Determine the Muscle Force Needed to Maintain an Upright Position

question 14

Multiple Choice

Determine the muscle force needed to maintain an upright position for the following subject during single limb stance. Body weight = 240 lbs.
Line of gravity (LoG) to rotation point on femur = 4 in.
Femoral head to abductor muscle attachment = 2.5 in.

• A) 384 lbs.
• B) 320 lbs.
• C) 256 lbs.
• D) 150 lbs.

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Definitions:

Poisson Random Variable

Represents the number of events occurring within a fixed interval of time or space, assuming these events happen at a constant rate and independently of the time since the last event.

Expected Value

The expected value is the long-run average value of repetitions of an experiment it represents, often used in probability and statistics.

Poisson Distribution

A probability distribution that represents the likelihood of observing a certain number of events within a specified time or space interval.

Poisson Distribution

A probability distribution that expresses the probability of a given number of events occurring in a fixed interval of time or space, assuming these events occur with a known constant rate and independently of the time since the last event.