The standard unit for energy cost of gait listed in the lecture is what?

The standard unit for energy cost of gait listed in the lecture is what?

• A. kg/m²
• B. cal/kg/hr
• C. cal/kg/m
• D. m/sec²

Answer: (C)

The concept being tested is how energy cost of gait is expressed in units that reflect energy used per unit distance, normalized by body weight. That means calories per kilogram per meter (cal/kg/m). This unit shows how much energy a person uses to move each meter, adjusted for their body mass, so you can compare across different people and conditions. It isn’t energy per time (cal/kg/hr), which would be a metabolic rate, nor is it a density or acceleration unit (kg/m² or m/sec²). Hence, cal/kg/m is the standard expression for energy cost of gait.

The concept being tested is how energy cost of gait is expressed in units that reflect energy used per unit distance, normalized by body weight. That means calories per kilogram per meter (cal/kg/m). This unit shows how much energy a person uses to move each meter, adjusted for their body mass, so you can compare across different people and conditions. It isn’t energy per time (cal/kg/hr), which would be a metabolic rate, nor is it a density or acceleration unit (kg/m² or m/sec²). Hence, cal/kg/m is the standard expression for energy cost of gait.