen consumption can be measured as V02 using a cycle ergometer. For an
approximate 70kg male, an expected rate of consumption during the thirty minute cycle
would be about 2.0 L/min-1.
2. Sweat rate will be calcu
EPHE 441 Pre lab # 8
a) At sea level, air contains 20.93% Oxygen. At 2300m altitude, air contains 20.86%
oxygen (as PO2 = .2093 x barometric pressure (580) = 121. 121/580 x 100 = 20.86%)
b) Partial pressure of a gas is the pressure that the gas would h
EPHE 441 Pre lab #9 muscular strength/endurance
1. Make a list and be prepared to discuss factors that may contribute to muscular fatigue:
- Depletion of muscle glycogen
- Free radicals highly reactive and capable of damaging proteins, lipids, and DNA in
1. What are the commonly used criteria for determining if VO2max has been attained in a
VO2max test? (2 marks)
- oxygen consumption remains at steady state despite an increase in workload
2. List the four physiological factors that could limit VO2max. Whi
The effects of altitude on the human body can be witnessed with subjects exercising at high
altitudes. These effects are due to a decrease in the ambient partial pressure of oxygen (PO 2)
(McArdle, Katch and Katch, 2001). This means that ther
Training has a number of physiological effects on the body including an increased maximal
oxygen uptake (VO2 max) which increases on average by ~20%. In a study done by Blomqvist
and Saltin, VO2 max increased by 19% and 22% in men and women respectively (
EPHE 441 Mini Assignment #2
Both heart rate (HR) and mean arterial blood pressure, the average blood pressure during a
cardiac cylce (MAP) were found to be higher when measured during arm exercises than leg
exercises when working at the same oxygen uptake
Adenosine Triphosphate (ATP) is the major energy source for our bodies. Muscular
contractions are energized by the breakdown of ATP into ADP+Pi (inorganic phosphate) at the
onset of activity and with the help of the enzyme ATPase.
At the onset of intense
EPHE441 Mini Assignment #4
Do Fast skeletal muscle fibres exert more force than slow fibers?
EXPLAIN * your answer and support it with appropriate references
Remember to include mechanisms to help explain your answer.
- fast twitch fibres are best impacte
EPHE 444 - MIDTERM INFO
If you have no endurance, you have no strength.
o If you dont have the 1rm to do it once, you wont be able to do it 10 times.
o Testing concepts
o Aerobic power
o Muscle strength
o Muscle endurance