Objective The ‘single-item measure’ was developed as a short self-report tool for assessing physical activity. The aim of this study was to test the criterion validity of the single-item measure ...

The purpose of this study was to review various physical activity measures, both subjective and objective. The activity measures were then evaluated for their ability to aid in research and practice.

Background Injury results in a limitation of activity participation. Treatment of injury is designed to return the patient to as a high level of activity as desired. To design an activity measure that ...

Metabolism comprises the crucial, life-sustaining chemical reactions occurring within cells and tissues. Mitochondria, in particular, are critical hubs for such biochemical transformations. Although ...

Lupus disease complexity and variability makes accurate measurement of disease activity very challenging. Measurement of disease activity in lupus is central to clinical research and clinical trials ...

How do scientists peer into the brain to better understand what is happening, where, and why? By taking advantage of the brain’s electromagnetic properties or by sending radioactive markers into the ...