Jan 1 Body Comp Assessment

Question 1

What is the most common measure of obesity?

Answer 1

BMI = weight (kg) / height (m²)

Question 2

Relationship between BMI and Mortality Risk:

Very Low BMI (_____): _____ risk.
Normal BMI (_____ - _____): _____ risk.
Overweight BMI (_____ _____): Increased risk.
Obesity BMI (_____): Higher mortality risks, categorized as:
Class I (_____ -_____): High risk.
Class II (_____ -_____): Very high risk.
Class III (_____): Extremely high risk.

Answer 2

Relationship between BMI and Mortality Risk:

Very Low BMI (<18.5): Increased risk.
Normal BMI (18.5-24.9): Least risk.
Overweight BMI (25-29.9): Increased risk.
Obesity BMI (>30): Higher mortality risks, categorized as:
Class I (30-34.9): High risk.
Class II (35-39.9): Very high risk.
Class III (>40): Extremely high risk.

Question 3

Body components: Divided into _____ mass and _____ mass (_____, organs, _____, connective tissues).

Answer 3

Body components: Divided into fat mass and fat-free mass (bone, organs, muscles, connective tissues).

Question 4

_____:
Formula: _____ = _____ / _____ (uses _____’ Principle).

Visible Human Project = _____ _____ of 2 humans (male and Female) _____-_____ and sliced into 1mm slices

Answer 4

Densitometry:

Formula: Density = Mass / Volume (uses Archimedes’ Principle).

Visible Human Project = 3D reconstruction of 2 humans (male and Female) Flash-frozen and sliced into 1mm slices

Question 5

Imaging Techniques:

_____ _____ _____ (MRI) = _____ and labour _____

_____ ______ (CT) uses _____ to examine specific _____, muscles, and bones. The higher the _____, the _____ the colour. CT is also _____ than MRI.

3D reconstructions (e.g., abdomen and thigh).

Answer 5

Imaging Techniques:

Magnetic Resonance Imaging (MRI) = Expensive and labour intensive

Computed Tomography (CT) uses radiation to examine specific tissues, muscles, and bones. The higher the density, the darker the colour. CT is also Cheaper than MRI.

3D reconstructions (e.g., abdomen and thigh).

Question 6

_____ ______ _____ _____(DEXA): Highly _____. Radiation levels are _____ to CT but lower (suntan). Segmented parts.

_____ _____ _____ (BIA): Affected by _____ and _____. It sends a mild _____ through the body to see how well you conduct _____. Very _____ through different models.

Ultrasound: Measures _____ differences. Sends _____ waves through the body. Different tissues have different sounds. Used by athletes to check _____ development. Not _____ as much.

Answer 6

Dual Energy X-ray Absorptiometry (DEXA): Highly accurate. Radiation levels are similar to CT but lower (suntan). Segmented parts.

Bioelectrical Impedance Analysis (BIA): Affected by hydration and equipment. It sends a mild shock through the body to see how well you conduct electricity. Very Inconsistent through different models.

Ultrasound: Measures tissue differences. Sends sound waves through the body. Different tissues have different sounds. Used by athletes to check muscle development. Not researched as much.

Question 7

_____:
Skinfold measures the _____ at multiple sites to predict _____ _____ percentage (%BF). Dependent on the _____ _____.

Answer 7

Anthropometry:
Skinfold measures the circumference at multiple sites to predict body fat percentage (%BF). Dependent on the measurer’s skill.

Question 8

_____ Method:
Uses _____ skinfolds (_____)(triceps, back, hip, abdomen, front thigh). Females (_____ _____)

_____ Method:
Uses _____ skinfolds (biceps, triceps, subscapular, supra-iliac).

Refer to specific tables for _____ conversion.

Differences Between Methods:
Percent fat _____ depending on the equations used.
Ideal weight estimates are _____ across methods.

Answer 8

Yuhasz Method:
Uses 6 skinfolds (chest)(triceps, back, hip, abdomen, front thigh). Females (Rear thigh)

Durnin Method:
Uses 4 skinfolds (biceps, triceps, subscapular, supra-iliac).
Refer to specific tables for %BF conversion.

Differences Between Methods:
Percent fat varies depending on the equations used.
Ideal weight estimates are similar across methods.