Elements of Research in Physical Therapy

administration alternate hypothesis analysis of variance ANOVA answer approach appropriate assessing attitude scale behavior biofeedback blood flow calculated Chapter clinical research coefficient compared computed conduct control group correlation critical value degrees dependent variable determine discussed distribution Education effects electrical stimulation Electromyography error example exercise experiment experimental research frequency gathered hypothesis testing identified individual instrument interpretation interview investigation isometric exercise journal level of measurement level of significance literature review mean measure median muscle muscular non-experimental research Non-parametric tests normal curve null hypothesis observations outcome parametric particular patients performing Phys Ther physical therapy population posttest pretest procedures proposal quadriceps quantities questionnaire questions ranks ratio reader recorded reliability research methods research problem responses scientific selected sources specific standard deviation statements statistical student sum of squares Table techniques therapists Thurstone scale tion trait treatment Type I error validity variation ΣΧ