Impact of Chair Seat Height on the 1-Minute Sit to Stand Test Performance in Chronic Obstructive Pulmonary Disease

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

55 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-09-16

Study Completion Date

2021-03-30

Brief Summary

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The 1-minute sit to stand (1-min STS) test is a standardized test which is used to examine exercise capacity in patients with chronic obstructive pulmonary disease (COPD). The chair seat height used is standardized to 46-48 cm. Using a standard seat height for all patients - irrespective of their body height - may lead to invalid estimates of functional exercise capacity. The objective of this study is to assess whether there is a difference in repetitions during the 1-min STS test if the seat height is adjusted to 90° knee joint angle or the standard height chair of 46 cm is used.

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Detailed Description

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In a single-center, randomized crossover study, the investigators aim to elucidate whether there is a difference in repetitions during the 1-min STS test if the seat height is adjusted to 90° knee joint angle or the standard height chair of 46 cm is used.

Patients with COPD referred for pulmonary rehabilitation will be invited to perform one standardised- (chair seat height 46cm) and one individualized (chair seat height adapted to 90° knee flexion) 1-min STS test on two different days in random order.

The tests will be performed after patients are familiarised with the 1-min STS testing procedure and learning effects can be excluded.

Conditions

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COPD Chronic Obstructive Pulmonary Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

OTHER

Blinding Strategy

SINGLE

Participants

Study Groups

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1-min STS test: chair seat height adjusted to 90° knee flexion

In this experimental condition, the patient performs the 1-minute sit to stand test on an individually adjusted seat height of 90° knee joint flexion.

Group Type EXPERIMENTAL

1-min STS test: adjusted

Intervention Type OTHER

Individually adjusted chair seat height of 90° knee joint flexion

1-min STS test: chair seat height standardized of 46cm

In this experimental condition, the patient performs the 1-minute sit to stand test on a standard height chair of 46cm.

Group Type ACTIVE_COMPARATOR

1-min STS test: standardized

Intervention Type OTHER

Standardized chair seat height of 46 cm

Interventions

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1-min STS test: adjusted

Individually adjusted chair seat height of 90° knee joint flexion

Intervention Type OTHER

1-min STS test: standardized

Standardized chair seat height of 46 cm

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patients with diagnosed COPD according to a forced expiratory volume in 1s (FEV1) / forced vital capacity (FVC) ratio below the lower limit of normal

Exclusion Criteria

* Patients who are not able to bend their knees while sitting on a standard chair (i.e., knee flexion less than 90°)
* Patients who are not able to understand the instructions of the 1-min STS test, either of language or cognitive reasons
* Patients who are unable to perform the STS test due to functional disability (i.e., being not able to rise from a chair without hand support), previous surgery, or pain according to the judgement of the responsible physician.
* Patients who did not sign the informed consent form

Eligible Sex

ALL

Accepts Healthy Volunteers

No