Effect of Land-Based Generic Physical Activity Interventions on Pain, Physical Function, and Physical Performance in Hip and Knee Osteoarthritis: A Systematic Review and Meta-Analysis

Moderate-To-Vigorous Physical Activity Independent of Stationary Time Is Associated With Better Functional Outcomes Over Four-Years in Individuals With or at Risk of Knee Osteoarthritis

INTRODUCTION

Osteoarthritis is a progressive joint disease that causes pain and disability, impairing physical function. Moderate-to-vigorous physical activity (MVPA) is recommended for knee osteoarthritis, while stationary time, independent of activity, may negatively impact health outcomes. We hypothesised that individuals with the highest MVPA and lowest stationary time would have better long-term function compared to those with the lowest MVPA and highest stationary time, as well as those with high levels of both MVPA and stationary time.

METHODS

Data included 442 participants, with an average age of 66-years and 190-females from the Osteoarthritis Initiative who wore accelerometers to assess MVPA and stationary time. Participants were grouped into tertiles of MVPA and stationary time normalised to total accelerometer wear time. The three groups were: highest activity, lowest stationary (HALS), highest activity, highest stationary (HAHS), and lowest activity, highest stationary (LAHS). Gait speed, the 400 m walk test, and five-time repeated chair stand were assessed at baseline and four-year follow-up.

RESULTS

Compared to the LAHS group, the HALS and HAHS groups had better performance in gait speed p < 0.001, d = 0.96-1.06, 400m walk time p < 0.001, d = 1.21-1.36, and five-time repeated chair stand p < 0.001, d = 0.54-0.81 at baseline and four-year follow-up. No differences were found between the HALS and HAHS groups at either timepoint.

CONCLUSION

Higher levels of MVPA were associated with better lower-limb functional outcomes in individuals with or at risk of knee osteoarthritis. Higher levels of stationary time do not negatively influence functional performance as long as higher numbers of MVPA levels (∼30 min/day) are achieved.

Effects of self-monitoring physical activity with wearable activity trackers on perceived joint function and health-related quality of life in people with hip and knee osteoarthritis: a secondary analysis of a cluster-randomised clinical trial

BACKGROUND

Osteoarthritis (OA) often leads to pain and functional limitations, impacting work and daily life. Physical activity (PA) is an important part of the treatment. Wearable activity trackers (WATs) offer a novel approach to promote PA but could also aid in finding a sustainable PA level over time. The aim of this secondary analysis was to examine the effects of self-monitoring PA with a WAT on perceived joint function and health-related quality of life in people with hip and knee OA.

METHOD

A two-armed cluster-randomized controlled trial (C-RCT) was conducted in southern Sweden including 160 individuals with hip or knee OA. The participants were cluster-randomized to a Supported Osteoarthritis Self-management Program (SOASP) with the addition of self-monitoring PA using a commercial WAT for 12 weeks (n = 86), or only the SOASP (n = 74). The outcomes include perceived joint function measured with HOOS/KOOS and health-related quality of Life (HRQoL) measured with EQ-5D-3L index and EQ VAS. Participants responded to the questionnaires at baseline and at follow-up after 3, 6 and 12 months. Statistical analyses involved linear mixed models, ANCOVA and paired t-test.

RESULTS

Participants with data from baseline and at least one follow-up were included in the analyses (n = 124). The analyses showed no statistically significant differences in changes between the groups in perceived joint function or HRQoL throughout the study period. Both groups improved in pain and symptoms, but the changes were small.

CONCLUSION

The addition of WAT-use did not have any effect on perceived joint function or HRQoL. The participants' relatively high baseline scores might have influenced the outcomes of this study. We suggest that future WAT-interventions target inactive people with OA and use devices that also captures other activities such as cycling or aquatic exercise.

TRIAL REGISTRATION

ClinicalTrials.gov, NCT03354091. Registered 15/11/2017.

Comparing selective and general hamstring stretching and strengthening for pain, disability, and quality of life in patients with primary knee osteoarthritis and varus deformity: A randomized clinical trial

BACKGROUND

A combination of hamstring stretching and strengthening exercises may benefit patients with knee osteoarthritis by promoting pain relief and disability improvement.

PURPOSE

The current study aimed to compare the effects of lateral hamstring strengthening and medial hamstring stretching with general hamstring stretching and general hamstring strengthening on pain, disability, and quality of life in patients with primary knee osteoarthritis and varus deformity.

METHODS

Forty patients with knee osteoarthritis were randomly assigned to two groups: a general hamstring strengthening group (14 women, 6 men) and a selective hamstring strengthening group (16 women, 4 men). In the general hamstring strengthening group, participants performed hamstring stretching and strengthening exercises broadly. In contrast, the selective hamstring strengthening group specifically targeted lateral hamstring strengthening and medial hamstring stretching. The treatment program was conducted three times a week for 4 weeks. Pain and disability levels were evaluated before and after treatment using the Knee Injury and Osteoarthritis Outcome Score (KOOS), quality of life was assessed using the Osteoarthritis Knee and Hip Quality of Life (OAKHQOL) questionnaire, and physical activity levels were determined using the Tegner activity scale.

RESULTS

Both groups demonstrated significant improvement in all outcomes except for the quality of life subscale of the KOOS questionnaire (p = .98) in the general hamstring strengthening group. However, the selective hamstring strengthening group exhibited greater improvements in symptoms (p = .02, effect size (d) = 0.92) and pain subscales (p = .01, d = 0.80) according to the KOOS questionnaire. Additionally, the pain subscale (p = .02, d = 0.79) of the OAKHQOL questionnaire exhibited greater improvements in the selective hamstring strengthening group. Tegner activity scale scores significantly improved in both groups.

CONCLUSION

Strengthening the lateral hamstring and stretching the medial hamstring muscles seem to be beneficial for reducing pain in patients with primary knee osteoarthritis and varus deformity. Attention to stabilization in frontal and horizontal planes in the knee joint might be better than simply evaluating the joint in the sagittal plane.

How effective are allied health group interventions for the management of adults with long-term conditions? An umbrella review of systematic reviews and its applicability to the Australian primary health system

BACKGROUND

Group allied health interventions for people with chronic conditions may be a solution to increasing access to allied health in primary care. This umbrella review aimed to determine the effectiveness of allied health group interventions to improve health-related outcomes for adults with chronic conditions and the applicability of the findings to the Australian primary health care context.

METHODS

An umbrella review of systematic reviews conducted April-July 2022, searching eight databases. Systematic reviews were eligible if they included randomised controlled trials (RCT) or quasi-RCTs, community dwelling adults aged ≥ 18, at least one chronic condition, group intervention in scope for allied health professionals, and published in English after 2000. Studies were excluded if interventions were conducted in hospital or aged care facilities, out of scope for allied health, or unsupervised.

RESULTS

Two thousand three hundred eighty-five systematic reviews were identified: after screening and full text review 154 were included and data extracted from 90. The chronic conditions included: cancer (n = 15), cardiovascular disease (n = 6), mixed chronic conditions (n = 3), kidney disease (n = 1), low back pain (n = 12), respiratory disease (n = 8), diabetes (n = 14), heart failure (n = 9), risk of falls (n = 5), hypertension (n = 4, osteoarthritis (n = 6) and stroke (n = 8). Most group interventions included prescribed exercise and were in scope for physiotherapists and exercise physiologists. Overall, allied health group exercise programs for community dwelling adults improved health outcomes for most chronic conditions. Aggregated data from the systematic reviews suggests programs of 45-60 min per session, 2-3 times per week for 12 weeks. Lifestyle education and support for people with type-2 diabetes improved glycaemic control.

CONCLUSIONS

Prescribed group exercise delivered by allied health professionals, predominantly by exercise physiologists and physiotherapists, significantly improved health outcomes for community dwelling adults with a broad range of chronic conditions.

Effectiveness of exercise on pain intensity and physical function in patients with knee and hip osteoarthritis: an umbrella and mapping review with meta-meta-analysis

PURPOSE

The aim of this review was to provide a qualitative and quantitative overview of the effects of exercise on pain, physical function, and quality of life for patients with knee and hip osteoarthritis.

MATERIALS AND METHODS

This study was an umbrella and mapping review with meta-meta-analysis. Meta-analyses of randomized controlled trials were included. The methodological quality and risk of bias were evaluated using the Modified Quality Assessment Scale for Systematic Reviews and the Risk of Bias in Systematic Reviews tool. The quality of evidence was evaluated using the Physical Activity Guidelines Advisory Committee Grading Criteria.

RESULTS

41 meta-analyses were included, 43.9% of the studies had adequate methodological quality, and 56.1% of the studies had a low risk of bias. Moderate evidence was found that exercise decreases pain intensity (33 meta-analyses; SMD = -0.49; 95% CI -0.56 to -0.42), improves function (19 meta-analyses; SMD = -0.50; 95% CI -0.58 to -0.41), strength (6 meta-analyses; SMD = -0.57; 95% CI -0.70 to -0.44) and quality of life (SMD = -0.36; 95% CI -0.46 to -0.27) for patients with hip and knee osteoarthritis.

CONCLUSION

Exercise is an effective intervention to decrease pain intensity and improve function in patients with hip and knee osteoarthritis.(PROSPERO, CRD42020221987).

Mind-body exercises for osteoarthritis: an overview of systematic reviews including 32 meta-analyses

PURPOSE

To develop an overview of systematic reviews (SRs) to summarize the current evidence on the effectiveness of mind-body exercises, specifically qigong, tai chi, and yoga, on osteoarthritis-related symptoms.

METHODS

CINAHL, Embase, PsycINFO, PubMed, SPORTDiscus, and the Cochrane Library were searched from inception up to 20 June 2022. Pain, physical function, psychological symptoms, and quality of life were analyzed. AMSTAR 2 was used to assess the methodological quality of SRs. The primary study overlap among SRs was calculated.

RESULTS

A total of 13 SRs were selected, including 32 meta-analyses of interest that comprised 33 distinct primary studies. Overall, qigong, tai chi, and yoga-based interventions may improve osteoarthritis-related symptoms, mainly physical function. However, no SRs were judged to have high methodological quality. Only three SRs judged certainty of evidence using a gold standard for it. The primary study overlap was very high for SRs covering tai chi or yoga trials.

CONCLUSIONS

There was a positive tendency in favor of these mind-body exercises for improving pain, arthritis self-efficacy, and mainly, physical function. Unfortunately, no clinical recommendations can be made due to the high number of methodological concerns that were described above. New high-quality SRs covering this topic are needed.

Development of the intelligent knee osteoarthritis lifestyle app: a person-based approach

BACKGROUND

Knee osteoarthritis is one of the most prevalent long term health conditions globally. Exercise and physical activity are now widely recognised to significantly reduce joint pain, improve physical function and quality of life in patients with knee osteoarthritis. However, prescribed exercise without regular contact with a healthcare professional often results in lower adherence and poorer health outcomes. Digital mobile health (mHealth) technologies offer great potential to support people with long-term conditions such as knee osteoarthritis more efficiently and effectively and with relatively lower cost than existing interventions. However, there are currently very few mHealth interventions for the self-management of knee osteoarthritis. The aim of the present study was to describe the development process of a mHealth app to extend the support for physical activity and musculoskeletal health beyond short-term, structured rehabilitation through self-management, personalised physical activity, education, and social support.

METHODS

The development of the intelligent knee osteoarthritis lifestyle application intervention involved an iterative and interconnected process comprising intervention 'planning' and 'optimisation' informed by the person-based approach framework for the development of digital health interventions. The planning phase involved a literature review and collection of qualitative data obtained from focus groups with individuals with knee osteoarthritis (n = 26) and interviews with relevant physiotherapists (n = 5) to generate 'guiding principles' for the intervention. The optimisation phase involved usability testing (n = 7) and qualitative 'think aloud' sessions (n = 6) with potential beneficiaries to refine the development of the intervention.

RESULTS

Key themes that emerged from the qualitative data included the need for educational material, modifying activities to suit individual abilities and preferences as well as the inclusion of key features such as rehabilitation exercises. Following a user-trial further changes were made to improve the usability of the application.

CONCLUSIONS

Using a systematic person-based, development approach, we have developed the intelligent knee osteoarthritis lifestyle application to help people maintain physical activity behaviour. The app extends the support for physical activity and musculoskeletal health beyond short-term, structured rehabilitation through personalised physical activity guidance, education, and social support.

Effects of physical exercise and body weight on disease-specific outcomes of people with rheumatic and musculoskeletal diseases (RMDs): systematic reviews and meta-analyses informing the 2021 EULAR recommendations for lifestyle improvements in people with RMDs

BACKGROUND

A European League Against Rheumatism (EULAR) taskforce was convened to develop recommendations for lifestyle behaviours in rheumatic and musculoskeletal diseases (RMDs). This paper reviews the literature on the effects of physical exercise and body weight on disease-specific outcomes of people with RMDs.

METHODS

Three systematic reviews were conducted to summarise evidence related to exercise and weight in seven RMDs: osteoarthritis, rheumatoid arthritis, systemic lupus erythematosus, axial spondyloarthritis (axSpA), psoriatic arthritis, systemic sclerosis and gout. Systematic reviews and original studies were included if they assessed exercise or weight in one of the above RMDs, and reported results regarding disease-specific outcomes (eg, pain, function, joint damage). Systematic reviews were only included if published between 2013-2018. Search strategies were implemented in the Medline, Embase, Cochrane Library of systematic reviews and CENTRAL databases.

RESULTS

236 articles on exercise and 181 articles on weight were included. Exercise interventions resulted in improvements in outcomes such as pain and function across all the RMDs, although the size of the effect varied by RMD and intervention. Disease activity was not influenced by exercise, other than in axSpA. Increased body weight was associated with worse outcomes for the majority of RMDs and outcomes assessed. In general, study quality was moderate for the literature on exercise and body weight in RMDs, although there was large heterogeneity between studies.

CONCLUSION

The current literature supports recommending exercise and the maintenance of a healthy body weight for people with RMDs.

Efficacy of Exercise-Based Rehabilitation Programs for Improving Muscle Function and Size in People with Hip Osteoarthritis: A Systematic Review with Meta-Analysis

Objective: To determine the effect of exercise-based rehabilitation programs on hip and knee muscle function and size in people with hip osteoarthritis. Methods: Seven databases were systematically searched in order to identify studies that assessed muscle function (strength or power) and size in people with hip osteoarthritis after exercise-based rehabilitation programs. Studies were screened for eligibility and assessed for quality of evidence using the GRADE approach. Data were pooled, and meta-analyses was completed on 7 of the 11 included studies. Results: Six studies reported hip and/or knee function outcomes, and two reported muscle volumes that could be included in meta-analyses. Meta-analyses were conducted for four strength measures (hip abduction, hip extension, hip flexion, and knee extension) and muscle size (quadriceps femoris volume). For hip abduction, there was a low certainty of evidence with a small important effect (effect size = 0.28, 95% CI = 0.01, 0.54) favouring high-intensity resistance interventions compared to control. There were no other comparisons or overall meta-analyses that identified benefits for hip or knee muscle function or size. Conclusion: High-intensity resistance programs may increase hip abduction strength slightly when compared with a control group. No differences were identified in muscle function or size when comparing a high versus a low intensity group. It is unclear whether strength improvements identified in this review are associated with hypertrophy or other neuromuscular factors.

Betaine Attenuates Osteoarthritis by Inhibiting Osteoclastogenesis and Angiogenesis in Subchondral Bone

Osteoarthritis (OA) is the most common type of arthritis with no effective therapy. Subchondral bone and overlying articular cartilage are closely associated and function as “osteo-chondral unit” in the joint. Abnormal mechanical load leads to activated osteoclast activity and increased bone resorption in the subchondral bone, which is implicated in the onset of OA pathogenesis. Thus, inhibiting subchondral bone osteoclast activation could prevent OA onset. Betaine, isolated from the Lycii Radicis Cortex (LRC), has been demonstrated to exert anti-inflammatory, antifibrotic and antiangiogenic properties. Here, we evaluated the effects of betaine on anterior cruciate ligament transection (ACLT)-induced OA mice. We observed that betaine decreased the number of matrix metalloproteinase 13 (MMP-13)-positive and collagen X (Col X)-positive cells, prevented articular cartilage proteoglycan loss and lowered the OARSI score. Betaine decreased the thickness of calcified cartilage and increased the expression level of lubricin. Moreover, betaine normalized uncoupled subchondral bone remodeling as defined by lowered trabecular pattern factor (Tb.pf) and increased subchondral bone plate thickness (SBP). Additionally, aberrant angiogenesis in subchondral bone was blunted by betaine treatment. Mechanistically, we demonstrated that betaine suppressed osteoclastogenesis in vitro by inhibiting reactive oxygen species (ROS) production and subsequent mitogen-activated protein kinase (MAPK) signaling. These data demonstrated that betaine attenuated OA progression by inhibiting hyperactivated osteoclastogenesis and maintaining microarchitecture in subchondral bone.

I exercise to postpone death - Interviews with persons with hip and/or knee osteoarthritis who are attending an osteoarthritis school

Background: Physical activity (PA) and exercise constitute the first line of treatment for osteoarthritis (OA) of the hip and/or knee. Even though the symptoms may vary, OA should be considered a chronic disease and therefore PA and exercise should be performed lifelong. That needs knowledge and motivation.Purpose: The purpose of this study was to explore and create a deeper understanding of the motivational processes for PA and exercise for persons with hip and/or knee OA who have participated in a self-management program OA school that included long-term exercise supervised by physical therapists.Methods: Twenty-two in-depth interviews were conducted with 18 participants recruited from the OA school at a Physical Therapy Rehabilitation Clinic in Sweden. The interviews were analyzed with qualitative content analysis.Results: The analysis resulted in one main theme, Developing health literacy to encourage motivational processes for PA and exercise in OA and four themes: 1) meeting an established self-management program; 2) carrying my life history; 3) understanding the intelligence of the body; and 4) growing in existential motivationConclusion: Motivation for being physically active and to exercise, the life history in relation to PA and what creates existential motivation are important areas to ask questions about when people come to OA schools. Knowledge about the signals of the body connected to OA should be implemented in OA schools in order to motivate people to live an active life despite OA. Health literacy and the awareness of how PA can postpone death are likely to be important for existential motivation.

Clinical outcome before and after COVID-19 quarantine in patients affect of knee and hip osteoarthritis

BACKGROUND

The emergency caused by COVID-19 Pandemia has resulted in a complete suspension and consequent delay of common planned surgery such total hip replacement in patients affect by osteoarthritis. At the same time, the issue of the quarantine imposed changes to the normal lifestyle of these patients. The purpose of our study is to evaluate how the presence of these two factors affect the quality of live of patients living in the Italian red zone.

METHODS

From outpatient pre-operative assessment we collect data about: demographic data, WOMAC score, NRS (Numeric rating scale 0-10), PCS SF12 and MCS SF12 score. Selected patients were therefore contacted by telephone call and re-assess using the same score. In addition, patients were asked if they intended to undergo the planned surgery again despite the current emergency Results:  14 patient have been recruited for the study. Male/female ration was 10/4, mean age was 70 years. Pre operative outpatient assessment mean WOMAC score was 44,86 (SD ± 8,52) , mean NRS was 8,07 (SD ± 1,33), PCS SF12 was  30,33 (SD ± 5,0) and MCS SF12 was 40,95 (SD ± 3,51).  At re-evalutation the mean WOMAC score was 32,86 (SD ± 17,88) , mean NRS was 5,79 (SD ± 3,66), PCS SF12 was  39,9 (SD ± 3,70) and MCS SF12 was 50,14 (SD ± 6,86) Conclusion:  The exceptionale pandemic from Covid-19 has profoundly changed our lifestyle, impacting normal daily activities but also on regular surgical activity in patients affected by osteoarthritis. Our study suggested that the lifestyle changes imposed by the situation led to an improvement of clinical score. This shows how an exceptional event can affect many aspects of daily life.

Movement behaviour patterns in patients with hip and/or knee osteoarthritis in the physical therapy setting: a cross-sectional study

Background

Osteoarthritis is one of the most common chronic joint diseases, mostly affecting the knee or hip through pain, joint stiffness and decreased physical functioning in daily life. Regular physical activity (PA) can help preserve and improve physical functioning and reduce pain in patients with osteoarthritis. Interventions aiming to improve movement behaviour can be optimized by tailoring them to a patients’ starting point; their current movement behaviour. Movement behaviour needs to be assessed in its full complexity, and therefore a multidimensional description is needed.

Objectives

The aim of this study was to identify subgroups based on movement behaviour patterns in patients with hip and/or knee osteoarthritis who are eligible for a PA intervention. Second, differences between subgroups regarding Body Mass Index, sex, age, physical functioning, comorbidities, fatigue and pain were determined between subgroups.

Methods

Baseline data of the clinical trial ‘e-Exercise Osteoarthritis’, collected in Dutch primary care physical therapy practices were analysed. Movement behaviour was assessed with ActiGraph GT3X and GT3X+ accelerometers. Groups with similar patterns were identified using a hierarchical cluster analysis, including six clustering variables indicating total time in and distribution of PA and sedentary behaviours. Differences in clinical characteristics between groups were assessed via Kruskall Wallis and Chi² tests.

Results

Accelerometer data, including all daily activities during 3 to 5 subsequent days, of 182 patients (average age 63 years) with hip and/or knee osteoarthritis were analysed. Four patterns were identified: inactive & sedentary, prolonged sedentary, light active and active. Physical functioning was less impaired in the group with the active pattern compared to the inactive & sedentary pattern. The group with the prolonged sedentary pattern experienced lower levels of pain and fatigue and higher levels of physical functioning compared to the light active and compared to the inactive & sedentary.

Conclusions

Four subgroups with substantially different movement behaviour patterns and clinical characteristics can be identified in patients with osteoarthritis of the hip and/or knee. Knowledge about these subgroups can be used to personalize future movement behaviour interventions for this population.

Trial registration

Dutch clinical trial registration number of e-Exercise Osteoarthritis: NTR4224.

Long-term clinical and economic outcomes of a short-term physical activity program in knee osteoarthritis patients

OBJECTIVE

Physical activity (PA) in the US knee osteoarthritis (OA) population is low, despite well-established health benefits. PA program implementation is often stymied by sustainability concerns. We sought to establish parameters that would make a short-term (3-year efficacy) PA program a cost-effective component of long-term OA care.

METHOD

Using a validated computer microsimulation (Osteoarthritis Policy Model), we examined the long-term clinical (e.g., comorbidities averted), quality of life (QoL), and economic impacts of a 3-year PA program, based upon the SPARKS (Studying Physical Activity Rewards after Knee Surgery) Trial, for inactive knee OA patients. We determined the cost, efficacy, and impact of PA on QoL and medical costs that would make a PA program a cost-effective addition to OA care.

RESULTS

Among the 14 million with knee OA in the US, >4 million are inactive. Participation of 10% in the modeled PA program could save 200 cases of cardiovascular disease, 400 cases of diabetes, and 6,800 quality-adjusted life-years (QALYs). The program had an incremental cost-effectiveness ratio (ICER) of $16,100/QALY. Tripling PA program cost ($860/year) raised the ICER to $108,300/QALY; varying QoL benefits from PA yielded ICERs of $8,800/QALY-$99,900/QALY; varying background cost savings from PA did not qualitatively impact ICERs. Offering the PA program to any adults with knee OA (not only inactive) yielded $31,000/QALY.

CONCLUSION

A PA program with 3-year efficacy in the knee OA population carried favorable long-term clinical and economic benefits. These results offer justification for policymakers and payers considering a PA intervention incorporated into knee OA care.

The Effect of Neuromuscular Electrical Stimulation During Walking on Muscle Strength and Knee Pain in Obese Women With Knee Pain: A Randomized Controlled Trial

OBJECTIVE

The aim of the study was to assess the effectiveness of a hybrid training system with walking that simultaneously applies electrical stimulation to the knee extensors/flexors during walking in obese women with knee pain.

DESIGN

This is a randomized, single-blind (assessor), controlled trial. Twenty-eight obese women with knee pain were randomized to 12 weeks of biweekly walking with either hybrid training system with walking or with transcutaneous electrical nerve stimulation (control). Primary outcomes (maximum isokinetic knee extensor torque and maximum isokinetic knee flexor torque) and secondary outcomes (20-m walk time, chair-stand time, stair-climb time, knee pain, and knee-related quality life) were evaluated. Change-point regression analyses were used to model the interaction for the primary outcomes. Two-sample t tests were used on pre-post change scores in secondary outcomes.

RESULTS

Knee extensor torque increased significantly more in the hybrid training system with walking group than the control group when baseline knee extensor torque was greater than 57.2 Nm (P = 0.0033). When baseline knee flexor torque was at 30 or 50 Nm, there was a trend toward greater increase in the hybrid training system with walking group than the control group (P = 0.0566, P = 0.0737, respectively). There were no significant differences between groups in secondary outcomes.

CONCLUSIONS

These results suggest that hybrid training system with walking is effective for improving knee extensor torque in obese women with knee pain. However, the superiority of hybrid training system with walking may vary depending on baseline knee muscle strength.

The Role of Physical Activity as Conservative Treatment for Hip and Knee Osteoarthritis in Older People: A Systematic Review and Meta-Analysis

: The aim of this systematic review and meta-analysis is to determine the role of physical activity as a conservative treatment for older people with knee or hip osteoarthritis. The effect on pain, physical function, stiffness, quality of life, and dynamic balance of Aquatic Exercise, Land-based Exercise, and Sports were compared in a specific population composed of osteoarthritic patients aged 65 or over. A systematic search using Pubmed-Medline, Google Scholar, and the Cochrane Library was carried out to select randomized clinical trials, observational studies, or case series that evaluated outcome measures after physical activity. Twenty randomized controlled trials (RCTs) and two case series were included in this review. Four trials were at low risk of bias (A), 12 at unclear risk of bias (B), and four at high risk of bias (C). Compared to controls, Aquatic Exercise, Land-based Exercise, Tai Chi, and Yoga showed a small to high effect for improving pain, physical function, quality of life, and stiffness. Active exercise and sport are effective to improve pain and physical function in elderly people with osteoarthritis. Nevertheless, further studies are required to validate the use of land-based exercise, aquatic exercise, or sport to treat the symptoms of older adults that suffer from knee and hip osteoarthritis.

Health-related quality of life and flourishing in current and former recreational and elite cricketers

BACKGROUND

Health related quality of life (HRQoL) and flourishing are constructs that encompasses a holistic representation of physical, psychological, and social health. The underlying psychological factors that can affect HRQoL and flourishing in sports participants is poorly understood. The purpose of this study was to i) evaluate HRQoL (physical and mental-components) and flourishing in recreational and elite and current and former cricketers; ii) determine the effect of resilience, playing-standard, and playing status on HRQoL and flourishing in cricketers.

METHODS

The Cricket Health and Wellbeing Study (n = 2598 current and former cricketers, aged ≥18 years) collected cross-sectional questionnaire data including the Flourishing Scale, Short Form-8 (physical (PCS) and mental (MCS) component scores), resilience (European Social Survey), highest standard-of-play, and playing status. Multivariable linear regressions with fractional polynomials were utilised, adjusted for age, gender, total cricket-seasons, comorbidity, ≥ 4-week time-loss injury, and orthopaedic surgery.

RESULTS

Two thousand two hundred eighty individuals (aged (mean (SD)) 51.7(14.7) years, 61% played recreationally, 37% former cricketers) were included in analyses. The median (IQR) PCS was 51.4(46.9-55.9), MCS was 54.3(50.0-58.6), and Flourishing Scale score was 48 [ (1-7)] .Greater resilience was associated with better PCS (effect (95% CI) 1.41(0.70-2.11)), MCS (4.78(4.09-5.48)), and flourishing (2.07(2.55-3.59)) compared to less resilience. Playing standard was not associated with HRQoL. Playing at an elite standard was associated with greater flourishing (1.21(0.68, 1.73)), compared with playing recreationally. Current cricket participation was associated with better PCS (3.61(2.92-4.30)) and flourishing scores (0.53(0.02-1.04)), compared to former cricket participation.

CONCLUSION

Cricketers reported high levels of mental-components of HRQoL and flourishing, and this was similar in recreational, elite, current and former cricketers. Current cricket participation and a higher standard-of-play was associated with greater flourishing. Current cricket participation was also associated with better PCS, however playing-status was not related to MCS. Further research is needed to understand if cricket participation may have psychological benefits that persist beyond cricket retirement.

Effects of Physical Activity in Knee and Hip Osteoarthritis: A Systematic Umbrella Review

INTRODUCTION

We conducted a systematic umbrella review to evaluate the literature relating to effects of physical activity on pain, physical function, health-related quality of life, comorbid conditions and osteoarthritis (OA) structural disease progression in individuals with lower-extremity OA.

METHODS

Our primary search encompassed 2011 to February 2018 for existing systematic reviews (SR), meta-analyses (MA) and pooled analyses dealing with physical activity including exercise (not mixed with any other intervention and compared to a no-activity control group). A supplementary search encompassed 2006 to February 2018 for original research related to physical activity (including exercise) and lower limb OA progression. Study characteristics were abstracted, and risk of bias was assessed.

RESULTS

Physical activity decreased pain and improved physical function (strong evidence) and improved health-related quality of life (moderate evidence) among people with hip or knee OA relative to less active adults with OA. There was no evidence to suggest accelerated OA progression for physical activity below 10,000 steps per day. Both physical activity equivalent to the 2008 Physical Activity Guidelines for Americans (150 min·wk of moderate-intensity exercise in bouts ≥10 min) and lower levels of physical activity (at least 45 total minutes per week of moderate-intensity) were associated with improved or sustained high function. No SR/MA addressing comorbid conditions in OA were found. Measurable benefits of physical activity appeared to persist for periods of up to 6 months following cessation of a defined program.

CONCLUSIONS

People with lower-extremity OA should be encouraged to engage in achievable amounts of physical activity, of even modest intensities. They can choose to accrue minutes of physical activity throughout the entire day, irrespective of bout duration, and be confident in gaining some health and arthritis-related benefits.

Relative difference among 27 functional measures in patients with knee osteoarthritis: an exploratory cross-sectional case-control study

Background

To raise the effectiveness of interventions, clinicians should evaluate important biopsychosocial aspects of the patient’s situation. There is limited knowledge of which factors according to the International Classification of Function, Disability, and Health (ICF) are most deviant between patients with knee osteoarthritis (KOA) and healthy individuals. To assist in measures’ selection, we aimed to quantify the differences between patients with KOA and healthy controls on various measures across the ICF dimensions of body function, activity, and participation.

Methods

We performed an exploratory cross-sectional case-control study. In total, 28 patients with mild-to-moderate KOA (mean age 61 years, 64% women) referred by general physicians to a hospital’s osteoarthritis-school, and 31 healthy participants (mean age 55 years, 52% women), volunteered. We compared between-group differences on 27 physical and self-reported measures derived from treatment guidelines, trial recommendations, and trial/outcome reviews. Independent t-test, Chi-square, and Mann-Whitney U test evaluated the significance for continuous parametric, dichotomous, and ordinal data, respectively. For parametric data, effect sizes were calculated as Cohen’s d. For non-parametric data, ds were estimated by p-values and sample sizes according to statistical formulas. Finally, all ds were ranked and interpreted after Hopkins’ scale. An age-adjusted sensitivity-analysis on parametric data validated those conclusions.

Results

Very large differences between patients and controls were found on the Pain numeric rating scale¹, the Knee Injury and Osteoarthritis Scale (KOOS, all subscales)², as well as the Örebro Musculoskeletal psychosocial scale³ (P < 0.0001). Large differences were found on the Timed 10-steps-up-and-down stair climb test⁴ and Accelerometer registered vigorous-intensity physical activity in daily life⁵ (P < 0.001). Respectively, these measures clustered on ICF as follows: ¹body function, ²all three ICF-dimensions, ³body function and participation, ⁴activity, and ⁵participation.

Limitations

The limited sample excluded elderly patients with severe obesity.

Conclusions

Very large differences across all ICF dimensions were indicated for the KOOS and Örebro questionnaires together for patients aged 45–70 with KOA. Clinicians are suggested to use them as means of selecting supplementary measures with appropriate discriminative characteristics and clear links to effective therapy. Confirmative studies are needed to further validate these explorative and partly age-unadjusted conclusions.

Effects of Covertly Measured Home Exercise Adherence on Patient Outcomes Among Older Adults With Chronic Knee Pain

BACKGROUND

Assessment of home exercise adherence and the degree to which adherence influences changes in patient outcomes is limited by the use of self-reported measures.

OBJECTIVES

To determine the relationship between adherence to a home strengthening program, covertly measured by accelerometers in ankle cuff weights, and changes in self-reported pain, physical function, and knee extensor strength among people with chronic knee pain.

METHODS

This is a secondary analysis of data from a clinical measurement study in 54 adults, aged 45 years or older, with chronic knee pain who completed a 12-week, home-based quadriceps-strengthening program. A triaxial accelerometer was concealed in the ankle cuff weight used for exercises to assess exercise adherence. Associations between exercise adherence and changes in pain and function (measured using the Western Ontario and McMaster Universities Osteoarthritis Index) and peak isometric knee extensor strength were examined using mixed-effects and linear regression models and fractional polynomials.

RESULTS

Exercise adherence declined from a median of 90% (interquartile range, 70%-100%) in weeks 0 to 2 to 65% (interquartile range, 25%-90%) in weeks 10 to 12. Significant improvements were observed in knee pain (mean change, -3.2 units; 95% confidence interval [CI]: -2.4, -3.9 units), function (mean change, -10.1 units; 95% CI: -7.8, -12.4 units), and knee extensor strength (mean change, 0.34 Nm/kg; 95% CI: 0.26, 0.42 Nm/kg) across the group over the same period. Exercise adherence was not associated with changes in pain, function, and knee extensor strength over 2-week periods or over the entire 12 weeks.

CONCLUSION

Covertly measured adherence to a home strengthening program was not associated with changes in patient outcomes. These findings challenge the notion that greater exercise adherence leads to greater improvement in patient outcomes during a short-term intervention. J Orthop Sports Phys Ther 2019;49(7):548-556. doi:10.2519/jospt.2019.8843.

Artesunate, an Anti-Malaria Agent, Attenuates Experimental Osteoarthritis by Inhibiting Bone Resorption and CD31hiEmcnhi Vessel Formation in Subchondral Bone

Osteoarthritis (OA) is a common and debilitating joint disease worldwide without interventions available to reverse its progression. Artesunate (ART), an anti-malaria agent, possesses diverse biological activities, including the inhibition of osteoclastogenesis and angiogenesis in various cells, but its role in subchondral bone during OA progression is not known. Here, we explored the curative effects of ART on the pathogenesis of OA in anterior cruciate ligament transection (ACLT) mice models. We found that ART attenuated articular cartilage degeneration, defined by lowered histologic scoring of OA and retarded calcification of the cartilage zone. Moreover, ART improved the expression of lubricin and aggrecan and reduced the expression of collagen X (Col X) and matrix metalloproteinase-13 (MMP-13). In parallel, ART normalized abnormal subchondral bone remodeling by maintaining bone volume fraction (BV/TV) and subchondral bone plate thickness (SBP Th) and reducing trabecular pattern factor (Tb.pf) compared to the vehicle-treated mice. Our results indicated that ART suppressed osteoclastic bone resorption through regulating RANKL-OPG system, restored coupled bone remodeling by indirectly inhibiting TGF-β/Smad2/3 signaling. Additionally, ART abrogated CD31^hiEmcn^hi vessel formation via downregulating the expression of vascular endothelial growth factor (VEGF) and angiogenin-1 in subchondral bone. In conclusion, ART attenuates ACLT-induced OA by blocking bone resorption and CD31^hiEmcn^hi vessel formation in subchondral bone, indicating that this may be a new therapeutic alternative for OA.

Active Learning: Lessons From Women With Type 2 Diabetes in a Walking Program

PURPOSE

The purpose of this study was to explore the experiences and preferences of sedentary women with type 2 diabetes who had recently completed a pilot 12-week supervised treadmill walking study.

METHODS

A qualitative design was used. Content analysis was used to assess major themes and subthemes embedded within participants' responses to open-ended questions about their experiences of participating in a walking program. Women were recruited from a database of patients willing to be contacted for research studies.

RESULTS

Seven inner-city women with type 2 diabetes (71% African American, age 62 ± 4.2 years, A1C 6.8% ± 1.3, years since diagnosis 6.6 ± 3.4 years) completed the postprogram interview. Only 3 of the 7 women had ever received any diabetes education. Four major themes emerged: (1) supportive environment, (2) personal commitment: overcoming ambivalence, (3) learning, and (4) outcomes, and 8 subthemes emerged. A supportive environment (encouraging, person centered, social, and structured) in combination with actively learning about diabetes and self-monitoring the effects of exercise seemed to be associated with personal commitment and confidence in participating in a walking program.

CONCLUSIONS

Active/experiential learning in a supportive environment may enhance both personal diabetes knowledge and behaviors among women with little diabetes education and low activity levels.

Educational outreach visits to improve knee osteoarthritis management in primary care

BACKGROUND

Knee osteoarthritis is a common problem, but often underdiagnosed and undertreated in primary care as compared to evidence-based guidelines. Educational outreach visits are an effective strategy to improve guideline adherence, but its contribution to knee osteoarthritis management is largely unknown. The aim of this study was to evaluate the overall effectiveness of educational outreach visits on process quality indicators for knee osteoarthritis management, more specifically on the referral for physical therapy.

METHODS

An educational intervention study, non-randomized and controlled, was designed for general practitioners (GPs) in Belgium. During four months, 426 GPs were visited by academic detailers and allocated to the intervention group. The control group was selected from GPs not visited by academic detailers during the study period. Six months post-intervention, both groups received a questionnaire with two case-vignettes to measure the effectiveness of the educational outreach. Outcomes were assessed with a Belgian set of quality indicators for knee osteoarthritis management and focused on the number of prescriptions for appropriate physical therapy (i.e. muscle strengthening, aerobic, functional or range of motion exercises) and the adherence to eight additional quality indicators related to knee osteoarthritis management. For the analysis, multivariable logistic regression models were used and Generalized Estimating Equations to handle the correlation between the multiple results per GP.

RESULTS

The intervention group showed a tendency to prescribe more frequently at least one appropriate physical therapy for a case (43.8%), compared to the control group (31.3%, p = 0.057). Muscle strengthening exercises were the most frequently prescribed therapy with 37.0% in the intervention versus 26.9% in the control group. The adherence to the other quality indicators showed no significant difference between the intervention and control group and varied between 8.9 and 100% in the intervention group.

CONCLUSIONS

This intervention did not alter significantly the adherence to quality indicators and in particular the probability of prescribing physical therapy. To change general practitioners' prescription behavior, more extensive or combined interventional approaches seem warranted.

Level of participation in physical therapy or an internet-based exercise training program: associations with outcomes for patients with knee osteoarthritis

Background

To examine whether number of physical therapy (PT) visits or amount of use of an internet-based exercise training (IBET) program is associated with differential improvement in outcomes for participants with knee osteoarthritis (OA).

Methods

A secondary analysis was performed using data from participants in 2 arms of a randomized control trial for individuals with symptomatic knee OA: PT (N = 135) or IBET (N = 124). We examined associations of number of PT visits attended (up to 8) or number of days the IBET website was accessed during the initial 4-month study period with changes in Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) total, pain and function subscales, as well as a 2-min Step Test, at 4-month and 12-month follow-up.

Results

Participants with more PT visits experienced greater improvement in WOMAC total score (estimate per additional visit = − 1.18, CI 95% = − 1.91, 0.46, p <  0.001) and function subscore (estimate = − 0.80, CI 95% = − 1.33, − 0.28, p <  0.001) across follow-up periods. For WOMAC pain subscale, the association with number of PT visits varied significantly between 4- and 12-month follow-up, with a stronger relationship at 4-months. There was a non-significant trend for more PT visits to be associated with greater improvement in 2-min Step Test. More frequent use of the IBET website was not associated with greater improvement for any outcome, at either time point.

Conclusion

Increased number of PT visits was associated with improved outcomes, and some of this benefit persisted 8 months after PT ended. This provides guidance for PT clinical practice and policies.

Trial registration

NCT02312713, posted 9/25/2015.

Osteoarthritis year in review 2017: rehabilitation and outcomes

OBJECTIVE

The purpose of this systematic review was to describe studies examining rehabilitation for people with osteoarthritis (OA) and to summarize findings from selected key systematic reviews (SRs) and randomized controlled trials (RCTs).

DESIGN

A systematic search was performed using Pubmed, Embase and Cochrane databases from April 1^st 2016 to May 15^th 2017 using the terms 'osteoarthritis', 'randomized controlled trial', and 'systematic review'. Inclusion criteria were: clinically or radiologically diagnosed patients with OA, rehabilitation treatment, RCT or SRs. A selection of the included studies is discussed based on study quality and perceived importance to the field; including those that are innovative, inform the direction of the field or generate controversy. Methodological quality of the included studies was assessed using the PEDro-scale for RCTs and the Amstar guideline for SRs.

RESULTS

From 1211 articles, 80 articles met the eligibility criteria including 21 SRs and 61 RCTs. The median of the methodological quality of the SRs and RCTs was 7 (2-9) and 6 (3-10), respectively. The studies were grouped into several themes, covering the most important rehabilitation fields.

CONCLUSIONS

Striking is the small number of studies investigating another joint (18%) than the knee (82%). Exercise is the most common treatment evaluated and should be accompanied with education to effectuate a behavioural change in physical activity of people with OA. No new insights in the field of braces (or orthoses) and in the field of acupuncture were found.