The Most Important Determinant of the Proportion of Fast- and Slow-Twitch

question 139

Multiple Choice

The most important determinant of the proportion of fast- and slow-twitch fibers in skeletal muscle is

• A) diet.
• B) exercise.
• C) genetic heritage.
• D) age.
• E) None of the above

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Definitions:

Statistically Significant

Statistically significant results indicate that the observed effects or differences in a study are unlikely to be due to chance, based on a predetermined significance level.

Alpha Level

Another term for significance level, representing the threshold of probability at which the null hypothesis is rejected in hypothesis testing.

Null Hypothesis

A hypothesis that there is no significant difference between specified populations, any observed difference being due to sampling or experimental error.

Alternative Hypothesis

A statement in statistics that indicates the presence of an effect, difference, or relationship when compared to the null hypothesis.