Comparison of cervical vertebral separation in the supine and seated positions using home traction units.

This study was performed for the purpose of comparing the magnitude of cervical vertebral separation during cervical traction in supine and seated positions using home traction units. A repeated measures design with two within-subject factors (type of traction and time) was used. Seventeen asymptomatic volunteers received cervical traction in seated and supine position.

Hip abductor weakness and lower extremity kinematics during running.

Objective: To determine if females with hip abductor weakness are more likely to demonstrate greater knee abduction during the stance phase of running than a strong hip abductor group.

Study Design: Observational prospective study design.

Setting: University biomechanics laboratory.

Movement-based feedback may reduce spinal moments in male workers during lift and lowering tasks.

Background And Purpose: To assess if lifting performance can be modified and spine stresses reduced in workers who perform repetitive material-handling jobs in a warehouse environment via a novel real-time, movement-based feedback training protocol.

Method: A pre-test/post-test group study design was used with a control group. Data were collected in a warehouse setting and analysed in a university setting.

Consistency of the talk test for exercise prescription.

Introduction/purpose: The Talk Test has been shown to be well correlated with the ventilatory threshold, with accepted guidelines for exercise prescription, and with the ischemic threshold. As such, it appears to be a valuable although quite simple method of exercise prescription. In this study, we evaluate the consistency of the Talk Test by comparing responses during different modes of exercise.

Electromyographic activity and applied load during seated quadriceps exercises.

Purpose: The aim of this study was to quantify and compare mean quadriceps muscle activity and applied load for eight seated quadriceps exercises using four types of resistance.

Methods: Using surface electromyography (EMG), the right rectus femoris (RF), vastus lateralis (VL), and vastus medialis oblique (VMO) muscles of 52 university students aged 23.5 +/- 3.