KAAP 602
In-Class Example
Problem: A physical therapist has developed an
exercise regimen that is designed to help people who have an excessive amount
of pronation when walking. The regimen
is designed to enable some individuals to walk comfortably without orthotics
and others to utilize their orthotics more effectively. However, colleagues in the field are not
convinced that the exercises have any effect on the patients, and have asked
for proof that the exercises actually work.
The PT went about designing a study that consisted of four groups of
patients in a 2 x 2 design. Patients
were assigned to one of the four groups using a randomized block design so that
the groups were equal prior to beginning the exercise treatment. After six weeks of treatment, the four
groups returned, and the maximum amount of pronation exhibited during walking
was measured (less is better). The
following table contains the results from the study. Analyze the data and interpret the results.
|
|
Orthotics |
No Orthotics |
||
|
Exercise |
5 |
3 |
6 |
8 |
|
3 |
1 |
5 |
9 |
|
|
3 |
3 |
6 |
8 |
|
|
0 |
1 |
7 |
5 |
|
|
2 |
4 |
4 |
7 |
|
|
|
|
|
|
|
|
No Exercise |
6 |
9 |
4 |
4 |
|
6 |
5 |
3 |
2 |
|
|
3 |
8 |
2 |
4 |
|
|
9 |
7 |
3 |
3 |
|
|
4 |
6 |
4 |
3 |
|