Mechanical Evaluation of the Resistance of Theraband CLX.

Context: Calculating the resistance provided by elastic resistance is essential with the aim of adjusting the load and controlling the progression of the exercises in programs using elastic resistance. This study aimed (1) to establish a model of the force elongation for CLX bands; (2) to examine whether these models are altered by different aspects of band elongation: the phase of elongation and shortening (concentric and eccentric phases), the elongation speed, and the initial resting length; and (3) to determine the resistance value for 100% of elongation in each color and to compare it with the values reported by Theraband.

Design: Cross-sectional.

Validity and Reliability of a New Optoelectronic System for Measuring Active Range of Motion of Upper Limb Joints in Asymptomatic and Symptomatic Subjects.

The aim of this study was to evaluate the validity of the Veloflex infrared dynamic angle-meter (Veloflex-IDA) and the intra- and inter-rater reliability when measuring the ranges of motion (ROMs) of the upper limb joints. Thirty-five healthy and 20 symptomatic participants were evaluated. Twelve upper limb movements were measured in two sessions with the Veloflex-IDA, which is a device composed of a camera that tracks the trajectory of retro-reflective markers.