Chronic obstructive pulmonary disease is a disease characterized by airflow limitation that is not fully reversible. Weight loss occurs when energy intake is inadequate to meet energy expenditure. One possible reason for weight loss in patients with COPD is altered taste sensitivity. A study of 22 patients with a diagnosis of COPD was studied with the aim to determine whether there were taste recognition threshold differences between the beginning and end of a pulmonary rehabilitation (PR) programme in patients with COPD. Taste sensitivity was evaluated using the filter-paper disc method for 4 taste stimuli. Taste stimuli were salty, sweet, sour, and bitter tastes.
Taste sensitivity was evaluated before and after pulmonary rehabilitation using the taste recognition threshold. Results showed that Following pulmonary rehabilitation, the 6MWD, COPD assessment test, salty recognition threshold, sweet recognition threshold and bitter recognition threshold improved significantly, whereas there were no significant improvements in body mass index, fat mass index, fat-free mass index or sour recognition threshold.