Despite evidence on the psychometric properties of sit-to-stand (STS) tests in chronic respiratory disease (CRD) populations, most studies have been conducted face-to-face. Given the recent emphasis on virtual pulmonary rehabilitation (VPR), there is a need to identify reliable and valid exercise tests that can be delivered in home-based settings, either supervised remotely or self-administered by patients. A repeated-measures crossover design will be used to test the home-based administration of STS tests. The 30-second STS (30-s STS) and 1-minute STS (1-min STS) tests will be randomly administered across three test conditions (centre-based, remotely supervised, and self-administered). Data will summarize the feasibility of remotely supervised and self-administered STS tests and compare the performances of centre-based tests with remotely supervised and self-administered versions of STS tests in patients with CRD.
Physician diagnosis of chronic respiratory disease (e.g., Chronic Obstructive Pulmonary Disease, Interstitial Lung Disease, Asthma).
Male and female patients ≥18 years of age.
Able to perform at least 5 repetitions in the 1-min sit-to-stand test without use of upper extremities.
Access to a portable pulse oximeter at home to measure heart rate and oxygen saturation.
Lower limb surgery in the preceding 3 months.
Medically unstable to perform exercise tests (e.g., no exacerbation in the preceding two weeks).
Predominant neurological or musculoskeletal limitations to completing sit-to-stand.
At risk of falling during sit-to-stand due to impaired balance, as indicated in their clinical record, and/or PR assessment.
Crossover
Sit-to-Stand Test (STS)
Other interventionThe 30-s and 1-min STS tests are reliable, valid, and responsive tests for measuring functional exercise capacity in patients with lung disease. For the STS tests that are centre-based or supervised remotely, investigators will collect the total number of repetitions on the 30-s and 1-min STS tests, as well as the number and duration of rests within and between tests.
30 second Sit-to-Stand Test
The 30-s and 1-min STS tests are reliable, valid, and responsive tests for measuring functional exercise capacity in patients with lung disease. For the STS tests that are centre-based or supervised remotely, investigators will collect the total number of repetitions on the 30-s and 1-min STS tests, as well as the number and duration of rests within and between tests. Scores on the STS tests will be recorded using the data collection form.
1 minute Sit-to-stand Test
The 30-s and 1-min STS tests are reliable, valid, and responsive tests for measuring functional exercise capacity in patients with lung disease. For the STS tests that are centre-based or supervised remotely, investigators will collect the total number of repetitions on the 30-s and 1-min STS tests, as well as the number and duration of rests within and between tests. Scores on the STS tests will be recorded using the data collection form.
Oxygen Saturation (Sp02)
Oxygen saturation (Sp02) will be measured using a finger pulse oximeter before and after the 30-s and 1-min STS. Self-monitoring using remote pulse oximetry has been shown to be feasible and accurate in CRD populations. The oximeter will provide a printout of values reflecting oxygen level, which will be transcribed to a data collection form. Patients will be asked to use their own pulse oximeter, and the make and model will be recorded by study staff.
Heart Rate
Heart rate will be measured using a finger pulse oximeter before and after the 30-s and 1-min STS tests. Self-monitoring using remote pulse oximetry has been shown to be feasible and accurate in chronic respiratory disease populations. The oximeter will provide a printout of values reflecting HR, which will be transcribed to a data collection form. Patients will be asked to use their own pulse oximeter, and the make and model will be recorded by study staff.
Modified Borg Scale
The Modified Borg Dyspnea scale is a self-reported measure of one's difficulty breathing upon exertion. The instrument provides a standard method for patients to select ratings of dyspnea on a scale based on descriptors that correspond to specific numbers. At the start and at the end of each STS test, subjects will rate their perceived rate of dyspnea ("difficulty breathing") using the modified Borg Scale.
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