Lab quizzes 6-10 Flashcards
how do you determine if a subject has reached steady state in submaximal HR (lab 6)
HR does not change 6 bpm for 2 consecutive minutes
based on ACSM position stand which of the following would be expected to result in health benefits
meeting ACSM guidelines for physical activity
reducing time spent in sedentary pursuits
breaking up prolonged periods of sedentary behavior
T/F: predicting one’s VO2 max can be valuable for making exercise conditions
true
when estimating VO2 max using the extrapolation/graphing method it is advised to plot two HRs that fall between what values
greater than 120 bpm but less than 85% of HRmax
how long will students step during Queens College step test
3 minutes
which methods will be used to predict VO2 max in lab 6
nonexercise VO2 max prediction
submax HR extrapolation
calculate the HRR for an individual with a HR max of 200 bpm and a resting HR of 80 bpm
120 bpm
T/F: BMI is an adequate measurement of disease risk for individuals across any fitness level
false
in conjunction with BMI, _____ is used to assess health risk and is valuable in assessing central obesity
waist circumfrence
the interrelationship among energy availability, menstrual function, and bone mineral density is referred to as the
athlete triad
how many skinfold sites are used in lab 10 (body comp)
7
list 2 potential sources of error involved in skinfold method for assessment of body composition
accuracy of skinfold measurement
technician training
Subject A has a body mass of 50 kg and body fat percentage of 10%. What is their lean body mass in kg?
45
the ______ corresponds to how many standard deviations away your BMD is compared to the mean for a healthy young adult of the same sex
t score
the ______ corresponds to how many standard deviations away your BMD value is compared to the mean for your age, sex, and ethnicity
z score
mean arterial pressure represents the _____ pressure in the arteries during a cardiac cycle
average
T/F: high blood pressure always results in acute symptoms
false
aerobic training decreases blood pressure in what conditions
rest and submaximal exercise at the same maximal intensity
what would a resting BP of 116/79 be classified as
normotensive
during GXT, the _______ is used to indicate the hearts ability to function normally under increased myocardial O2 demand
ECG
during the lab procedure, what are the two positions in which we will be taking BP
standing and sitting
you record the following data at rest: systolic=100 and diastolic = 70 what is PP
30 mmHg
how does systolic BP change with increased exercise intensity
increases
normal core body temperature is around what temperature
37
list 2 mechanisms of heat transfer
conduction and convection
T/F: the body always loses heat through all four mechanisms of heat transfer
false
body mass loss during exercise can occur from what mechanism
sweat loss
metabolic mass loss
respiratory water loss
urinary water loss
using the information below, calculate the amount of energy lost to heat
total kcal produced: 100 kcal
cycling efficiency: 20%
80 kcals lost to heat
some atheletes prepare for competitions in hot weather by deliberately choosing to have some of their training outside during the hottest part of the day. What is this type of adaptation called
acclimitization
exercise plus heat stress may reduce plasma volume more than exercise alone. Why?
because heat stress increases sweat rate
how many minutes do students exercise in thermoregulation lab
40 min
approximately what altitude are we stimulating in todays lab
pikes peak (14,110 ft above sea level)
list the two conditions under which hypoxia will be administered during the lab condition
rest and submaximal exercise
when determining inspiratory partial pressure of O2 (PiO2), which parameters are dependent on altitude
Pb
which statement best explains the shape advantages of the Hb-O2 dissociation curve at sea level
near the top of the curve, small changes in PaO2 have minimal effects on SaO2
T/F: the amount of O2 dissolved in the plasma is extremely small compared to the amount bound to Hb
true
what variable would not be affected from sea level to acute high altitude exposure
HR max at Vo2 max
T/F: the percentage of O2 in Boulder is less than at sea level
False
which of the following parameters does not contribute directly to CaO2
cardiac output
which of the following populations would be expected to have a larger percent decrease in VO2 max at 20,000 ft
elite endurance trained athletes
