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- Dufvenberg, Marlene, 1961-
(författare)
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Adolescent Idiopathic Scoliosis : Postural Stability, Prognostic factors and Impact of Conservative Treatments on Radiologic, Clinical and Self-Reported Outcomes
- 2024
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Background: Adolescent idiopathic scoliosis (AIS) is a three-dimensional distortion of spinal curvature of unknown cause that develops during puberty. If the frontal plane curvature exceeds a Cobb angle of 24°, full-time bracing is recommended to prevent curve progression, negative health consequences or need for surgery. However, many patients decline full-time bracing, and limited evidence exists regarding alternative conservative treatments. Increasing knowledge of risk factors enables better identification of high-risk patients, thereby reducing the risk of over- or undertreatment. The overall aim of this thesis was to evaluate evidence of association between scoliosis and postural stability to inform a potential treatment target, to investigate the effectiveness of three alternative conservative treatments for patients who declined full-time bracing, and to develop a prognostic model for future risk of increased curvature in AIS. Methods: Data collection is based on one systematic literature review and meta-analysis, and one randomised controlled trial (RCT) for patients with AIS. In Paper I, literature was reviewed, and utilized posturography data to assess static postural stability to identify potential differences between patients with AIS and the control group (CON). In Papers II and III, patients were randomly assigned to either physical activity combined with hypercorrective Boston scoliosis night brace (NB), scoliosis-specific exercises (SSE), or a control group with physical activity alone (PA). Effects on trunk rotation, Cobb angle, self-reported physical activity, spinal appearance, and health-related quality of life were evaluated. Likewise, adherence, capability, and motivation in performing self-managed treatment were assessed. Follow-up was conducted at 6 months intervals until endpoint. The endpoint was defined as non-progression if the curvature increased by 6° or less at skeletal maturity, i.e., less than 1cm of growth over 6 months, or progression if the curvature increased by more than 6° before skeletal maturity. In Paper IV, data from the RCT were used for a longitudinal cohort analysis, developing and validating a prognostic model using Cox Proportional Hazards survival analysis. Results: Paper I found reduced postural stability in AIS patients compared to CON with increased sway area, mediolateral and anteroposterior range, and a posterior shift in the sagittal plane. The RCT included 135 individuals, mean age of 12.7 years (SD1.4) and Cobb angle of 31° (SD5.3). At 6 months, patients reported high adherence (72-95%) and motivation (65-92%) to the treatment, particularly in the NB group. Both the SSE and PA groups increased physical activity levels compared to the NB group. At endpoint, adherence remained adequate, but better in the NB and PA groups compared with the SSE group (50-89%). Adherence increased with higher capability and motivation, which explained 53% of the variance in adherence at endpoint. The SSE group had higher proportion of moderate problems in mobility and usual activities than the NB and PA groups, with no other clinically relevant between-group differences. The prognostic model (n=127) for curve progression showed acceptable discriminative ability (0.791), with risk factors including skeletal immaturity, larger major curve, and worsening spinal appearance. The model was adjusted for treatment exposure, as NB reduced the risk of curve progression. Conclusions: Patients with AIS have decreased postural stability with a posterior positional shift. Treatment evaluation at endpoint showed few between-group differences. However, the SSE group had higher proportion of moderate problems in mobility and usual activities compared to the other groups. Treatment adherence was adequate, but better in the NB and PA groups. Higher capability and motivation increased long-term adherence to the treatment. The treatment alternatives could be considered as the first option following a clinical decision on treatment. Including self-reported spinal appearance as a risk factor in the prognostic model may be clinically important for predicting which patients are at risk of curve progression.
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| 2. |
- Borg, Sabina, 1982-
(författare)
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Exercise-Based Cardiac Rehabilitation in Patients with Coronary Artery Disease : Attendance, Adherence and the Added Value of a Behavioural Medicine Intervention
- 2021
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Background: Coronary artery disease (CAD) is the leading global cause of death. After an index event related to CAD, exercise-based cardiac rehabilitation (exCR) is strongly recommended as part of the secondary prevention. Despite the well-established beneficial effects of exCR in patients with CAD, attendance at and adherence to the programme are low, and remain a matter of major concern. One strategy that may increase adherence and rehabilitation outcomes in patients with CAD is to add a behavioural medicine intervention to routine exCR care. The added value of such interventions needs to be further explored. Although several factors associated with non-attendance at exCR appear to be similar between different countries, patterns of attendance may differ due to differences in contextual aspects. The factors that affect attendance at exCR in a Swedish context remain to be explored.Overall aim: To investigate barriers for exCR attendance and to evaluate the added value of a behavioural medicine intervention in physiotherapy on exercise adherence and rehabilitation outcomes in patients with CAD.Methods: The three papers in this thesis are based on two studies of patients with CAD, one registrybased cohort study of 31,297 patients included from the SWEDEHEART registry (Paper I), and one randomised controlled trial of 170 patients included at a Swedish university hospital (Papers II and III). In the first paper, several individual and structural variables were compared for attenders and nonattenders, using multivariable analysis in a logistic regression model. In Papers II and III, patients were randomised 1:1 either to a behavioural medicine intervention in physiotherapy in addition to routine exCR care or to routine exCR care alone for four months. The behaviour change techniques used in the behavioural medicine intervention – specific goal-setting, re-evaluation of the goals, and selfmonitoring and feedback – were based on control theory. Outcome assessment took place at baseline, four and 12 months, and included physical fitness, psychological outcomes and health-related quality of life. Exercise adherence was evaluated at the end of the four-month intervention. An intention-to-treat and a per-protocol analysis were performed.Results: Individual and structural factors associated with non-attendance at exCR in a Swedish context were identified as having a distance greater than 16 km to the hospital, belonging to a county hospital, having a higher burden of comorbidities, being male, and being retired. Exercise adherence was higher for patients who received the behavioural medicine intervention in physiotherapy together with routine exCR (31%) than it was for those who received routine exCR care alone (19%). Rehabilitation outcomes did not differ significantly between the two groups, either between baseline and four months or between four and 12 months. Both groups improved significantly in all measures of physical fitness, and in several measures of health-related quality of life and anxiety at the four-month follow-up. Sufficient enablement remained for patients in both groups at the 12-months follow-up.Conclusions: Distance to the hospital was the strongest predictor for non-attendance at exCR in a Swedish context. The individual factors associated with non-attendance at exCR identified in this thesis confirm previous results, with the exception that female gender was associated with a higher attendance at exCR. The results of this thesis confirm what others have pointed out: it is challenging to achieve behavioural change in patients with the aim to improve rehabilitation outcomes. Even though adherence was higher when a behavioural medicine intervention was added, it was low in both groups. The current behavioural medicine intervention in physiotherapy did not give any improvements over routine exCR care alone in physical fitness, psychological outcomes or health-related quality of life. As such, there is still room for further development and evaluation of behavioural medicine interventions within the context of exCR. A greater tailoring of these interventions to individual needs in a broader population of patients with CAD is suggested.
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| 3. |
- Schröder, Karin, 1966-
(författare)
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Implementing BetterBack – a Best Practice Physiotherapy Healthcare Model for Low Back Pain : Clinician and Patient Evaluation
- 2021
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Background: Low back pain (LBP) occurs in all ages, and first-line treatment by physiotherapists (PTs) is common. However, national evidence-based LBP clinical guidelines are still lacking in Sweden. To facilitate guideline uptake, we developed and with a multifaceted strategy implemented a best practice physiotherapy healthcare model (BetterBack☺ MoC) with the aim of supporting management of LBP in primary care. The overall aim of this thesis was to evaluate a multifaceted implementation strategy and a best practice physiotherapy healthcare model for LBP.Methods: This thesis is based on one methodological study and three experimental trials with PTs and patients with LBP. In Paper I a mixed method design was used to translate, tailor, validate and feasibility-test the Determinants of Implementation Behaviour Questionnaire (DIBQ). This tailored DIBQ Questionnaire (DIBQ-t) was used to evaluate potential barriers/facilitators during the implementation process together with evaluation of PTs’ confidence, attitudes and beliefs in managing LBP. In a stepped cluster randomised controlled trial, PTs and their patients in three clusters were allocated to intervention group (after implementation of BetterBack☺ MoC) or control group (routine physiotherapy care). The proportions of guideline-adherent care were compared between groups (Paper III). This evaluation was based on PTs’ adherence to eight clinical practice recommendations and three clinical practice quality indices (CPQI). The overall CPQI containing the five most prioritised recommendations are: no referral to specialist care; no referral to medical imaging for benign LBP; use of educational interventions; use of exercise interventions; and no use of non-evidence-based physiotherapy. Finally, in Paper IV patient-reported outcome measures (PROMs) were compared between intervention (after the implementation of BetterBack☺ MoC) and routine care. In Paper IV an additional secondary analysis was performed, comparing PROMs based on whether or not PTs had delivered care that met all five criteria of the overall CPQI or not.Results: A tailored, feasible and valid questionnaire was developed, DIBQ-t to be used for evaluation of the implementation of LBP primary care programmes. After implementation workshop, PTs’ (n = 116) confidence increased, and PTs’ attitudes and beliefs shifted towards a more biopsychosocial orientation. PTs had high expectations of the BetterBack☺ MoC, which decreased after using the MoC. When evaluating received treatment for 500 patients with LBP, a more frequent delivery of guideline-adherent care was seen after implementation (n = 278) compared to routine care (n = 222). The overall CPQI containing the five prioritised recommendations was fulfilled in 59% of all patients in intervention versus 26% in routine care group. Analysis of adherence to specific recommendations showed a significantly improved use of stratification of number of PT visits and patient educational interventions, frequent use of exercise was maintained, and use of non-evidence-based treatment and medical imaging decreased after implementation. The primary outcome, i.e. referral to specialist consultation, was low in both groups, with no between-group differences. After implementation of the BetterBack☺ MoC, no between-group differences in PROMs were seen except for greater satisfaction with LBP care, greater improvement in illness perception and better health-related quality of life, compared with routine care. However, when PTs’ care adhered to all five CPQI criteria, a greater improvement of most patient-reported outcomes was seen compared to patient care that did not adhere to all five CPQI criteria. Conclusions: The implementation of a best practice physiotherapy healthcare model (BetterBack☺ MoC) for LBP improved both clinician and patient outcomes. PTs increased use of guideline-adherent care, confidence and biopsychosocial orientation in managing LBP. Patients reported improved satisfaction, illness perception and health-related quality of life. The implementation did not decrease referral to specialist consultation from an initial low level; nor did it improve patients’ disability and pain more than routine care. However, when guideline-adherent care was fulfilled, most PROMs improved. It is therefore important to highlight the importance of guideline-based primary care for improving patient-reported LBP outcomes.
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| 4. |
- Lindbäck, Yvonne, 1967-
(författare)
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Pre-surgery physiotherapy and pain thresholds in patients with degenerative lumbar spine disorders
- 2018
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Background: Patients scheduled for spinal surgery often experience long duration of pain, which may influence the pain-regulation system, function and health and have an impact on post-surgery outcome. Prehabilitation potentially augments functional capacity before surgery, which may have beneficial effects after surgery.Aim: The overall aim of the thesis is to study pre-surgery physiotherapy and somatosensory function in patients with degenerative lumbar spine disorders and to explore the patients’ experiences of pre-surgery physiotherapy.Methods: Somatosensory function was measured with quantitative sensory testing (QST). Pre-surgery physiotherapy was evaluated with patient-reported outcome measures (n = 197). Patients’ experiences of how symptoms are explained and their experiences of the influences on back-related health after pre-surgery physiotherapy were explored.Results: Half of the patients reported back or leg pain for more than 2 years. On a group level, the somatosensory profiles were within the reference range. On an individual level, an altered somatosensory profile was found in 23/105 patients, these were older, more often women, and reported higher pain, larger pain distribution and worse SF-36 MCS (mental health component summary). Patients with disc herniation, more sensitive to pressure pain in the hand presurgery, was associated with poorer function, self-efficacy, anxiety and depression score pre-surgery, worse function, self-efficacy and leg pain 3 months post-surgery and worse health related quality of life, self-efficacy, depression score 1 year postsurgery. The results for sensitivity for cold pain were similar, except that it even was associated with poorer function and pain 1 year post-surgery. The pre-surgery physiotherapy group had less back pain, better function, health, self-efficacy, fear avoidance score, depression score and physical activity level than the waiting-list group after the pre-surgery intervention. The effects were small. Both groups improved significantly after surgery, with no differences between groups, except that the higher physical activity level in the physiotherapy group remained at the 1-year follow-up. Only 58% of the patients reported a minimum of one visit for rehabilitation during the 1 year preceding the decision to undergo surgery. Patients experienced that pre-surgery physiotherapy had influenced symptoms, physical function, coping, well-being and social functioning to various degrees. Pre-surgery physiotherapy was experienced as a tool for reassurance and an opportunity to reflect about treatment and lifestyle. The patients mainly used biomedical explanatory models based on image reports to explain their backrelated symptoms. Both broader and more narrow, as well as lack of explanations of symptoms emerged. Further, wanting and sometimes struggling to be wellinformed about symptoms and interventions were described.Conclusions: Being more sensitive to pressure- and cold pain in the hand, as a sign of widespread pain pre-surgery, was associated with poorer function, pain and health at post-surgery in patients with disc herniation. Pre-surgery physiotherapy decreased pain, fear avoidance, improved health related quality of life; and it decreased the risk of a worsening in psychological well-being before surgery. The improvements were small, and improvements after surgery were similar for both groups. At the 1-year follow-up, the physiotherapy group still had a higher activity level than the waiting list group. The pre-surgery physiotherapy was well tolerated. Patients’ reported experiences also illustrates the influence on function, pain and health. Patients experienced that pre-surgery physiotherapy provided reassurance and gave time to reflect on treatments and lifestyle. Symptoms were mainly described in line with a biomedical explanatory model. Those using a broader explanation were confident that physiotherapy and self-management could influence their back-related symptoms.
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| 5. |
- Åhlund, Kristina, 1978-
(författare)
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Physical Fitness in Hospitalized Frail Elderly Patients
- 2020
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Demographic research shows that the proportion of older people in society is increasing. More people age well, but there are also more people getting old with disability and multimorbidity. The large diversity in functioning illustrates the heterogeneity of aging. Accelerated aging may lead to frailty, which is a geriatric syndrome, often used as a marker of biologic age and associated with decreased physiologic reserves, increased vulnerability and the risk of adverse health out- comes. Frail elderly people are frequent visitors within emergency hospital care and physical decline is common. Unfortunately, elderly patients with substantial multimorbidity are often excluded from clinical trials.Physical fitness comprises a set of measurable health- and skill-related outcomes, such as cardiorespiratory endurance and muscle strength. A decrease in physical fitness may affect the prognosis negatively. However, previous research indicates that it may be possible to reverse frailty and improve physical fitness. It is therefore of the utmost interest to identify frailty and study how care is best provided, in order to prevent, reduce and postpone adverse health consequences.The overall aim of this thesis is to study physical fitness in a group of frail elderly patients, within clinical hospital health care. The patients’ physical fitness will be evaluated and compared in different care settings during and after hospitalization. The aim is also to study the long-term consequences of changes in physical fitness in relation to mortality. To better understand the underlying factors for partici- pation in physical activity and exercise, patients’ perceptions of the phenomena will be explored.This thesis consists of four papers based on two studies comprising frail elderly patients with substantial multimorbidity, in connection with an in-hospital episode. Paper 1 was an observational study with a cross-sectional design (n=408). Different components of physical fitness were measured during an index hospital stay and the results showed that hospitalized frail elderly patients performed below previously described age-related reference values. Furthermore, physical fitness was associated with the degree of frailty, rather than the chronological age. Paper 2 was a prospective controlled trial, with two parallel groups. The patients included in the intervention group (n=206) were cared for at an emergency medical care unit providing care according to Comprehensive Geriatric Assessment and care (CGA). The control group (n=202) was cared for at conventional emergency medical care units. The multi-professional care approach at the CGA unit was shown to be beneficial, in terms of a greater proportion of patients who preserved or improved their function during the first three months after discharge from hospital, compared with conventional care. Paper 3 had a prospective approach when evaluating the association between physical fitness and oneyear mortality in those 390 patients discharged alive from a hospital care episode. The results showed that physical fitness during in-hospital care and the change in physical fitness during the first months after discharge were associated with one-year mortality.In Paper 4, the patients’ perspective in terms of physical activity and exercise was explored. The theme of “Meaningfulness and risk of harm in an aging body” emerged, followed by the three categories of physical activity as part of daily life, goals of physical activity and exercise and prerequisites for physical activity and exercise.These studies highlight the importance of a greater focus on physical fitness in hospitalized elderly patients. A careful assessment and a multi-professional approach may lead to beneficial results and better survival even in a group of frail elderly patients with severe multimorbidity. To increase physical activity and exercise in this group of patients, health care probably needs to improve the means of communicating the benefits and goals of exercise and facilitating them so that the risk of harm is reduced.
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