Telomere length in COPD: Relationships with physical activity, exercise capacity, and acute exacerbations

Physical activity and exercise capacity in patients with moderate COPD exacerbations.

Little is known about changes in physical activity during moderate (out-patient managed) exacerbations.6-min walking distance (6MWD) was measured during 50 exacerbations when the patients were stable, and at 3 and 7 days post-exacerbation presentation. At similar time points, quadriceps maximum voluntary contraction (QMVC) was measured during 47 different exacerbations. Physical activity (Sense...

Acute Exacerbations in Copd

Skeletal muscle adiposity is associated with physical activity, exercise capacity and fibre shift in COPD

Quadriceps muscle phenotype varies widely between patients with chronic obstructive pulmonary disease (COPD) and cannot be determined without muscle biopsy. We hypothesised that measures of skeletal muscle adiposity could provide noninvasive biomarkers of muscle quality in this population. In 101 patients and 10 age-matched healthy controls, mid-thigh cross-sectional area, percentage intramuscu...

Acute COPD exacerbations.

Exacerbations are important events for patients with chronic obstructive pulmonary disease (COPD) and key outcomes in COPD studies and trials. Exacerbations have an impact on health status and contribute to disease progression, and exacerbation prevention is a key goal of therapy in COPD. A majority of COPD exacerbations are triggered by respiratory viral infections and/or bacterial infections....

Leukocyte telomere length in healthy Caucasian and African-American adolescents: relationships with race, sex, adiposity, adipokines, and physical activity.

OBJECTIVE To examine the relationships of race, sex, adiposity, adipokines, and physical activity to telomere length in adolescents. STUDY DESIGN Leukocyte telomere length (T/S ratio) was assessed cross-sectionally in 667 adolescents (aged 14-18 years; 48% African-Americans; 51% girls) using a quantitative polymerase chain reaction method. Generalized estimating equations analyses were perfor...