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OBJECTIVE: To evaluate the effect of individualized exercises based on movement fault (MF) control on pain intensity and disability in subjects with chronic subacromial pain syndrome (SAPS). DESIGN: Randomized Controlled Trial (IRCT20221126056621N1) SETTING: Rehabilitation clinics PARTICIPANTS: Thirty-eight participants with chronic SAPS (aged 52.23(8.47), 60 %woman). INTERVENTIONS: The participants were randomly allocated to one of the intervention groups (individualized exercises based on MFs control test designed to target specific movement faults) or the control group (commonly prescribed general scapular stabilization exercises). Both groups received exercise sessions twice a week for four weeks. MAIN OUTCOME MEASURES: The primary outcome measures were pain intensity at rest (PR) and during arm raising (PAR) using a visual analog scale. Disability was assessed as a key secondary outcome, including the disabilities of the arm, shoulder, and hand (DASH) questionnaire and the Shoulder Pain and Disability Index (SPADI). RESULTS: Following completion of all exercise sessions, PAR was significantly lower in the intervention group compared to the control group (mean [CI]: 9.17 [0.31 to 18.03], p=0.04), with a large effect size [0.68]. The reduction of PAR remained significantly lower in the intervention group than in the control group after four months of follow-up (mean [CI]: 18.29 [9.09 to 27.48], p=0.00) with a large effect size [1.27]. Disability significantly decreased at two month (mean=14.58, p=0.002 on SPADI index; mean=10.26, p=0.006 on DASH index) and four month (mean=19.85, p=0.00 on SPADI index; mean=12.09, p=0.001 on DASH index) follow ups in the intervention group compared to the control group. CONCLUSION: Individualized exercises based on MFs control of the shoulder region was accompanied by decreased PAR and disability in subjects with SAPS.
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BACKGROUND: Knee pain is a common musculoskeletal problem. Lower extremity movement impairments could alter stresses in different planes and contribute to knee pain. Classifying these impairments may be helpful in the diagnosis and treatment of knee problems. Movement system impairment (MSI)-based classification is a system to evaluate movement impairments. Trials that involve this classification are limited. Therefore, it will be of interest to examine the effect of movement system impairment-based classification treatment compared to routine physiotherapy in individuals with tibiofemoral rotation syndrome. METHODS: Twenty-two individuals with knee pain aged 18-40 years (2 males, 20 females) diagnosed with tibiofemoral rotation (TFR) syndrome were included. After initial evaluation, individuals were randomly assigned into two treatment groups (MSI-based treatment and routine physiotherapy). Both treatment groups contained 8 treatment sessions over 4 weeks. Alignment and movement impairments data form, a numeric rating scale (NRS), and the Kujala Disability Questionnaire were assessed at baseline and after a four-week intervention. Independent samples t-test and Mann-Whitney U test were used for quantitative variables, and Fisher's exact test was employed for qualitative variables to compare the groups. One-way Analysis of variance (ANOVA) and paired samples t-test were utilized to within-group changes of quantitative variables, and qualitative variables were analyzed with the McNemar test. RESULTS: The results showed that pain intensity and disability significantly decreased within and between groups after intervention (P > 0.05). There were also statistically significant differences between treatment groups for 3 out of 6 alignment and movement impairments (PS-FAdd/IR, Step down-Add/Valgus, and STS-Add/Valgus) (P > 0.05). Within-group differences for alignment and movement impairments were significant only for the MSI-based treatment group (P > 0.05). CONCLUSIONS: The findings suggest that a specific MSI-based treatment, considering a homogenous group of individuals with knee pain, may contribute to pain, disability, and alignment and movement impairments improvement. Therefore, it is important to notice the classification-based treatment for individuals with knee pain. TRIAL REGISTRATION NUMBER (TRN) AND DATE OF REGISTRATION: The trial was registered at the ( https://www.irct.ir ), (IRCT20210505051181N3) on 17/7/2021.
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Background: Gestational diabetes mellitus (GDM) is the most common medical complication of pregnancy, and it can lead to complications for the mother and the infant/fetus. This was especially evident during the COVID-19 pandemic. Therefore, the present systematic review aimed to describe the changes in screening, diagnosis, management, and outcomes of gestational diabetes during the COVID-19 pandemic. Methods: The systematic review was conducted from December 2019 until January 1, 2022. To find articles related to the purpose of the study, PubMed, Scopus, Web of Science, and WHO were searched using relevant and validated keywords using MeSH/Emtree. Results: In total, 675 entries were ascertained from the database inquiry, and 17 scholarly works were deemed suitable for inclusion in the final review. The salient conclusions derived from this review were as follows: (a) During the COVID-19 pandemic, there was a significant decrease in the use of OGTTs and a rise in the use of HbA1c assays for both GDM screening and diagnosing. (b) A predominant number of physicians incorporated some variation of telemedicine to remotely supervise and conduct follow-up evaluations of patients with GDM. Various strategies are presented for the provision of prenatal care to women afflicted with GDM, such as concentrating on high-risk demographics, the initiation of lifestyle modifications at early stages, and the implementation of remote patient monitoring techniques. The 'single test procedure' is identified as the most suitable for the preliminary screening of GDM. The OGTT should be assigned clinical precedence in patients at high risk during the ongoing COVID-19 pandemic. Additionally, Medical Nutrition Therapy (MNT) was established as the primary management strategy, and the most influential determinant of the transition from dietary adjustments to pharmacotherapy was the Fasting Blood Glucose (FBG) levels during the second trimester. Conclusion: Suggested strategies for GDM screening and management during the pandemic integrated into routine antenatal care, emphasized the importance of remote diabetes education and technology utilization during health emergencies.
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BACKGROUND: To facilitate evidence-based practice (EBP) in physiotherapy in Iran and guide future improvements, it is crucial to identify what barriers and facilitators exist in the current system from the physiotherapist's perspective. Therefore, the purpose of this study was to explore the barriers and facilitators of EBP in physiotherapy in Iran. METHODS: This qualitative study was conducted using a phenomenological approach from January to July 2023 in Iran. The sampling process started with a purposive approach, and then an attempt was made to identify and interview more potential samples with the snowball approach. Thematic analysis was used to analyse the collected qualitative data. RESULTS: 44 individuals, including 37 physiotherapists and seven faculty members, participated in this study. Several barriers and facilitators to evidence-based physiotherapy practice in Iran were found and then put into three themes: (1) individual factors, (2) practice environment factors, and (3) extra-organisational factors. The most common barriers were time/workload pressures, financial incentives, lack of motivation, weakness in English, managers' pressures, inadequate awareness among patients, infrastructure limitations, poor economic situation, Internet restrictions, inappropriateness of the educational curriculum, difficult access to scientific research, and lack of insurance coverage for up-to-date therapies. CONCLUSIONS: Although most of the participants had a very positive view of physiotherapy based on scientific evidence, various obstacles have prevented this approach from being well implemented in Iran. Therefore, it is necessary to move towards minimising the existing barriers at the individual, practice environment, and extra-organisational levels by adopting effective multilateral policies.
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Práctica Clínica Basada en la Evidencia , Motivación , Humanos , Irán , Investigación Cualitativa , Modalidades de FisioterapiaRESUMEN
PURPOSE: To synthesize the effect of exercise training on functional capacity, muscle strength, exercise capacity, dialysis efficacy, and quality of life (QOL) in children and adolescents with CKD. METHODS: PubMed/Medline, Scopus, PEDro, Web of Science, CINAHL, Cochrane, and Embase were searched from inception to September 30, 2023. Randomized control trials (RCTs) and clinical trials that assessed the effect of exercise training programs on functional capacity, muscle strength, exercise capacity, dialysis efficacy, and QOL in children and adolescents with CKD were included. Random effect model and meta-regression were used for the meta-analysis. RESULTS: Four clinical trials and three RCTs were included. The results showed that exercise training improves strength, but meta-analysis did not show a significant effect of exercise on functional capacity (WMD: 1.02; 95% CI: - 0.14 to 2.18; p = 0.083) and QOL (WMD: 8.00; 95% CI: - 3.90 to 19.91; p = 0.187). Subgroup analysis revealed that more than 25 sessions and 45 min per session of intervention, a PEDro score of more than 5, and being younger than 12 years of age had a large effect on functional capacity and QOL results. Due to the limited number of studies that reported the effect of exercise on dialysis efficacy and exercise capacity, the findings were inconclusive. CONCLUSION: Exercise training could benefit children and adolescents with CKD by increasing their strength. Longer exercise interventions may be beneficial for improving functional capacity and QOL. Future well-designed RCTs should overcome the existing limitations using adequate sample sizes and longer exercise durations.
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BACKGROUND: Cystic fibrosis (CF) is an autosomal recessive disorder caused by abnormal function of the chloride ion channels and characterized by pancreatic insufficiency and chronic endobronchial airway infection. Pulmonary dysfunction is very common and could lead to a reduction in the quality of life. Airway clearance techniques (ACT) and physical exercises are introduced as one of the main components of treatment. Therefore, it will be of interest to examine the effect of aerobic exercises compared to conventional chest physiotherapy (CPT) on pulmonary function, functional capacity, sputum culture, and quality of life in patients with CF. METHODS: Thirty patients with CF will participate in a double-blind parallel controlled trial containing 18 sessions of treatment. Group A consists of CPT and placebo aerobic exercise, and group B includes aerobic exercise and placebo CPT. Pulmonary function, functional capacity, sputum culture, and quality of life will be evaluated with a spirometry test, 6-min walk test (6MWT), sputum culture test, and the Cystic Fibrosis Questionnaire-Revised (CFQ-R), respectively, before and after the intervention. DISCUSSION: We will evaluate and compare the effectiveness of aerobic exercises and conventional chest physiotherapy on pulmonary function, functional capacity, sputum culture, and quality of life. Comparing these two treatment patterns can contribute to a better understanding of the effectiveness. Therefore, if there is a significant difference between the two treatments, the superior treatment will be prioritized clinically. TRIAL REGISTRATION: https://www.irct.ir , IRCT20210505051181N5. Registered on 19 February 2023.
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Fibrosis Quística , Humanos , Adolescente , Niño , Fibrosis Quística/terapia , Esputo , Calidad de Vida , Modalidades de Fisioterapia , Ejercicio Físico , Ensayos Clínicos Controlados Aleatorios como AsuntoRESUMEN
Introduction: Little is known about the impact of the coronavirus on sexual behavior, function, and satisfaction. Aim: The aim of the present study was to systematically review people's sexual function and behaviors and their changes in sexual activities during the COVID-19 pandemic. Methods: Comprehensive searches in PubMed, Web of Science, and Scopus were conducted with keywords in accordance with MeSH terms: COVID-19, SARS-CoV-2, coronavirus, sexual health, sexual function, sexual dysfunctions, sexuality, sexual orientation, sexual activities, and premarital sex. Two reviewers independently assessed full-text articles according to predefined criteria: original design, English studies, and investigating either the general population or sexual minorities. Results: Risk of bias in the studies was assessed by the Newcastle-Ottawa Scale, and data were pooled via random effects meta-analyses. We utilized the standardized mean difference to evaluate the effects of the COVID-19 pandemic on sexual activity, functioning, and satisfaction. We included 19 studies in the analysis and 11 studies in the meta-analysis, with a sample size of 12 350. To investigate sexual activity changes, a sample size of 8838 was entered into the subgroup analysis, which showed a significant decrease in both genders (5821 women, P < .033; 3017 men, P < .008). A subgroup meta-analysis showed that the sexual function of men and women during the COVID-19 pandemic significantly declined (3974 women, P < .001; 1427 men, P < .001). Sexual desire and arousal decreased in both genders, though mainly in women. In investigating sexual satisfaction changes during the COVID-19 pandemic, a meta-analysis with a sample size of 2711 showed a significant decrease (P < .001). The most indicative changes in sexual behaviors during the pandemic were the increase in masturbating and usage of sex toys. Greater COVID-19 knowledge was associated with lower masturbation, oral sex, and vaginal sex. The more protective behaviors were associated with less hugging, kissing, cuddling, genital touching, watching porn with a partner, and vaginal sex. Conclusion: The COVID-19 pandemic led to increased challenges and changes for individuals' sexual behaviors. Efforts for preventive strategies should therefore be concentrated between pandemics, while ensuring that there is information available to the population during a pandemic for help in times of psychological distress or crisis.
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BACKGROUND: Pelvic floor muscle training (PFMT) is a conservative treatment program for the management of lower urinary tract dysfunction (LUTD). This systematic review aimed to investigate the overall effectiveness of PFMT on LUTD in people with multiple sclerosis (MS). METHODS: Seven databases (PubMed/Medline, Scopus, PEDro, WOS, CINAHL, Cochrane, and Embase) were searched between 1990 and July 2019. We investigated urine leakage as our primary outcome. The secondary outcomes were neurogenic bladder symptoms measured by the overactive bladder questionnaire (OAB-V8 questionnaire) and the power/endurance of pelvic floor muscles. RESULTS: Fifteen studies were identified as eligible. Both urine leakage (standardized mean difference (SMD) = 0.50, 95% CI [-0.78, -0.23], and neurogenic bladder symptoms, SMD = -2.24, 95% CI [-4.44, -0.03] significantly decreased by PFMT in people with MS. PFMT increased the overall endurance and power of pelvic floor muscles moderately and significantly, SMD = 1.25, 95% CI [0.69, 1.81], and SMD = 0.64, 95% CI [0.24, 1.05], respectively. CONCLUSIONS: Moderate to high-quality studies showed the overall efficacy of PFMT in decreasing urine leakage and neurogenic bladder symptoms and increasing endurance and power of pelvic floor muscles. MS patients with lower urinary tract symptoms could benefit from PFMT in the short term.
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Esclerosis Múltiple , Sistema Urinario , Terapia por Ejercicio , Humanos , Esclerosis Múltiple/complicaciones , Esclerosis Múltiple/terapia , Diafragma Pélvico , Calidad de Vida , Resultado del TratamientoRESUMEN
OBJECTIVES: To identify differences in architectural parameters (size, fiber/pennation angle, fiber length, and echogenicity) of the quadriceps muscle, as a whole or any individual part of it, using imaging techniques in individuals with patellofemoral pain (PFP) compared to contralateral, asymptomatic limb or separate control group. BACKGROUND: Quadriceps muscles imbalance and weakness were proposed as risk factors for developing PFP. Although the muscle architecture (size, pennation/fiber angle and fiber length) is highly associated with skeletal muscle strength, it is not clear whether atrophy or any changes in architectural parameters of the quadriceps are presented in the PFP patients. METHODS: Observational studies in which the total size of the quadriceps or individual parts of it were measured using imaging techniques in the PFP patients were included in this review. Electronic databases (PubMed, SCOPUS, PEDro, CINAHL, WOS, and EMBASE) were searched between January 1990 and December 2019 with no restriction of language. Study selection and data extraction and quality assessment were conducted by two independent reviewers. RESULTS: Five cross-sectional studies were eligible to include in this review. Three out of five included studies that assessed the total size of the quadriceps and reported no significant differences between the PFP and healthy control group. Two out of five of the studies assessed the total size of the quadriceps between the symptomatic and asymptomatic limb of the PFP patients and reported the statistical difference between limbs. Only one study measured the fiber angle of the VMO muscle at the patella. Controversial results were found between studies that assessed the size of individual parts of the quadriceps. CONCLUSION: Due to the controversial results of the included studies, this systematic review failed to draw a conclusion on the role of quadriceps atrophy in PFP pathology. The limitation in PFP literature considering pennation/fiber angle, echogenicity and fiber length of individual parts of the quadriceps muscle, rises the need for research that focuses on the biomechanical properties of the quadriceps in PFP patients.
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Síndrome de Dolor Patelofemoral , Músculo Cuádriceps , Estudios Transversales , Humanos , Fuerza Muscular , Rótula , Músculo Cuádriceps/diagnóstico por imagenRESUMEN
OBJECTIVE: To evaluate the eligibility of the movement-based classification systems in the diagnosis of patients with low back pain. METHODS: The present systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta -Analysis guidelines. Different databases including PubMed, Science Direct, OVID, MEDLINE, CINAHL, EMBASE, ProQuest and Google Scholar were searched from January 1990 to December 2017. All studies assessed the reliability and validity of the movement-based classification systems to diagnose patients with low back pain were included. The keywords used to search the studies were: "reliability", "validity", "classification", "movement impairment" and "low back pain". Study selection and data extraction were performed by two independent reviewers. RESULTS: Sixteen articles were met the inclusion criteria. Of these articles, 13 studies assessed the reliability and validity of movement-based classification systems to categorize patients with low back pain. Two out of 16 articles compared patients with low back pain and healthy subjects and one article had no control group. CONCLUSIONS: The results of the reviewed studies demonstrated that movement-based classification systems are valid and reliable enough to categorize patients with low back pain.
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Dolor de la Región Lumbar , Humanos , Dolor de la Región Lumbar/diagnóstico , Movimiento , Reproducibilidad de los ResultadosRESUMEN
BACKGROUND: Patellofemoral pain (PFP) is a common overuse injury in physically active individuals. It is characterized by anterior knee, retropatellar, or prepatellar pain associated with activities that increase patellofemoral joint stress such as squatting, stair ascending and descending, running, jumping, prolonged sitting, and kneeling. The etiology of PFP is believed to be multifactorial. Recently, proximal factors have been shown to influence the biomechanics of patellofemoral joint. OBJECTIVE: The aim of the study was to assess hip and knee muscle activity during single leg stance and single leg squat in males with PFP and a control group without PFP. METHODS: Eighteen males with PFP (age 24.2⯱â¯4.4 years) and 18 healthy subjects as controls (age 23.5⯱â¯3.8 years) were included. We evaluated gluteus medius, gluteus maximus, vastus medialis oblique (VMO), and vastus lateralis (VL) electromyographic (EMG) activity. The muscle activity and reaction time of the proposed muscles were assessed during single leg stance and single leg squat tasks. Independent t-test was used to identify significant differences between PFP and control groups. RESULTS: No difference in activity of the gluteus maximus muscle was found in either task (pâ¯>â¯0.5). Significant differences were found in activity of gluteus medius and VMO in both tasks (pâ¯<â¯0.05). VL muscle activity had significant difference in single leg stance (pâ¯=â¯0.01), however, had no significant difference in single leg squat (pâ¯=â¯0.1). No significant differences were found in reaction time of the four studied muscles during both single leg stance and single leg squat (pâ¯>â¯0.5). CONCLUSION: Males with PFP demonstrated altered gluteus medius, VMO, and VL muscle activity during single leg stance and single leg squat compared to healthy subjects. Gluteus maximus activity did not show any changes between groups. Moreover, muscle recruitment patterns were different between PFP and healthy groups.
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Articulación de la Rodilla/fisiopatología , Músculo Esquelético/fisiología , Músculo Esquelético/fisiopatología , Síndrome de Dolor Patelofemoral/fisiopatología , Adulto , Fenómenos Biomecánicos , Electromiografía , Articulación de la Cadera , Humanos , Masculino , Dimensión del Dolor , Músculo Cuádriceps/fisiopatología , Adulto JovenRESUMEN
OBJECTIVE: The objective of this review is to identify differences in quadriceps architectural parameters between healthy individuals and those with patellofemoral pain (PFP). INTRODUCTION: Patellofemoral pain is one of the most common causes of knee pain among physically active populations. Muscular imbalance may play an important role in patellar malalignment or patellar maltracking. A systematic review will clarify the possible architectural changes of quadriceps muscles in persons with PFP. INCLUSION CRITERIA: Eligible observational studies will include individuals younger than 50 years who have been diagnosed with unilateral or bilateral PFP. The comparator will be the contralateral, asymptomatic limb of the individual with PFP or a healthy matched subject. Studies that include measurement of quadriceps muscle size as the primary outcome will be considered. Studies in which participants had coexisting pathology, a history of lower limb surgery or injury, or pain originating from other joints will be excluded. METHODS: PubMed/MEDLINE (NLM), Scopus, Embase, Physiotherapy Evidence Database, Web of Science and CINAHL databases and multiple gray literature sources will be searched. Studies published since 1 January 1990 will be considered; there will be no language restriction. Retrieval of full-text studies, assessment of methodological quality and data extraction will be performed independently by two reviewers. If possible, meta-analyses will be performed, and a Grading of Recommendations, Assessment, Development and Evaluation (GRADE) Summary of Findings presented.
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Rótula/fisiopatología , Síndrome de Dolor Patelofemoral , Músculo Cuádriceps/fisiopatología , Ejercicio Físico , Humanos , Modalidades de Fisioterapia , Revisiones Sistemáticas como AsuntoRESUMEN
Patellofemoral pain (PFP) is a common knee disorder in orthopedic clinics. In the last decade, several investigations have considered the role of proximal factors in addition to local and distal factors in development of PFP. There is a hypothesis which suggests that impaired neuromuscular control and altered hip joint kinematic affect tibiofemoral and patellofemoral biomechanics. Hence, PFP may develop as a result. This article reviews studies assessing the relationship between altered hip mechanics and PFP. The Medline and PubMed databases were searched between January 2004 and October 2014. Two authors independently selected related articles using the same search strategy and key words. Among 149 articles, 16 met the review inclusion criteria. The study results were described in three sections: 1) kinematic studies, 2) muscle activity studies, and 3) postural stability studies. Increased hip adduction and internal rotation, gluteal muscle weakness, and neuromuscular impairment were common findings in patients with patellofemoral pain. Precise assessment of hip mechanics, including hip kinematic, muscle performance and postural stability, should be considered in the examination of patients with patellofemoral pain.
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Articulación de la Cadera/fisiopatología , Articulación de la Rodilla/fisiopatología , Síndrome de Dolor Patelofemoral/fisiopatología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Fenómenos Biomecánicos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Dimensión del Dolor , Adulto JovenRESUMEN
BACKGROUND: Categorizing patients with knee pain problems based on pathoanatomical sources has not proved to be the most effective method for directing physical therapy interventions. Movement system impairment (MSI) classification system may be an alternative in the assessment, diagnosis, and management of patients with knee pain. No previous study has been conducted to validate the proposed system in these patients. OBJECTIVE: To assess construct validity of the MSI classification system in patients with knee pain. DESIGN: A cross-sectional methodological study. SETTING: Rasul Akram Hospital. PARTICIPANTS: One hundred eighty subjects with knee pain aged 18-65 years. METHODS: The MSI classification recognizes seven categories of knee pain problems based on the findings from the symptoms and signs assessment. Three physical therapists examined subjects with knee pain. A principal component analysis (PCA) was used to derive proposed categories. Eigenvalues and a scree plot were also used to determine the factor retention. RESULTS: Four factors related to three proposed categories were extracted from the PCA. Two factors were related to tibiofemoral rotation (TFR) category. The other two factors were related to proposed categories patellar lateral glide (PLG) and tibiofemoral hypomobility (TFHypo). CONCLUSION: The results provided evidence for the construct validity of three (TFR, PLG, and TFHypo) of the seven categories proposed by MSI classification. In addition TFR was subcategorized into two groups which were named as tibial lateral rotation (TLR) and femoral adduction/medial rotation (FAdd/MR) in the present study.
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Articulación de la Rodilla/fisiopatología , Movimiento/fisiología , Dimensión del Dolor/métodos , Dolor/clasificación , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto JovenRESUMEN
BACKGROUND: The methods to standardize the test items used for classification of patients with knee pain based on the movement system impairment (MSI) approach have been established. To our knowledge, no study has concentrated on establishing reliability for proposed classification for knee pain problems. OBJECTIVE: The aim of the study was to assess intra- and intertester reliability of the knee MSI classification in patients with knee pain. DESIGN: A cross-sectional methodological study. SETTING: Rasul Akram Hospital. PARTICIPANTS: Ninety-six subjects with knee pain aged 18-65 years. METHODS: In order to examine intertester reliability, all three testers assessed the symptoms, signs and the MSI diagnosis of subjects with knee pain simultaneously. In order to assess intratester reliability, the procedure was exactly repeated after a one-week intersession period. Kappa values and percentages of agreement were calculated to analyze the reliability level. RESULTS: The kappa values for intra- and intertester reliability of the symptom items ranged from 0.83 to 1.00 and 0.00 to 0.83, respectively. For the sign items, the kappa values ranged from 0.18 to 1.00 and 0.00 to 0.82, respectively. Finally, the kappa values of intra- and intertester reliability for patients' classification judgments ranged from 0.66 to 0.71, and 0.48 to 0.58, respectively. CONCLUSION: The results of the present study indicate that intertester reliability for the symptoms, signs and classification judgments of patients with knee pain based on the MSI approach seemed generally acceptable. However, for intratester reliability, lower levels of the system were observed, probably due to different pain levels or pain behavior between test and retest sessions.