Oxygen cost of walking, physical activity, and sedentary behaviours in rheumatoid arthritis

• DOI: 10.3109/03009742.2013.802009
• Publication Date: 2013-07-15T08:47:08Z
• Authors: L Paul; D Rafferty; R Marshall-McKenna; JMR Gill; I McInnes; D Porter; J Woodburn
• Keywords: Depression; Sitting

Objectives: To evaluate the oxygen cost of gait and measure physical activity profiles, including time spent sedentary, in people with rheumatoid arthritis (RA) matched controls.Method: We recruited 19 RA controls for age, sex, body mass index (BMI). Demographic details clinical characteristics population were recorded. Oxygen uptake per metre walked (oxygen cost) was measured laboratory using a portable gas analyser. Activity profiles number steps day, sedentary (sitting or lying down), intensity walking recorded over 5 days an monitor, from which classified by categories. Levels pain, fatigue, anxiety, depression recorded.Results: People slower self-selected speed (p < 0.001) than but there no difference = 0.992) between groups. took fewer 0.001), had increased 0.029) lower at cadences commensurate moderate to vigorous (MVPA) compared 0.001). Pain, higher group (all p 0.001).Conclusions: The this cohort similar that increase reduction MVPA. Clinical symptoms such as depression, fatigue may explain changes activity/sedentary behaviours require further investigation.