Evaluating Fitness Tests

Lecture 12

What is validity?

ability of test to measure accurately, with minimal error, a specific physical fitness component

what is Validity Coefficient (r)?

relationship between predicted score and reference score.

close to 1 = valid

What is the Line of Best Fit?

regression line for relationship between measured and predicted scores

what is Standard Error of the Estimate? (SEE)

how far away the predicted are from the line of best fit

\*\* want close to zero as possible

What is sensitivity?

probability of correctly identifying individuals with a risk

\*\*low false negative\*\*

no you dont have the condition but acc do

What is specificity?

probability of correctly identifying individuals without a risk

\*\*low false positive\*\*

lose false “-” & “+”

What is reliability?

Consistent and stable over time

what is Objectivity?

intertester reliability

do all testers get the sea measures

What is Line of Identity and Total Error (TE)?

* Forcing a perfect relationship
* if all dots on one slide, then you are under or over estimating values

What is Bland-Altman plot?

* useful statistical tool
* good predictor for outliers
* ==Reference - Predicted = Difference Score==
* if positive → predicted value underestimated
* if negative → predicted value overestimated