HBIO 205 Lab Final Study Guide
Body Composition - Lab 1
% fat that men and women carry as essential fat
Males: 3%
Females: 12%
Position of the skinfolds taken in lab for men and women
Males: chest, abdomen, thigh
Females: triceps, thigh, suprailiac
How to calculate fat mass
(Body Fat % [in decimal form]) * (Total Weight) = Total Fat Mass
How to calculate fat free mass (FFM)
(Total Weight) – (Total Fat Mass) = FFM
How to calculate BMI
Weight (kg) / Height (m)^2 = BMI
How to calculate ideal body weight from ideal percent fat
FFM / (1 – (Ideal Body Fat % [in decimal form])) = Ideal Body Weight
BMI classifications
BMI CLASSIFICATION Risk of Associated Illness
< 18.5 Underweight Low
18.5 – 24.9 Normal Range Average
25-29.9 Overweight / Pre-Obese Increased
30 – 34.9 Obesity Class I Moderate
35 – 39.9 Obesity Class II Severe
> 40 Obesity Class III Very Severe
Methods used to measure body fat percentage (pg 26-27)/ list all 8
Height/weight
BMI
Girth Measurement
Waist-to-Hip Ratio
Skinfold Measurement
Bioelectrical Impedance Analysis
Hydrostatic Weighing
Air Displacement
The difference between a research and null hypothesis (pg 9 bottom)
Null – the opposite of your actual hypothesis, it is what you test against
→ Assumed true unless proven otherwise
, → Statistical analysis ran to disprove of the null
→ The null states that any association/difference between the variables is random
Research – your actual hypothesis, and the results you expect to find
→ Requires two variables, a type of interaction (correlation), and
direction of interaction
Indirect methods of measuring body composition (all methods in class) (pg 26-27)
Indirect – predictive methods of assessment… so, all of the methods listed
Direct – chemical analysis or dissection of a cadaver… not exactly feasible
Fat patterns of the human body (last paragraph pg 24)
Apple shape – more weight above the waist
Pear shape – more weight below the waist
Aerobic Capacity - Lab 2
How to determine one’s aerobic capacity (lab)
VO2max (maximal oxygen consumption per minute) as a measure
→ Subject must perform a maximal level of exercise
→ Subject must start exercise at very low work intensity and gradually increase
work every 2 - 3 mins
→ At some point, workload increases but VO2 fails to increase, thus VO2max
achieved
Astrand-Rhyming Test (pg 42)
Used to determine VO2max
→ It is a submaximal exercise performance test,
4 limitations: 1) Assumes a linear relationship between VO2 & HR
2) Assumes similar maximum HR for all subjects of the same age
3) Assumes constant economy (mechanical efficency)
4) Results based on HR response (many factors go into the HR)
How to calculate steady state heart rate (table on pg 49)
Classified: two heart rates that are within 5 bpm of each other, higher than previous values
(HR1 + HR2) / 2 = Steady State Heart Rate
How to calculate steady state power workload (table on pg 49 and lab)
(Value1 + Value2) / 2 = Steady State power workload
→ Values are determined by HR that come from a table (p44)
How to calculate predicted VO2 Max (pg 42, 45-46 tables)
(Value1 + Value2) / 2 = predicted VO2max
→ Values are determined by HR that come from a table (p45 or p46)
Mainly aerobic activities
Rowing, running, biking, nordic skiing... anything that doesn't involve repeated stops.
VO2 Max criteria (pg 40)
Two out of the 4 criteria must be met to classify
1) A plateau in VO2
2) Peak RER > 1.0 (RER = VCO2/VO2)
3) Peak blood lactate level >= 8.0 mM
Body Composition - Lab 1
% fat that men and women carry as essential fat
Males: 3%
Females: 12%
Position of the skinfolds taken in lab for men and women
Males: chest, abdomen, thigh
Females: triceps, thigh, suprailiac
How to calculate fat mass
(Body Fat % [in decimal form]) * (Total Weight) = Total Fat Mass
How to calculate fat free mass (FFM)
(Total Weight) – (Total Fat Mass) = FFM
How to calculate BMI
Weight (kg) / Height (m)^2 = BMI
How to calculate ideal body weight from ideal percent fat
FFM / (1 – (Ideal Body Fat % [in decimal form])) = Ideal Body Weight
BMI classifications
BMI CLASSIFICATION Risk of Associated Illness
< 18.5 Underweight Low
18.5 – 24.9 Normal Range Average
25-29.9 Overweight / Pre-Obese Increased
30 – 34.9 Obesity Class I Moderate
35 – 39.9 Obesity Class II Severe
> 40 Obesity Class III Very Severe
Methods used to measure body fat percentage (pg 26-27)/ list all 8
Height/weight
BMI
Girth Measurement
Waist-to-Hip Ratio
Skinfold Measurement
Bioelectrical Impedance Analysis
Hydrostatic Weighing
Air Displacement
The difference between a research and null hypothesis (pg 9 bottom)
Null – the opposite of your actual hypothesis, it is what you test against
→ Assumed true unless proven otherwise
, → Statistical analysis ran to disprove of the null
→ The null states that any association/difference between the variables is random
Research – your actual hypothesis, and the results you expect to find
→ Requires two variables, a type of interaction (correlation), and
direction of interaction
Indirect methods of measuring body composition (all methods in class) (pg 26-27)
Indirect – predictive methods of assessment… so, all of the methods listed
Direct – chemical analysis or dissection of a cadaver… not exactly feasible
Fat patterns of the human body (last paragraph pg 24)
Apple shape – more weight above the waist
Pear shape – more weight below the waist
Aerobic Capacity - Lab 2
How to determine one’s aerobic capacity (lab)
VO2max (maximal oxygen consumption per minute) as a measure
→ Subject must perform a maximal level of exercise
→ Subject must start exercise at very low work intensity and gradually increase
work every 2 - 3 mins
→ At some point, workload increases but VO2 fails to increase, thus VO2max
achieved
Astrand-Rhyming Test (pg 42)
Used to determine VO2max
→ It is a submaximal exercise performance test,
4 limitations: 1) Assumes a linear relationship between VO2 & HR
2) Assumes similar maximum HR for all subjects of the same age
3) Assumes constant economy (mechanical efficency)
4) Results based on HR response (many factors go into the HR)
How to calculate steady state heart rate (table on pg 49)
Classified: two heart rates that are within 5 bpm of each other, higher than previous values
(HR1 + HR2) / 2 = Steady State Heart Rate
How to calculate steady state power workload (table on pg 49 and lab)
(Value1 + Value2) / 2 = Steady State power workload
→ Values are determined by HR that come from a table (p44)
How to calculate predicted VO2 Max (pg 42, 45-46 tables)
(Value1 + Value2) / 2 = predicted VO2max
→ Values are determined by HR that come from a table (p45 or p46)
Mainly aerobic activities
Rowing, running, biking, nordic skiing... anything that doesn't involve repeated stops.
VO2 Max criteria (pg 40)
Two out of the 4 criteria must be met to classify
1) A plateau in VO2
2) Peak RER > 1.0 (RER = VCO2/VO2)
3) Peak blood lactate level >= 8.0 mM
