Activities of daily living in older community-dwelling persons: a systematic review of psychometric properties of instruments.

Background: Activities of daily living (ADL) are often used as predictors of health and function in older persons. This systematic review is part of a series initiated by the European Network for Action on Ageing and Physical Activity (EUNAAPA).

Aim: To assess psychometric properties of ADL instruments for use in older populations.

Validity and reproducibility of motion sensors in youth: a systematic update.

Purpose: To review recently published studies on the reproducibility, validity, and feasibility of motion sensors used to assess physical activity in healthy children and adolescents (2-18 yr).

Methods: On October 2004, a systematic literature search in PubMed, EMBASE, and PsycINFO was performed. This search has been updated on October 2007.