Changes in Exercise Capacity After Physical Training in Individuals With COPD and Different Body Composition...

Area of Science:

• Pulmonary Medicine
• Exercise Physiology
• Geriatrics

Background:

• Chronic Obstructive Pulmonary Disease (COPD) patients often exhibit extra-pulmonary manifestations, including abnormal body composition.
• Exercise training is beneficial for COPD patients, particularly for enhancing exercise capacity.
• The differential impact of exercise training on exercise capacity across various body composition phenotypes in COPD remains unclear.

Purpose of the Study:

• To investigate if individuals with COPD classified into different body composition phenotypes exhibit varying degrees of improvement in exercise capacity following an exercise training program.
• To analyze the relationship between body composition phenotypes and changes in functional exercise capacity after high-intensity exercise training in COPD patients.

Main Methods:

• A 3-month high-intensity exercise training program was administered to individuals with COPD.
• Body composition was assessed using electrical bioimpedance before and after the intervention.
• Functional exercise capacity was measured by the 6-minute walk test (6MWT); participants were categorized into four phenotypes: normal, sarcopenic, obese, and obese-sarcopenic.

Main Results:

• Significant interaction was observed between body composition phenotypes and the variation in fat mass (P = .05) post-training.
• No significant interaction was found between 6MWT improvement and body composition phenotypes.
• Sarcopenic and obese-sarcopenic individuals demonstrated significant improvements in 6MWT distance and %predicted, unlike the other phenotypes.

Conclusions:

• Exercise training influences fat mass variation differently across COPD body composition phenotypes.
• The presence of sarcopenia, whether isolated or combined with obesity, is associated with significant and clinically relevant improvements in the 6-minute walk test (6MWT) in COPD patients.