SUNScholar - Browsing by Author "Louw, Quinette A."

Browsing by Author "Louw, Quinette A."

Now showing 1 - 14 of 14

An analysis of trunk kinematics and gait parameters in people with stroke
(AOSIS, 2018) Titus, Adnil W.; Hillier, Susan; Louw, Quinette A.; Inglis-Jassiem, Gakeemah
Background: Approximately two out of three people with stroke experience gait problems. Trunk movement control and symmetry is an important prerequisite for functional walking gait. Movement control, measured objectively as kinematics during walking gait, is rarely investigated. Objective: To describe the three-dimensional (3D) kinematics of the trunk during gait in people with stroke, including key spatiotemporal characteristics. Methodology: A total of 17 adults with stroke who met the inclusion criteria were selected to participate in this cross-sectional pilot study. An eight-camera T-10 Vicon system with Nexus 1.8 software (Vicon Motion System Limited, Oxford, UK) was used to analyse the 3D kinematics of the trunk during self-selected walking speed. Trunk kinematics throughout the gait cycle and spatiotemporal parameters were extracted using custom-built scripts in MATLAB used at the Stellenbosch University Movement Analysis Laboratory. Stata Version 12.1 software was used to assess differences in trunk kinematics between the affected and unaffected sides during gait using the Sign test (statistical significance level p < 0.05). Results: Participants achieved functional gait speeds although they presented with asymmetrical trunk kinematics. During the full gait cycle, there were statistically significant differences of trunk motion between the affected and unaffected sides in the coronal plane (p < 0.001). There were statistically significant differences in the trunk kinematics between the affected side and unaffected sides at initial contact (p < 0.001) and foot off (p < 0.049) in the coronal plane as well as at initial contact (p < 0.000) and foot off (p < 0.013) in the transverse plane. Conclusion: This pilot study found significant asymmetry in trunk motion between the affected and unaffected sides that varied across the gait cycle. This suggests the trunk may need to be targeted in clinical gait retraining post-stroke.
Biomechanical risk factors associated with iliotibial band syndrome in runners : a systematic review
(BioMed Central, 2015-11) Aderem, Jodi; Louw, Quinette A.
Background Iliotibial band syndrome is the second most common running injury. A gradual increase in its occurrence has been noted over the past decade. This may be related to the increasing number of runners worldwide. Since the last systematic review, six additional papers have been published, providing an opportunity for this review to explore the previously identified proximal risk factors in more detail. The aim of this systematic review is thus to provide an up to date quantitative synthesis of the trunk, pelvis and lower limb biomechanical risk factors associated with Iliotibial band syndrome in runners and to provide an algorithm for future research and clinical guidance. Methods An electronic search was conducted of literature published up until April 2015. The critical appraisal tool for quantitative studies was used to evaluate methodological quality of eligible studies. Forest plots displayed biomechanical findings, mean differences and confidence intervals. Level of evidence and clinical impact were evaluated for each risk factor. A meta-analysis was conducted where possible. Result Thirteen studies were included (prospective (n = 1), cross-sectional (n = 12)). Overall the methodological score of the studies was moderate. Female shod runners who went onto developing Iliotibial band syndrome presented with increased peak hip adduction and increased peak knee internal rotation during stance. Female shod runners with Iliotibial band syndrome presented with increased: peak knee internal rotation and peak trunk ipsilateral during stance. Conclusion Findings indicate new quantitative evidence about the biomechanical risk factors associated with Iliotibial band syndrome in runners. Despite these findings, there are a number of limitations to this review including: the limited number of studies, small effect sizes and methodological shortcomings. This review has considered these shortcomings and has summarised the best available evidence to guide clinical decisions and plan future research on Iliotibial band syndrome aetiology and risk.
Clinical practice guidelines for the management of chronic musculoskeletal pain in primary healthcare : a systematic review
(BioMed Central, 2017-01-05) Ernstzen, Dawn V.; Louw, Quinette A.; Hillier, Susan L.
ENGLISH SUMMARY : Background: Up-to-date, high quality, evidence-based clinical practice guidelines (CPGs) that are applicable for primary healthcare are vital to optimize services for the population with chronic musculoskeletal pain (CMSP). The study aimed to systematically identify and appraise the available evidence-based CPGs for the management of CMSP in adults presenting in primary healthcare settings. Methods: A systematic review was conducted. Twelve guideline clearinghouses and six electronic databases were searched for eligible CPGs published between the years 2000 and May 2015. CPGs meeting the inclusion criteria were appraised by three reviewers using the Appraisal of Guidelines Research and Evaluation (AGREE) II. Results: Of the 1082 records identified, 34 were eligible, and 12 CPGs were included based on the inclusion and exclusion criteria. The methodological rigor of CPG development was highly variable, and the median domain score was 66%. The median score for stakeholder involvement was 64%. The lowest median score was obtained for the domain applicability (48%). There was inconsistent use of frameworks to aggregate the level of evidence and the strength of the recommendation in the included CPGs. The scope and content of the included CPGs focussed on opioid prescription. Conclusion: Numerous CPGs that are applicable for the primary healthcare of CMSP exists, varying in their scope and methodological quality. This study highlights specific elements to enhance the development and reporting of CPGs, which may play a role in the uptake of guidelines into clinical practice. These elements include enhanced reporting of methodological aspects, the use of frameworks to enhance decision making processes, the inclusion of patient preferences and values, and the consideration of factors influencing applicability of recommendations.
Cross-cultural adaptation and validation of the South African Pain Catastrophizing Scale (SA-PCS) among patients with fibromyalgia
(BioMed Central, 2012-11) Morris, Linzette D.; Grimmer-Somers, Karen A.; Louw, Quinette A.; Sullivan, Michael J.
Background: Pain catastrophization has recently been recognized as a barrier to the healthy development of physical functioning among chronic pain patients. Levels of pain catastrophization in chronic pain patients are commonly measured using the Pain Catastrophizing Scale (PCS). Objective: To cross-culturally adapt and validate the South African PCS (SA-PCS) among English-, Afrikaans- and Xhosa-speaking patients with fibromyalgia living in the Cape Metropole area, Western Cape, South Africa. Methods: The original PCS was cross-culturally adapted in accordance with international standards to develop an English, Afrikaans and Xhosa version of the SA-PCS using a repeated measures study design. Psychometric testing included face/content validity, internal consistency (Cronbach’s alpha-α), test-retest reliability (intraclass coefficient correlations-ICC), sensitivity-to-change and cross-sectional convergent validity (by comparing the adapted SA-PCS to related constructs). Results: The cross-culturally adapted English, Afrikaans and Xhosa SA-PCS showed good face and content validity, excellent internal consistency (with Chronbach’s α = 0.98, 0.98 and 0.97 for the English, Afrikaans and Xhosa SA-PCS, as a whole, respectively), excellent test-retest reliability (with ICC’s of 0.90, 0.91 and 0.89 for the English, Afrikaans and Xhosa SA-PCS, respectively); as well as satisfactory sensitivity-to-change (with a minimum detectable change of 8.8, 9.0 and 9.3 for the English, Afrikaans and Xhosa SA-PCS, respectively) and cross-sectional convergent validity (when compared to pain severity as well as South African versions of the Tampa scale for Kinesiophobia and the revised Fibromyalgia Impact Questionnaire). Conclusion: The SA-PCS can therefore be recommended as simple, efficient, valid and reliable tool which shows satisfactory sensitivity-to-change and cross-sectional convergent validity, for use among English, Afrikaans and Xhosa-speaking patients with fibromyalgia attending the public health sector in the Western Cape area of South Africa.
Cross-cultural adaptation, content validation, and reliability of the Nigerian Composite Lifestyle CVD Risk Factors Questionnaire for adolescents among Yoruba rural adolescents in Nigeria
(Medical Association of Malawi, 2017) Odunaiya, Nse A.; Louw, Quinette A.; Grimmer, Karen
Background: Assessment of lifestyle risk factors must be culturally and contextually relevant and available in local languages. This paper reports on a study which aimed to cross-culturally adapt a composite lifestyle cardiovascular disease (CVD) risk factors questionnaire into an African language (Yoruba) and test some of its psychometric properties, such as content validity and test–retest reliability in comparison to the original English version. Methods: This study utilised a cross-sectional design. Translation of the English version of the questionnaire into Yoruba was undertaken using the guideline by Beaton et al. The translated instrument was presented to 21 rural adolescents to assess comprehensibility and clarity, using a sample of convenience. A test–retest reliability exercise was conducted among 150 rural adolescents, using purposive sampling. Data were analysed using an intraclass correlation (ICC ) model 3, Cohen kappa statistics and prevalence rates. Results: ICC ranged between 0.4 and 0.8. The Yoruba version was completed in 15 to 20 minutes, and it was reported to be culturally appropriate and acceptable for rural Nigerian adolescents. Conclusions: The Yoruba translation of the Nigerian composite lifestyle risk factors questionnaire performs at least as well as the original English version in terms of content validity and reliability. It took a shorter time to complete and thus may be more acceptable to rural adolescents.
Intrinsic factors associated with return to sport after anterior cruciate ligament reconstruction: a systematic review
(AOSIS Publishing, 2015-06) Ross, Cheryl A.; Clifford, Amanda; Louw, Quinette A.
Objectives: The anterior cruciate ligament is the most commonly injured ligament in the knee, with an average of only 64% of affected athletes returning to their pre-injury level of sport. Intrinsic factors associated with an increased likelihood of return to sport may be addressed during rehabilitation to improve the outcome of the reconstruction. The objectives of this review were to systematically appraise publications from six electronic databases describing intrinsic factors that may be associated with return to sport after anterior cruciate ligament reconstruction. Methods: The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed. Methodological quality appraisal was performed according to the Critical Appraisal Skills Programme for cohort studies. We performed a descriptive synthesis of the findings that associated intrinsic factors with return to sport. Results: Ten studies were included in the review. The findings show that fear of re-injury is a common reason for not returning to participation in sport. Younger patients may be more likely to return to sport, but findings regarding gender were equivocal, with male competitive athletes appearing to be more likely to return to sport than their female counterparts. Good knee function is not always associated with a higher likelihood to return to sport. Conclusion: Fear of re-injury and age should be considered in the management of sports participants after anterior cruciate ligament reconstruction.
Patients’ perceptions of recovery following a 6-week exercise intervention for the treatment of patellofemoral pain : a mixed methods study
(AOSIS, 2019) Leibbrandt, Dominique C.; Louw, Quinette A.
Background: Patellofemoral pain (PFP) is a common and complex condition. The diagnosis and causal mechanisms are not well understood and therefore the long-term prognosis tends to be poor. Exercise is currently the only evidence-based treatment strategy suggested to improve pain and function in the long term. However, no qualitative studies have been conducted to establish patients’ perceptions of recovery in the long term following an exercise intervention. Objectives: To measure self-reported recovery on a 7-point Likert scale in 31 participants with PFP 6 months after a 6-week physiotherapy intervention. To explore the subjective accounts of patients who received a physiotherapy intervention for PFP, regarding their expectations and perceptions of recovery. Method: Semi-structured exit interviews were conducted electronically 6 months after intervention to ascertain the patients’ perspectives on whether expectations of treatment were met, and factors that influenced their recovery experience. Results: Quantitative analysis of self-reported recovery on a 7-point Likert scale showed that 48.4% of participants felt that they were ‘recovered’. Qualitative analysis showed three main categories: expectations of treatment, perceptions of recovery and changes in functional abilities. Conclusion: Clinicians should address patients’ expectations of treatment and include the patients in decision-making regarding their treatment. Long-term follow-up is essential to ensure that treatment effects have been maintained, and this should include information about patients’ self-reported recovery. Clinical implications: This study suggests that patients’ expectations of treatment and perceptions of recovery from PFP may influence prognosis. Clinicians need to collaborate with patients and involve them in decision-making to achieve their goals. An individualised treatment approach is essential to adequately address patients’ experiences, priorities and beliefs.
The prevalence of low back pain in Africa : a systematic review
(BioMed Central, 2007-11) Louw, Quinette A.; Morris, Linzette D.; Grimmer-Somers, Karen
Background: Low back pain (LBP) is the most prevalent musculoskeletal condition and one of the most common causes of disability in the developed nations. Anecdotally, there is a general assumption that LBP prevalence in Africa is comparatively lower than in developed countries. The aim of this review was to systematically appraise the published prevalence studies conducted on the African continent to establish the prevalence of LBP in Africa. Methods: A comprehensive search was conducted in April 2006. The following databases PEDro, Psychinfo, Science Direct, SportsDiscus, PubMed, CINAHL, Biblioline Pro-African Wide NiPAD and SA ePublications were individually searched using specifically developed search strategies for epidemiological research conducted on LBP amongst the African population. Two reviewers independently evaluated the methodological quality of the studies reviewed. Results: A total of 27 eligible epidemiological studies were included in this review. The majority of the studies (63%) were conducted in South Africa (37%) and Nigeria (26%). The most common population group involved workers (48%), while scholars comprised 15% of the population. 67% of the studies were found to be methodologically sound, and the LBP prevalence of these were analyzed. The mean LBP point prevalence among the adolescents was 12% and among adults was 32%. The average one year prevalence of LBP among adolescents was 33% and among adults was 50%. The average lifetime prevalence of LBP among the adolescents was 36% and among adults was 62%. Conclusion: The findings support the global burden of disease of LBP, in addition to suggesting that LBP prevalence among Africans is rising and is of concern. Further research into the most effective strategies to prevent and manage LBP in Africa is warranted.
A profile of hospital-admitted paediatric burns patients in South Africa
(BMC Research Notes, 2010-06) Parbhoo, Asha; Louw, Quinette A.; Grimmer-Somers, Karen
Background: Injuries and deaths from burns are a serious, yet preventable health problem globally. This paper describes burns in a cohort of children admitted to the Red Cross Children's Hospital, in Cape Town, South Africa. This six month retrospective case note review looked at a sample of consecutively admitted patients from the 1 st April 2007 to the 30 th September 2007. Information was collected using a project-specific data capture sheet. Descriptive statistics (percentages, medians, means and standard deviations) were calculated, and data was compared between age groups. Spearman's correlation co-efficient was employed to look at the association between the total body surface area and the length of stay in hospital. Findings: During the study period, 294 children were admitted (f= 115 (39.1%), m= 179 (60.9%)). Hot liquids caused 83.0% of the burns and 36.0% of these occurred in children aged two years or younger. Children over the age of five were equally susceptible to hot liquid burns, but the mechanism differed from that which caused burns in the younger child. Conclusion: In South Africa, most hospitalised burnt children came from informal settlements where home safety is a low priority. Black babies and toddlers are most at risk for sustaining severe burns when their environment is disorganized with respect to safety. Burns injuries can be prevented by improving the home environment and socioeconomic living conditions through the health, social welfare, education and housing departments.
Quality of life and physical activity among older adults living in institutions compared to the community
(AOSIS Publishing, 2017) Ramocha, Lesego M.; Louw, Quinette A.; Tshabalala, Muziwakhe D.
Background: The environment of older adults plays an important role in their well-being. It influences their quality of life and physical activity level. In South Africa, there is a dearth of literature concerning this issue. Methods: An analytic cross-sectional sample of 80 older adults living in old age homes and the community was compared in terms of level of physical activity and quality of life. The study was conducted in Soweto, Johannesburg. A computer-generated random sample of older adults aged 60 years and above participated. The Physical Activity Scale for the Elderly (PASE) and RAND 36 questionnaires were used for data collection. Descriptive statistics were used to describe the sample. Unpaired t-tests, Pearson’s correlation coefficient and chi-squared test explored the differences and associations between institutionalised and community living older adults. Results: Quality of life in old age home dwellers (M = 68.53 ± 19.55) was significantly lower (p = 0.025) than in community dwellers (M = 77.74 ± 16.25). The mean physical activity score was also significantly (p = 0.000) lower in old age home dwellers (M = 20.18 ± 24.52) compared with community dwellers (M = 190.31 ± 82.81). Conclusion: Older adults who live in the community have a higher quality of life and physical activity levels compared with those who live in institutions (old age homes).
A systematic review on self-management education campaigns for back pain
(AOSIS, 2019) Nkhata, Loveness A.; Brink, Yolandi; Ernstzen, Dawn; Louw, Quinette A.
Background: Evidence-based clinical practice guidelines on back pain recommend early management and use of approaches that emphasise self-management, psychological and physical therapies. Lately, mass media campaigns, addressing misconceptions about back pain, have been conducted in developed countries. Objectives: This study retrieved and synthesised the contents of back pain messages and described the outcomes and effectiveness of the media campaigns. Method: Seventeen key words and 10 electronic databases were used to conduct a search between February and July 2018. Authors screened titles, abstracts and full-text articles independently to identify eligible studies. Data were reported using narratives because of heterogeneity in the outcomes. Results: Appraisal of articles was done using the Physiotherapy Evidence Database scale for randomised controlled trials (RCT) (one) or the Joanna Briggs Institute checklist for non-RCT (four). The campaigns were conducted in the general population in Australia, Canada, Norway, the Netherlands and Scotland. The message ‘stay as active as possible’ increased participants’ awareness and influenced their health beliefs and healthcare utilisation behaviours resulting in reductions in sick leave days, work disability, healthcare utilisation and claims. Conclusion: The back pain campaign message ‘stay as active as possible’ increased participants’ awareness and influenced their health beliefs and healthcare utilisation behaviours. Even though the campaigns were done in high-income countries, their contents and methods are transferable to developing countries. However, their implementation must be tailored and efficient and cost-effective methods need to be explored.
Towards a needs-based design of the physical rehabilitation workforce in South Africa : trend analysis [1990–2017] and a 5-year forecasting for the most impactful health conditions based on global burden of disease estimates
(Springer Nature, 2021-05-13) Louw, Quinette A.; Grimmer-Somers, Karen; Berner, K.; Conradie, T.; Bedada, D. T.; Jesus, T. S.
Background: Rehabilitation can improve function in many people with chronic health conditions. It is important to consider priority conditions requiring rehabilitation, so it can be realistically positioned and costed in national health financing systems like South Africa (SA)‘s proposed National Health Insurance (NHI). This paper describes temporal trends of top-ranked conditions on years lived with disability (YLDs) rates in SA, for which physical rehabilitation can ameliorate associated disability. Methods: This study is a systematic synthesis of publicly available Global Burden of Disease (GBD) 2017 estimates. The top 11 conditions contributing most to YLDs and for which evidence-based rehabilitation interventions exist were identified. Age-standardized rates per 100,000 and YLDs counts were extracted from 1990 to 2017. Significance of changes in temporal trends was determined using Mann-Kendall trend tests. Best-fit rates of yearly changes were calculated per condition, using GBD estimates (2012–2017), and extrapolated (by imposing the bestfit regression line onto results for each subsequent predicted year) as forecasts (2018–2022). Results: Trends for YLDs counts per condition year (1990–2017) and forecasted values (2018–2022) showed an overall steady increase for all conditions, except HIV and respiratory conditions. YLDs counts almost doubled from 1990 to 2017, with a 17% predicted increase from 2017 to 2022. The proportionate contribution to YLDs counts reduced over time for all conditions, except HIV. Although age-standardized YLDs rates appear relatively stable over the analyzed periods for all conditions (except HIV, respiratory conditions and type 2 diabetes), trend changes in YLDs rates over 28 years were significant for all conditions, except neonatal (p = 0.855), hearing loss (p = 0.100) and musculoskeletal conditions (p = 0.300). Significant trend decreases were apparent for 4/9 conditions, implying that another 5/9 conditions showed trend increases over 28 years. Predicted all-age prevalence in 2022 suggests relatively large increases for cardiovascular disease and heart failure, and burns, while relative decreases are predicted for fractures and dislocations, stroke, and musculoskeletal conditions. Conclusion: Rehabilitation needs in SA are potentially massive and unmet, highlighting the need for innovative and context-specific rehabilitation that considers current local needs and projected changes. These findings should be considered when designing the NHI and other schemes in SA to ensure human and financial resources are deployed efficiently.
An update on the prevalence of low back pain in Africa : a systematic review and meta-analyses
(BioMed Central, 2018-06-21) Morris, Linzette D.; Daniels, Kurt J.; Ganguli, Bhaswati; Louw, Quinette A.
Background: Low back pain (LBP) remains a common health problem and one of the most prevalent musculoskeletal conditions found among developed and developing nations. The following paper reports on an updated search of the current literature into the prevalence of LBP among African nations and highlights the specific challenges faced in retrieving epidemiological information in Africa. Methods: A comprehensive search of all accessible bibliographic databases was conducted. Population-based studies into the prevalence of LBP among children/adolescents and adults living in Africa were included. Methodological quality of included studies was appraised using an adapted tool. Meta-analyses, subgroup analyses, sensitivity analyses and publication bias were also conducted. Results: Sixty-five studies were included in this review. The majority of the studies were conducted in Nigeria (n = 31;47%) and South Africa (n = 16;25%). Forty-three included studies (66.2%) were found to be of higher methodological quality. The pooled lifetime, annual and point prevalence of LBP in Africa was 47% (95% CI 37;58); 57% (95% CI 51;63) and 39% (95% CI 30;47), respectively. Conclusion: This review found that the lifetime, annual and point prevalence of LBP among African nations was considerably higher than or comparable to global LBP prevalence estimates reported. Due to the poor methodological quality found among many of the included studies, the over-representation of affluent countries and the difficulty in sourcing and retrieving potential African studies, it is recommended that future African LBP researchers conduct methodologically robust studies and report their findings in accessible resources. Trial registration: The original protocol of this systematic review was initially registered on PROSPERO with registration number CRD42014010417 on 09 July 2014.
Virtual reality exposure therapy as treatment for pain catastrophizing in fibromyalgia patients : proof-of-concept study (study protocol)
(BioMed Central, 2011-04-30) Morris, Linzette D.; Grimmer-Somers, Karen A.; Spottiswoode, Bruce; Louw, Quinette A.
ABSTRACT: Background. Albeit exercise is currently advocated as one of the most effective management strategies for fibromyalgia syndrome (FMS); the implementation of exercise as a FMS treatment in reality is significantly hampered by patients' poor compliance. The inference that pain catastrophizing is a key predictor of poor compliance in FMS patients, justifies considering the alteration of pain catastrophizing in improving compliance towards exercises in FMS patients. The aim of this study is to provide proof-of-concept for the development and testing of a novel virtual reality exposure therapy (VRET) program as treatment for exercise-related pain catastrophizing in FMS patients. Methods. Two interlinked experimental studies will be conducted. Study 1 aims to objectively ascertain if neurophysiological changes occur in the functional brain areas associated with pain catastrophizing, when catastrophizing FMS subjects are exposed to visuals of exercise activities. Study 2 aims to ascertain the preliminary efficacy and feasibility of exposure to visuals of exercise activities as a treatment for exercise-related pain catastrophizing in FMS subjects. Twenty subjects will be selected from a group of FMS patients attending the Tygerberg Hospital in Cape Town, South Africa and randomly allocated to either the VRET (intervention) group or waiting list (control) group. Baseline neurophysiological activity for subjects will be collected in study 1 using functional magnetic resonance imaging (fMRI). In study 2, clinical improvement in pain catastrophizing will be measured using fMRI (objective) and the pain catastrophizing scale (subjective). Discussion. The premise is if exposing FMS patients to visuals of various exercise activities trigger the functional brain areas associated with pain catastrophizing; then as a treatment, repeated exposure to visuals of the exercise activities using a VRET program could possibly decrease exercise-related pain catastrophizing in FMS patients. Proof-of-concept will either be established or negated. The results of this project are envisaged to revolutionize FMS and pain catastrophizing research and in the future, assist health professionals and FMS patients in reducing despondency regarding FMS management. Trial registration PACTR201011000264179.

Browsing by Author "Louw, Quinette A."

Results Per Page

Sort Options