Hi everyone,

I am carrying out a piece of research on the effects of heel pain on the way we walk. I have two groups, 8 in the heel pain group and 15 in the non-heel pain group and am looking at data such as step length, foot angles and amount of steps per minute.

The plan was to carry out a unpaired t-test on the results gained however someone has commented that we may not have enough subjects to carry this out. Is there a minimum number of subjects needed to carry out a t-test? Also because people have two feet we have two sets of data for each subject will this make our t-tests more accurate?

Any help would be appreciated

I am carrying out a piece of research on the effects of heel pain on the way we walk. I have two groups, 8 in the heel pain group and 15 in the non-heel pain group and am looking at data such as step length, foot angles and amount of steps per minute.

The plan was to carry out a unpaired t-test on the results gained however someone has commented that we may not have enough subjects to carry this out. Is there a minimum number of subjects needed to carry out a t-test? Also because people have two feet we have two sets of data for each subject will this make our t-tests more accurate?

Any help would be appreciated

Last edited: