Anthropometry Ergonomics

anthropometry

The study of human body measurements, including size, shape, and
strength.

ergonomics

The science of designing products and environments to fit the users, enhancing comfort, efficiency, and safety.

• Data Collection: Measurements like height, weight, arm length, and hand size.

• Applications: Used in designing furniture, clothing, tools, and workspaces.

• Example: Designing a chair that fits the average height and leg length of the target population.

Importance of Anthropometry

• User-Centered Design: Creating products that reduce strain and increase productivity.

• Applications: Office furniture, computer accessories, vehicle interiors.

• Example: An ergonomic keyboard designed to minimize wrist strain.

Importance of Ergonomics

• Evaluation: Need to assess process, assumptions made during the process

• Analysis: What do you need to know about the human being/product user, user-product interaction

• Modeling

• Simulation

human model

weight

The force of gravity acting on an object

m * g

mass * acceleration of gravity

• Adipose

• Muscle

• Bone

• Blood

What type of tissue is the body made of?

• Genetics

• Growth

• Nutrition

Factors that affect body composition

Endomorph

• Pear shaped body

• Wide hips and shoulders

• Higher amounts of fat

• Sports benefits:

  • Pure strength

  • Gain weight and muscle easily but loose conditioning quickly

• Rowers, linemen, rugby, power lifting

mesomorph

• Wedge shaped body

• Muscular arms and legs

• Minimum amounts of fat

• Sports benefits:

  • Strength, agility, speed

  • Easily loose and gain weight

  • Do well with cardiovascular and resistance training

• Typical athlete

ectomorph

• Narrow shoulders and hips

• Narrow chest and abdomen

• Thin arms and legs

• Little muscle and fat

• Sports benefits:

  • Aerobic activities due to their light frame

  • Can add more muscle easily but not large gains in mass

• Endurance athletes

body mass index (BMI)

A measure of body fat based on height and weight

BMI = kg/m²

ACTN3

Muscle gene required to generate forceful contractions at high velocity

EPAS1 & ACE

Enhance cardiorespiratory function

musTRD

Regulates muscle hypertrophy, represses slow-twitch fiber development in favor of fast twitch fibers

P70^s6k

Increases muscle growth

Maintain body weight

Food intake = energy output

Bulk up

Food intake = exceed energy output

basal metabolic rate

Rate of energy output in an individual

Tissue building properties while reducing body fat

How do steroids increase body size?

cyproterone acetate

Blocks testosterone receptors involved in maturation at purbery