EMG pelvic floor activity will be measured using an intravaginal electrode at rest, following a brief maximum voluntary contraction over 1 second and a sustained maximum voluntary contraction over 20 seconds to determine the strength and timing of pelvic floor muscle activity in subjects with chronic cough compared to healthy controls. In order to investigate pelvic floor muscle activity during forced expirations and coughing EMG recording will be recorded with thoracic movement during huffing and coughs and during the preceding inspiration.