In a Well-Designed Study, a Statistically Significant Increase in Maximal

question 14

Multiple Choice

In a well-designed study, a statistically significant increase in maximal strength with creatine supplementation was detected at 12 weeks but not at 1 week. What is the likely explanation?

• A) Creatine supplementation allowed athletes to complete more weight lifting repetitions and sets, but the effects of the training are not seen immediately.
• B) It takes time (about three months) for the body to increase the total amount of ATP stored in muscle.
• C) Time was needed to maximize carbohydrate stores because creatine storage and function are directly related to the size of muscle glycogen stores.
• D) Hormonal balance is altered, but the changes are slow and subtle and not detectable for approximately 12 weeks.

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Definitions:

Standard Deviation

A gauge of the extent to which a collection of numbers varies or is spread out.

Mean Weight

The average weight of a set of objects or individuals, calculated by summing their weights and dividing by the number of objects or individuals.

Standard Deviation

It quantifies the amount of variation or dispersion of a set of data values from its mean, serving as an indicator of the data's spread.

Sobriety

The state of being sober, which can refer to abstinence from alcohol and drugs, or having a clear, unaffected mind.