The effect of balance confidence and context on functional reach ability in healthy older adults.

Objective: To assess functional reach (FR) ability in 4 contexts in older adults (≥ 60 years) with high balance confidence (HBC) and low balance confidence (LBC).

Design: A repeated-measures design was used to compare 2 groups in 4 reaching contexts.

Setting: Community setting.

Concurrent validity and reliability of two-dimensional video analysis of hip and knee joint motion during mechanical lifting.

Movement patterns used during mechanical lifting are usually assessed subjectively by clinicians as a stoop or squat based on visual estimation of joint motion and position. Two-dimensional (2D) video analysis has the potential to objectively measure joint motion during a mechanical lifting task. This study investigated concurrent validity, intrarater, interrater, and test-retest reliability of 2D video analysis using Dartfish software for the measurement of sagittal plane angles at the hip and knee during mechanical lifting.