Promotion and Support for Physical Activity Maintenance Post Total Hip Arthroplasty

The mean number of steps completed per day assessed by an accelerometer during a 7-day period.

The mean number of steps completed per day assessed with an accelerometer during a 7-day period.

The 6-minute walk test is a performance-based test of physical function which covers the domain ability to walk over longer distances. It is also a proxy measure of endurance/aerobic capacity. This test measures the walking distance completed in 6 minutes on a 30-m flat course. The participant is instructed to walk as far as possible in 6 minutes. The 6-minute walk test is included in a set of performance-based test recommended by the Osteoarthritis Research Society International that represents typical activities relevant to individuals following total joint arthroplasties.

The 30-s chair-stand test is a performance-based test of physical function which covers the domains: sitting and getting in/out of a seated position. It is also a proxy measure for assessing lower body muscle strength and power. This test measures number of chair stands completed in 30 seconds. The participant is instructed to complete as many chair stands as possible in 30 seconds with arms across the chest. The 30-s chair-stand test is included in a set of performance-based test recommended by the Osteoarthritis Research Society International that represents typical activities relevant to individuals following total joint arthroplasties.

The stair-climb test is a performance-based test of physical function which covers the domains: mobility and climbing. It is also a proxy measure for assessing lower extremity muscle strength and power and balance. This test measures the time (best of two trials) to ascend and descend a flight of 10 steps. The participant is instructed to ascend and descend the flight of stairs as fast as possible. The stair-climb test is included in a set of performance-based test recommended by the Osteoarthritis Research Society International that represents typical activities relevant to individuals following total joint arthroplasties.

Assessed by the Hip disability and Osteoarthritis Outcome Score (HOOS), the function in daily living (ADL) subscale. The last week is taken into consideration when answering the 17 questions (5 Likert boxes) included in this subscale. A normalized score (0-100, worst to best) can be calculated.

Assessed by the Hip disability and Osteoarthritis Outcome Score (HOOS), the pain subscale. The last week is taken into consideration when answering the 10 questions (5 Likert boxes) included in this subscale. A normalized score (0-100, worst to best) can be calculated.

The participants will be asked to compare their current global wellbeing with the pre-surgery state on a 200 mm visual analog scale with anchors being: -100 = "Much worse"; 0 = "No changes"; 100 = "Much better".

The mean number of steps completed per day assessed with an accelerometer during a 7-day period.

The mean number of steps completed per day assessed with an accelerometer during a 7-day period.

Assessed by the EuroQol 5-Dimension Questionnaire (EQ-5D-3L), a generic instrument with 5 questions that comprises 5 dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression) with 3 levels: no problems, some problems, and extreme problems, where each dimension is assigned a score from 1 to 3, which can be converted into a single summary index value (based on the Danish EQ-5D Time Trade-Off (TTO) value set; 1 corresponds to the best possible health status, <0 represents the worst possible health status)

The mean number of steps completed per day assessed with an accelerometer during a 7-day period.

The mean number of steps completed per day assessed with an accelerometer during a 7-day period.

The 6-minute walk test is a performance-based test of physical function which covers the domain ability to walk over longer distances. It is also a proxy measure of endurance/aerobic capacity. This test measures the walking distance completed in 6 minutes on a 30-m flat course. The participant is instructed to walk as far as possible in 6 minutes. The 6-minute walk test is included in a set of performance-based test recommended by the Osteoarthritis Research Society International that represents typical activities relevant to individuals following total joint arthroplasties.

The 30-s chair-stand test is a performance-based test of physical function which covers the domains: sitting and getting in/out of a seated position. It is also a proxy measure for assessing lower body muscle strength and power. This test measures number of chair stands completed in 30 seconds. The participant is instructed to complete as many chair stands as possible in 30 seconds with arms across the chest. The 30-s chair-stand test is included in a set of performance-based test recommended by the Osteoarthritis Research Society International that represents typical activities relevant to individuals following total joint arthroplasties.

The stair-climb test is a performance-based test of physical function which covers the domains: mobility and climbing. It is also a proxy measure for assessing lower extremity muscle strength and power and balance. This test measures the time (best of two trials) to ascend and descend a flight of 10 steps. The participant is instructed to ascend and descend the flight of stairs as fast as possible. The stair-climb test is included in a set of performance-based test recommended by the Osteoarthritis Research Society International that represents typical activities relevant to individuals following total joint arthroplasties.

Assessed by the Hip disability and Osteoarthritis Outcome Score (HOOS), the function in daily living (ADL) subscale. The last week is taken into consideration when answering the 17 questions (5 Likert boxes) included in this subscale. A normalized score (0-100, worst to best) can be calculated.

Assessed by the Hip disability and Osteoarthritis Outcome Score (HOOS), the pain subscale. The last week is taken into consideration when answering the 10 questions (5 Likert boxes) included in this subscale. A normalized score (0-100, worst to best) can be calculated.

The participants will be asked to compare their current global wellbeing with the pre-surgery state on a 200 mm visual analog scale with anchors being: -100 = "Much worse"; 0 = "No changes"; 100 = "Much better".

Assessed by the Physical Activity Scale for the Elderly (PASE) that assesses the level of physical activity (occupational, household and leisure activities) over a one-week period. The score range is 0-400 or more (lowest to highest physical activity-level).

Assessed by a question "How physically active are you now?" from the Copenhagen City Heart Study (level 1-4; 1 = almost entirely sedentary, 2 = light physical activity (PA) for 2-4 h per week, 3 = light PA >4 h per week or more vigorous PA for 2-4 h per week, 4 = more vigorous PA >4 h per week or regular heavy exercise or competitive sports several times per week).

Assessed by the EuroQol 5-Dimension Questionnaire (EQ-5D-3L), a generic instrument with 5 questions that comprises 5 dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression) with 3 levels: no problems, some problems and extreme problems and a separate 20cm visual analog scale with anchors being: 0="worst imaginable health state"; 100="best imaginable health state".

Assessed by the exercise self-efficacy scale, which consists of 5 questions concerning the confidence of perceived ability to participate in exercise despite barriers as bad mood, bad weather, tiredness or lack of time (total score range, 5-25, worst to best).

Assessed in conjunction with the stair-climbing test. After a practice trial, the participants are asked to rate their level of certainty that they can complete the stair-climbing task 2, 4, 6, 8, and 10 times without stopping (total score 0-100 (worst to best)).

Assessed by the Outcome expectancy for exercise scale (OEE-2), an interviewer administered questionnaire with 13 questions regarding both positive and negative expectations associated with exercise. A positive outcome expectancy subscale, a negative outcome expectancy subscale and a total score can be calculated (more positive outcome expectations for exercise with higher score).

Assessed by the Hip disability and Osteoarthritis Outcome Score (HOOS), the other symptoms subscale. The last week is taken into consideration when answering the 5 questions (5 Likert boxes) included in this subscale. A normalized score (0-100, worst to best) can be calculated.

Assessed by the Hip disability and Osteoarthritis Outcome Score (HOOS), the function in sport and recreation subscale. The last week is taken into consideration when answering the 4 questions (5 Likert boxes) included in this subscale. A normalized score (0-100, worst to best) can be calculated.

Assessed by the Hip disability and Osteoarthritis Outcome Score (HOOS), the hip-related quality of life subscale. The last week is taken into consideration when answering the 4 questions (5 Likert boxes) included in this subscale. A normalized score (0-100, worst to best) can be calculated.

The mean number of steps completed per day assessed with an accelerometer during a 7-day period.