Patients with chronic airflow limitation (CAL) such as chronic bronchitis, chronic asthma and emphysema, often report breathlessness with routine daily tasks which involve upper limb activities. To date, however, there is no standard upper limb exercise test available for the assessment of patients with CAL and to evaluate the effects of therapeutic interventions. therefore, the aim of the present study was to develop an unsupported incremental upper limb exercise test (UIULX test) for the assessment and management of patients with CAL. Repeated measures, quasi-experimental design was used with nine patients with CAL (mean age 61.6 years, mean predicted %FEV
1 40.0%). The within-subject reproducibility of the symptom-limited UIULX test in patients with CAL was assessed by performing the UIULX test on three occasions. The UIULX test involved lifting a light weight bar at a constant rate (30 rpm) using an incremental protocol during which the vertical lift increased by 15 cm every minute. The weight of the bar was progressively increased once subjects reached the maximal vertical height. Endurance time, the pattern and magnitude of the cardiorespiratory responses, and the intensity of dyspnoea and rating of perceived exertion (RPE) at the termination of the test were examined. Intraclass correlation coefficients showed high reproducibility for endurance time (0.976), VO
2 max (0.954), maximal minute ventilation (0.957), maximal respiratory frequency (0.950), maximal tidal volume (0.934), HR max (0.914). High reproducibility was also demonstrated for the pattern of increases VO
2, VCO
2, minute ventilation, respiratory frequency, tidal volume and HR. The intensity of dyspnoea and RPE for the upper limbs at the termination of the test did not show significant differences among the three trials. The UIULX test is reproducible in both patients with CAL and normal subjects. Further study to determine the validity of the unsupported upper limb exercise test is necessary before implementation in the clinical setting.
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