Assessment of Countermovement Jump Performance in First Position (Sauté) in Healthy Adults.

Background:: Prior studies have examined muscle power via the countermovement jump (CMJ). Studies to date have examined neither the reliability nor the construct validity of the ballet first position CMJ (hips in lateral rotation, toes facing away from one another, legs straight) as a measure of power.

Hypotheses:: There would be (1) good interrater reliability in the visual assessment of the best-quality first position CMJ (κ ≥ 0.

A pilot study to determine the effect of one physical therapy session on physical activity levels for individuals with chronic low back pain.

Background: A pilot study was conducted to quantify the effect size of changes in physical activity after of one session of physical therapy for individuals with chronic low back pain and to determine factors that predict daily sedentary activity time.

Methods: Fourteen subjects with at least 3 days of physical activity accelerometer data were analyzed before and after one session of physical therapy. Data was analyzed using 1-tailed, paired t-tests with level of significance set at 0.