The Development and Pilot Testing of a Fidelity Checklist for a Family-Centered Telehealth Intervention for Parents of Children with Motor Delay.

This multi-methods study describes the development of a pediatric rehabilitation telehealth intervention fidelity checklist, estimates its inter-rater reliability, and documents raters' implementation experience. A literature scan and expert consultation identified eighteen key behaviors and categorized them into three subdomains, measured using a 5-point measurement system. To estimate the checklist's inter-rater reliability, three raters scored 33 video recordings. A Shrout and Fleiss Class 1,1 intraclass correlation (ICC)) and 95% confidence intervals (CI) calculated ICCs = 0.5 (CI: 0, 0.9) for both the Therapist and the Parent-Therapists subdomains, and the Parent subdomain an ICC = 0.3 (CI: 0, 0.8). In the implementation surveys, raters reported high levels of satisfaction (100%), ease of use (84% to 88%), and confidence in their video ratings (87% to 100%). Changes in procedures and scoring were recommended. Capturing raters' implementation experiences is crucial in the early evaluation of the fidelity checklists for telehealth.

Interactions of cumulative load with biomarkers of cartilage turnover predict knee cartilage change over 2 years: data from the osteoarthritis initiative.

The purpose was to investigate relationships of cumulative load and cartilage turnover biomarkers with 2-year changes in cartilage in knee osteoarthritis. From participants with Kellgren-Lawrence (KL) grades of 1 to 3, cartilage thickness and transverse relaxation time (T2) were computed from 24-month (baseline) and 48-month magnetic resonance images. Cumulative load was the interaction term of the Physical Activity Scale for the Elderly (PASE) and body mass index (BMI). Serum cartilage oligomeric matrix protein (COMP) and the nitrated form of type II collagen (Coll2-1 NO2) were collected at baseline. Multiple regressions (adjusted for baseline age, KL grade, cartilage measures, pain, comorbidity) evaluated the relationships of cumulative load and biomarkers with 2-year changes. In 406 participants (63.7 (8.7) years), interactions of biomarkers with cumulative load weakly predicted 2-year cartilage changes: (i) COMP × cumulative load explained medial tibia thickness change (R2 increased 0.062 to 0.087, p < 0.001); (ii) Coll2-1 NO2 × cumulative load explained central medial femoral T2 change (R2 increased 0.177 to 0.210, p < 0.001); and (iii) Coll2-1 NO2 × cumulative load explained lateral tibia T2 change (R2 increased 0.166 to 0.188, p < 0.001). Moderate COMP or Coll2-1 NO2 at baseline appeared protective. High COMP or Coll2-1 NO2, particularly with high BMI and low PASE, associated with worsening cartilage. Moderate serum concentrations of cartilage turnover biomarkers, at high and low physical activity, associated with maintained cartilage outcomes over 2 years. In conclusion, high concentrations of cartilage turnover biomarkers, particularly with high BMI and low physical activity, associated with knee cartilage thinning and increasing T2 over 2 years. Key Points • Higher quality cartilage may be better able to tolerate a larger cumulative load than poor quality cartilage. • Among participants enrolled in the Osteoarthritis Initiative Biomarkers Consortium Project, a representation of cumulative load exposure and its interaction with cartilage turnover biomarkers were weakly related with 2-year change in knee cartilage. • These findings suggest that cartilage turnover is a factor that modifies the relationship between loading exposure and cartilage loss in knee OA.

Difference in Physiotherapy Students' Training and Objective Structured Clinical Exam Performance Before and During COVID-19.

Purpose: The Objective Structured Clinical Examination (OSCE) and station examinations, in general, have been widely utilized in health professional programmes to evaluate students' clinical performance prior to advancing to a clinical placement. The COVID-19 pandemic impacted student preparation and implementation of our programme's OSCEs. The impact on changes in student OSCE performance due COVID-19 has not been well studied. This non-concurrent cohort study evaluated the difference before and during COVID-19 pandemic on Year 1 physiotherapy students' performances on an in-person OSCE by estimating the mean difference in cohort OSCE scores and safety occurrences. Methods: Two cohorts of MSc (PT) students were compared: Cohort A (not impacted by COVID-19) and Cohort B (impacted by COVID-19). Cohort scores were summarized as means and 95% CIs. Results: Overall OSCE scores for Cohort A and B were 77.9 and 81.9, respectively (d¯ = 4.0, 95% CI: 2.1, 5.8). Cohort B students were approximately 4 times more likely to demonstrate safety occurrences. Conclusion: The impact of COVID-19 did not adversely affect total OSCE scores; however, it did increase safety infractions.

Objectif: en général, les programmes pour les professionnels de la santé font largement appel à l'examen clinique objectif structuré (ECOS) et aux stations d'examen pour évaluer la performance clinique des étudiants avant leur passage au stage clinique. La pandémie de COVID-19 a nui à la préparation des étudiants et à la mise en œuvre des ECOS du programme de physiothérapie. Les effets sur les changements à la performance des étudiants à l'ECOS découlant de la COVID-19 n'ont pas été bien étudiés. La présente étude de cohorte non concomitante a permis d'évaluer la différence entre la performance des étudiants en première année de physiothérapie à un ECOS en personne avant et pendant la pandémie de COVID-19, d'après la différence moyenne des scores d'ECOS et des occurrences d'infractions aux règles de sécurité au sein des deux cohortes. Méthodologie: deux cohortes d'étudiants à la maîtrise en physiothérapie ont été comparées : la cohorte A (non touchée par la COVID-19) et B (touchée par la COVID-19). Les scores des cohortes ont été résumés sous forme de moyennes et d'IC à 95%. Résultats: les scores globaux de l'ECOS pour la cohorte A et la cohorte B s'élevaient à 77,9 et à 81,9, respectivement (d¯ = 4,0, IC à 95 % : 2,1, 5,8). Les étudiants de la cohorte B étaient environ quatre fois plus susceptibles de démontrer des occurrences d'infraction aux règles de sécurité. Conclusion: la COVID-19 n'a pas nui aux scores totaux de l'ECOS, mais les infractions aux règles de sécurité se sont accrues.

Barriers and Facilitators of a Community-Based, Slow-Stream Rehabilitation, Hospital-to-Home Transition Program for Older Adults: Perspectives of a Multidisciplinary Care Team.

The purpose of this study was to examine the perspectives of support staff, health care professionals, and care coordinators working in or referring to a community-based, slow-stream rehabilitation, hospital-to-home transition program regarding gaps in services, and barriers and facilitators related to implementation and functioning of the program. This was a qualitative descriptive study. Recruitment was conducted through purposive sampling, and 23 individuals participated in a focus groups or individual semi-structured interview. Transcripts were analyzed by six researchers using inductive thematic analysis. Themes that emerged were organized based on a socio-ecological framework. Themes were categorized as: (1) macro level, meaning gaps while waiting for program, limited program capacity, and gaps in service post-program completion; (2) meso level, meaning lack of knowledge and awareness of the program, lack of specific referral process and procedures, lack of specific eligibility criteria, and need for enhanced communication among care settings; or (3) micro level, meaning services provided, program participant benefits, person-centred communication, program structure constraints, need for use of outcome measures, and follow-up or lack of follow-up. Implementation of seamless patient information sharing, documentation, use of specific referral criteria, and use of standardized outcome measures may reduce the number of unsuitable referrals and provide useful information for referral and program staff.

Does peak expiratory flow moderate trajectories of cognitive function among individuals with lung diseases? A longitudinal analysis of the National Health and Aging Trends Study.

INTRODUCTION: Impaired cognitive function can co-exist in chronic respiratory diseases. However, it is not clear if peak expiratory flow (PEF) impacts changes in cognitive function. Our objective was to explore whether peak expiratory flow moderates trajectories of memory, visuospatial abilities, and executive function in individuals with chronic respiratory diseases. METHODS: This was an analysis of individuals with lung diseases from the National Health and Aging Trends Study. Multivariable-adjusted generalized linear mixed models were used to estimate trajectories of immediate and delayed recall, and clock drawing over a 10-year follow-up. The interaction between PEF and time were plotted using sex-specific values for peak expiratory flow at 10th, 50th and 90th percentiles. RESULTS: In females, interactions of time-by-PEF were found for both immediate (n = 489, t = 2.73, p<0.01) and delayed recall (n = 489, t = 3.38, p<0.01). Females in the 10th vs. 90th percentile of PEF declined in immediate recall at 0.14 vs. 0.065 words/year, and 0.17 vs. 0.032 words/year for delayed recall. Among males, recall declined linearly over 10 years (immediate recall: n = 296, t = -3.08, p < 0.01; delayed recall: n = 292, t = -2.46, p = 0.02), with no interaction with PEF. There were no time-by-PEF interactions nor declines over time in clock drawing scores in both sexes (females: n = 484, t = 0.25, p = 0.81; males: n = 291, t = -0.61, p = 0.55). CONCLUSION: Females with the lowest PEF values experienced the greatest rates of decline in immediate and delayed recall over 10 years of follow-up, whereas males experienced similar declines in memory outcomes across all levels of PEF. Clock drawing scores remained stable over 10 years in both sexes.

Is It Really Worth the Effort? Examining the Effects of Mental Fatigue on Physical Activity Effort Discounting.

Physical activity (PA) guidelines are informed by epidemiological evidence but do not account for people's motivation for exerting physical effort. Previous research has shown that people are less motivated to engage in moderate- to vigorous-intensity PA when fatigued. In a two-study series, we investigated how intensity and duration affected people's willingness to engage in PA using an effort-discounting paradigm. A secondary purpose was to examine whether effort discounting was affected by mental fatigue. Both studies revealed a significant Intensity × Duration interaction demonstrating a reduced willingness to engage in PA of higher intensities across increasing duration levels. Study 1 demonstrated greater effort discounting for vigorous-intensity PA with increasing mental fatigue; however, this effect was not observed in Study 2. Findings provide novel insight toward people's motivation for engaging in PA based on the properties of the task, and some evidence suggesting feelings of fatigue may also influence motivation to exert physical effort.

Sex Differences in Functional Capacity in Older Adults With Stroke: An Analysis of Data From the National Health and Aging Trends Study.

OBJECTIVE: Women experience greater disability following stroke, but biological sex differences in both overall and specific domains of functional capacity are not well understood. The primary objective of this study was to examine sex differences in overall functional capacity (Short Physical Performance Battery [SPPB] score) cross-sectionally and longitudinally over a 3-year follow-up period. The secondary objective was to determine whether sex differences exist in specific domains of functional capacity of walking speed and lower extremity functional strength. METHODS: This study was a secondary analysis of data of individuals with stroke from the National Health and Aging Trends Study. For the cross-sectional analyses, general linear models were used to examine differences between 293 men and 427 women in SPPB, walking speed, and the 5-Times Sit-to-Stand Test (5XSST). For the longitudinal analysis, survey-weighted, multivariable-adjusted generalized linear mixed models were used to compare 3-year trajectories in SPPB scores between the sexes (87 men, 153 women). RESULTS: Women had lower SPPB scores at baseline (difference = 0.9, linearized SE = 0.3) and over 3 years. SPPB scores declined similarly between men and women. Women had lower walking speed (difference = 0.08 m/s, SE = 0.02) as compared with men, but men and women had similar 5XSST scores (difference = 0.6 seconds, SE = 0.5). CONCLUSION: Older women with stroke have clinically meaningfully lower overall functional capacity as compared with older men but decline at a similar rate over time. Walking speed was lower in older women with stroke, but similar between sexes in 5XSST. IMPACT: Women with stroke have poorer functional capacity compared with men, which reinforces the importance of targeted stroke rehabilitation strategies to address these sex-specific disparities. LAY SUMMARY: Women with stroke have poorer outcomes in terms of their ability to move around the community when compared with men. However, both men and women with stroke have similar physical functioning over time.

Description and Functional Benefits of Meeting Frequency, Intensity, and Time of Resistance and Cardiovascular Exercises: A Study of Older Adults in a Community-Based, Slow-Stream Rehabilitation, Hospital-to-Home Transition Program.

This prospective cohort study described cardiovascular and resistance exercises completed by older adults in a community-based, slow-stream rehabilitation, hospital-to-home transition program; compared exercises completed to the American College of Sports Medicine (ACSM) exercise guidelines; and, assessed differences in Late Life Function and Disability Index (LLFDI)-Function Component (FC) between older adults who met and did not meet the ACSM guidelines. Descriptive statistics and Factorial ANCOVA were conducted. For cardiovascular exercise 59.3% of participants met frequency, 73.4% met intensity, and 35.9% met time. For resistance exercise, 67.2% of participants met frequency, 42.2% met intensity, and 76.6% number of repetitions. Participants who met both frequency and time for cardiovascular exercise had higher LLFDI-FC scores, as did those who met intensity and/or number of repetitions for resistance exercise. The findings provide support that older adults engaged in a slow-stream rehabilitation program can meet the ACSM exercise guidelines for community-dwelling older adults, and that meeting the guidelines improves function.

Assessing the inter-rater and intra-rater reliability of the Physical Therapy Competence Assessment for Airway Suctioning (PT-CAAS).

BACKGROUND AND PURPOSE: The Physical Therapy Competence Assessment for Airway Suctioning (PT-CAAS) is a recently developed measure to assess the clinical competence of physiotherapists who perform airway suctioning with adults. The purpose of this study was to assess the inter-rater and intra-rater reliability of the PT-CAAS. METHODS: Scoring rules were developed through expert consultation. Reliability was then assessed using nine videos of suctioning performed in a simulated learning environment. A repeated measures design was used, with two replicate sets of measurements made by each participant for all videos. Data were analyzed using a repeated measures model for the concurrent assessment of inter-rater and intra-rater reliability. Participants were physiotherapists with suctioning experience. RESULTS: Twenty physiotherapists completed initial scoring and re-scoring for all nine videos; their data were included in the analysis. Intraclass correlation coefficients (ICCs) for inter-rater reliability ranged from 0.569 [lower one-sided 95% confidence interval (CI): 0.395; standard error of measurement (SEM): 0.963] for infection control to 0.759 (lower one-sided 95% CI: 0.612; SEM: 0.722) for post-suctioning assessment and care. The inter-rater ICC for overall performance was 0.752 (lower one-sided 95% CI: 0.602; SEM: 0.660). ICCs for intra-rater reliability ranged from 0.759 (lower one-sided 95% CI: 0.197; SEM 0.721) for infection control to 0.860 (lower one-sided 95% CI: 0.544; SEM: 0.550) for post-suctioning assessment and care. The intra-rater ICC for overall performance was 0.867 (lower one-sided 95% CI: 0.559; SEM: 0.483). DISCUSSION: Evidence of moderate to good inter-rater and good intra-rater reliability was found; however, the results should be interpreted with caution given the wide CIs and relatively large SEMs. Improved assessor training and assessments of reliability using a larger sample size are recommended.

Long-Term Enrollment in Cardiac Rehabilitation Benefits of Cardiorespiratory Fitness and Skeletal Muscle Strength in Females with Cardiovascular Disease.

Background: The benefits of short-term cardiac rehabilitation (CR) for improving fitness are well known, but the effects of long-term maintenance-phase CR are less well established. Moreover, changes in cardiorespiratory fitness (CRF) and muscle strength with long-term CR have never been examined specifically in females, a population that is under-researched and under-represented in cardiovascular research. The objective of this retrospective pilot study was to estimate changes in CRF and muscle strength in females enrolled in a long-term CR program. Methods: Data from 39 females (mean ± standard deviation age 65 ± 9 years) enrolled for at least 1 year in a maintenance-phase CR program were analyzed. The program consisted of aerobic and resistance training, and data were collected annually for CRF (peak oxygen consumption [VO2peak, mL/kg/min]) and skeletal muscle strength (one-repetition maximum tests for chest press, seated row, and knee extension, kg). Mixed-model analyses were used to determine changes in CRF over the 5-year follow-up (203 observations) and muscle strength over 6 years (108 observations). Results: The CRF increased in females by 1.8%/year over 5 years of CR enrollment, and muscle strength increased by 0.6%-2.1%/year over 6 years. These findings are in contrast to the expected age-related declines in fitness over time. Conclusion: The positive long-term benefits on CRF and muscle strength in females provide initial preliminary support for maintenance-based CR, especially given that this population is commonly under-researched and under-represented in the CR literature.

Physiotherapy Students' Performance in Clinical Education: An Analysis of 1 Year of Canadian Cross-Sectional Data.

Purpose: This research examines 1 year of cross-sectional, Canada-wide ratings from clinical instructors using the Canadian Physiotherapy Assessment of Clinical Performance (ACP) and analyzes the performance profiles of physiotherapy students' performance ratings over the course of their entry-to-practice clinical placements. Method: Canadian physiotherapy programmes that use the ACP were invited to submit anonymized, cross-sectional data for placements completed during 2018. Descriptive analyses and summary statistics were completed. Mixed-effects modelling was used to create typical performance profiles for each evaluation criterion in the ACP. Stepwise ordered logistic regression was also completed. Results: Ten programmes contributed data on 3,290 placements. Profiles were generated for each ACP evaluative item by means of mixed-effects modelling; three profiles are presented. In all cases, the predicted typical performance by the end of 24 months of study was approximately the rating corresponding to entry level. Subtle differences among profiles were identified, including the rate at which a student may be predicted to receive a rating of "entry level." Conclusions: This analysis identified that, in 2018, the majority of Canadian physiotherapy students were successful on clinical placements and typically achieved a rating of "entry level" on ACP items at the end of 24 months.

Objectif : étude transversale d'un an des évaluations canadiennes des moniteurs cliniques au moyen de l'Évaluation physiothérapique canadienne de la performance clinique (ÉPC) pour analyser les profils de performance des étudiants en physiothérapie pendant la durée de leurs stages cliniques débutants. Méthodologie : les programmes de physiothérapie canadiens qui font appel à l'ÉPC ont été invités à soumettre des données transversales anonymisées sur les stages effectués en 2018. Les chercheurs ont procédé à des analyses descriptives et des statistiques sommaires. Ils ont utilisé des modèles non linéaires à effets mixtes pour créer des profils de performance types pour chaque critère d'évaluation de l'ÉPC. Ils ont également procédé à la régression logistique séquentielle. Résultats : dix programmes ont fourni des données sur 3 290 stages. Les chercheurs ont produit des profils pour chaque point d'évaluation de l'ÉPC au moyen du modèle non linéaire à effets mixtes et en ont retenu trois. Dans tous les cas, la performance type anticipée à la fin des 24 mois d'étude correspondait environ au classement de premier échelon. Les chercheurs ont constaté des différences discrètes entre les profils, y compris la vitesse à laquelle il est possible d'anticiper qu'un étudiant recevra un classement de premier échelon. Conclusions : cette analyse a déterminé qu'en 2018, la majorité des étudiants en physiothérapie canadiens réussissaient leur stage clinique, et ils obtenaient habituellement une note de premier échelon aux points de l'ÉPC à la fin des 24 mois.

Patient gender does not influence referral to an orthopaedic surgeon by advanced practice orthopaedic providers: a prospective observational study in Canada.

BACKGROUND: The role of an advanced practice physiotherapist has been introduced in many countries to improve access to care for patients with hip and knee arthritis. Traditional models of care have shown a gender bias, with women less often referred and recommended for surgery than men. This study sought to understand if patient gender affects access to care in the clinical encounter with the advanced practice provider. Our objectives were: (1) To determine if a gender difference exists in the clinical decision to offer a consultation with a surgeon; (2) To determine if a gender difference exists in patients' decisions to accept a consultation with a surgeon among those patients to whom it is offered; and, (3) To describe patients' reasons for not accepting a consultation with a surgeon. METHODS: This was a prospective study of 815 patients presenting to a tertiary care centre for assessment of hip and knee arthritis, with referral onward to an orthopaedic surgeon when indicated. We performed a multiple logistic regression analysis adjusting for severity to address the first objective and a simple logistic regression analysis to answer the second objective. Reasons for not accepting a surgical consultation were obtained by questionnaire. RESULTS: Eight hundred and fifteen patients (511 women, 304 men) fulfilled study eligibility criteria. There was no difference in the probability of being referred to a surgeon for men and women (difference adjusted for severity = - 0.02, 95% CI: - 0.07, 0.02). Neither was there a difference in the acceptance of a referral for men and women (difference = - 0.05, 95% CI: - 0.09, 0.00). Of the 14 reasons for declining a surgical consultation, 5 showed a difference with more women than men indicating a preference for non-surgical treatment along with fears/concerns about surgery. CONCLUSIONS: There is no strong evidence to suggest there is a difference in proportion of males and females proceeding to surgical consultation in the model of care that utilizes advanced practice orthopaedic providers in triage. This study adds to the evidence that supports the use of suitably trained alternate providers in roles that reduce wait times to care and add value in contexts where health human resources are limited. The care model is a viable strategy to assist in managing the growing backlog in orthopaedic care, recently exacerbated by the COVID-19 pandemic.

Muscle strength gains after strengthening exercise explained by reductions in serum inflammation in women with knee osteoarthritis.

Background Individuals with knee osteoarthritis have elevated circulating inflammatory markers and altered cartilage properties but it is unclear if these features adapt to exercise. We aimed to determine (1) whether inflammatory markers, cartilage transverse relaxation time and thickness mediate the effect of body mass index (BMI) on quadriceps strength at baseline; and (2) whether these changes explain variance in quadriceps strength improvements after 12 weeks of exercise in women with knee osteoarthritis. Methods This secondary analysis (17 women with clinical knee osteoarthritis) of a randomized control trial compared supervised group interventions, 3 times/week for 12 weeks (36 sessions): (a) weight-bearing progressive resistive quadriceps exercise or (b) attention control. (1) From baseline, separate linear regressions were conducted with strength (Nm/kg) as the dependent, BMI as the predictor, and c-reactive protein, tumor necrosis factor, interleukin-6, cartilage transverse relaxation time or thickness as potential mediators. (2) Multiple linear regression analyses were completed with 12-week strength change (post-pre) as the dependent, change in serum inflammatory markers and cartilage measurements as predictors, and age, BMI and adherence as covariates. Findings (1) At baseline, there was no mediation. (2) A decrease in each of interleukin-6 (ß = -0.104 (95% confidence intervals: -0.172, -0.036), R2 = 0.51, P < 0.007) and tumor necrosis factor (ß = -0.024 (-0.038, -0.009), R2 = 0.54, P < 0.005) was associated with strength gains. Interpretation At baseline, inflammatory markers and cartilage measurements do not act as mediators of BMI on quadriceps strength. After 12 weeks of exercise, reduced interleukin-6 and tumor necrosis factor were associated with increased quadriceps strength in women with knee osteoarthritis.

Development and assessment of a verbal response scale for the Patient-Specific Functional Scale (PSFS) in a low-literacy, non-western population.

PURPOSE: The Patient-Specific Functional Scale (PSFS) is a routinely used measure of physical function with a 0-10 response scale. We aimed to develop verbal response options for the PSFS, pre-test it for use in a multilingual, low-literacy country- Nepal, and compare preference and error rates between numeric and verbal scale. We hypothesized that a verbal scale would be preferred by respondents and yield fewer errors. METHOD: We interviewed 42 individuals with musculoskeletal, neurological, and cardiopulmonary conditions to understand how people describe varying levels of physical ability. Transcripts were thematically analyzed, and through consensus, we developed two sets of verbal responses for the PSFS. Next, we pre-tested the scales on an additional 119 respondents following which participants were asked to specify their preferred scale. Error rates were analyzed retrospectively using pre-specified criteria. RESULTS: Participants described their ability in terms of the quality (95%) and the quantity of task performance (88%). Although the verbal scales were preferred over the numeric scale (50% versus 12%), there was no significant difference in error rates between numeric (34%) and verbal scales (32% and 36%). Higher error rates were associated with greater age, fewer years of education, and inexperience with numeric scales. CONCLUSION: Despite a higher preference for verbal scale, 1 out of 3 patients made errors in using the PSFS, even with an interview format. The error rates were higher among participants with low literacy. The findings raise questions about the utility of PROMs in countries with low literacy rates.

How to Optimize Measurement Protocols: An Example of Assessing Measurement Reliability Using Generalizability Theory.

Purpose: This article identifies how to assess multiple sources of measurement error and identify optimal measurement strategies for obtaining clinical outcomes. Method: Obtaining, interpreting, and using information gained from measurements is instrumental in physiotherapy. To be useful, measurements must have a sufficiently small measurement error. Traditional expressions of reliability include relative reliability in the form of an intra-class correlation coefficient and absolute reliability in the form of the standard error of measurement. Traditional metrics are limited to assessing one source of error; however, real-world measurements consist of many sources of error. The measurement framework generalizability theory (GT) allows researchers to partition measurement errors into multiple sources. GT further allows them to calculate the relative and absolute reliability of any measurement strategy, thereby allowing them to identify the optimal strategy. We provide a brief comparison of classical test theory and GT, followed by an overview of the terminology and methodology used in GT, and then an example showing how GT can be used to minimize error associated with measuring knee extension power. Conclusion: The methodology described provides tools for researchers and clinicians that enable detailed interpretation and understanding of the error associated with their measurements.

Objectif : décrire comment évaluer de multiples sources d'erreur de mesure et les stratégies de mesures optimales pour obtenir des résultats cliniques. Méthodologie : il est important d'obtenir, d'interpréter et d'utiliser l'information tirée des mesures en physiothérapie. Pour que ces mesures soient utiles, leur écart-type doit être suffisamment petit. Les expressions habituelles de fiabilité incluent la fiabilité relative sous forme de coefficient de corrélation intraclasse et la fiabilité absolue sous forme d'écart-type des mesures. Les mesures habituelles sont limitées à l'évaluation d'une source d'erreur. Cependant, les mesures réelles s'associent à plusieurs sources d'erreur. La théorie de généralisabilité (TG) du cadre de mesure permet aux chercheurs de diviser les erreurs de mesure selon de multiples sources. Elle leur permet également de calculer la fiabilité relative et absolue de toute stratégie de mesure, pour parvenir à une stratégie optimale. Le présent article fournit une brève comparaison entre la théorie du test classique et la TG, puis un aperçu de la terminologie et de la méthodologie utilisées en TG. Enfin, les auteurs présentent un exemple démontrant comment utiliser la TG pour limiter l'erreur associée à la mesure de la puissance d'extension du genou. Conclusion : la méthodologie décrite fournit des outils pour les chercheurs et les cliniciens afin de parvenir à une interprétation et une compréhension détaillées des erreurs de mesure.

Assessing Arm Volume in People During and After Treatment for Breast Cancer: Reliability and Convergent Validity of the LymphaTech System.

BACKGROUND: There are challenges related to the accurate and efficient measurement of lymphedema in people with breast cancer. The LymphaTech 3D Imaging System (LymphaTech, Atlanta, GA, USA) is a mobile, noninvasive platform that provides limb geometry measurements. OBJECTIVE: The objective of this study was to estimate the reliability and validity of the LymphaTech for measuring arm volume in the context of women seeking care in a specialty breast cancer rehabilitation clinic. DESIGN: This was a cross-sectional reliability and convergent validity study. METHODS: People who had stage I to IV breast cancer with lymphedema or were at risk for it were included. Arm volume was measured in 66 participants using the LymphaTech and perometer methods. Test-retest reliability for a single measure, limb volume difference, and agreement between methods was analyzed for 30 participants. A method-comparison analysis was also used to assess convergent validity between methods. RESULTS: Both LymphaTech and perometer methods displayed intraclass correlation coefficients (ICCs) of ≥0.99. The standard errors of measurement for the LymphaTech and length-matched perometer measurements were nearly identical. Similar intraclass correlation coefficients (0.97) and standard errors of measurement (38.0-40.7 mL) were obtained for the between-limb volume difference for both methods. The convergent validity analyses demonstrated no systematic difference between methods. LIMITATIONS: The sample size was not based on a formal sample size calculation. LymphaTech measurements included interrater variance, and perometer measurements contained intrarater variance. CONCLUSIONS: The LymphaTech had excellent test-retest reliability, and convergent validity was supported. This technology is efficient and portable and has a potential role in prospective surveillance and management of lymphedema in clinical, research, and home settings.

Characterizing the recovery trajectories of knee range of motion for one year after total knee replacement.

Design: Retrospective analysis of routinely collected clinical data. Objective: This study modeled the recovery in knee flexion and extension range of motion (ROM) over 1 year after total knee replacement (TKR). Background: Recovery after TKR has been characterized for self-reported pain and functional status. Literature describing target knee ROM at different follow-up periods after TKR is scarce. Methods: Data were extracted for patients who had undergone TKR at a tertiary care hospital at 2, 8, 12, 26, and 52 weeks after TKR. A linear mixed-effects growth model was constructed that investigated the following covariates age, sex, pre-TKR range, body mass index, duration of symptoms, and their interaction with weeks post TKR. Results: Of the 559 patients included (age 64.8 ± 8.5 years), 370 were women and 189 were men. Knee ROM showed the greatest change during the first 12 weeks after TKR, plateauing by 26 weeks. For an average patient, knee flexion increased from approximately 100º 2 weeks post TKR to 117º 52 weeks post TKR. Knee extension increased from approximately 3º knee flexion 2 weeks post TKR to 1º flexion 52 weeks post TKR. Conclusions: The results showed that the maximum gains in knee ROM should be expected within the first 12 weeks with small changes occurring up to 26 weeks after TKR. In addition, age and presurgery knee ROM are associated with the gains in knee ROM and should be factored into the estimation of expected knee ROM at a given follow-up interval after TKR.

Feasibility, Reliability, Responsiveness, and Validity of the Patient-Reported Functional Scale for the Intensive Care Unit: A Pilot Study.

BACKGROUND: Although many performance-based measures assess patients' physical function in intensive care unit (ICU) survivors, to our knowledge, there are no patient-reported ICU rehabilitation-specific measures assessing function. We developed the Patient-Reported Functional Scale-ICU (PRFS-ICU), which measures patients' perceptions of their ability to perform 6 activities (rolling, sitting edge of bed, sit-to-stand and bed-to-chair transfers, ambulation, and stair climbing). Each item is scored from 0 (unable) to 10 (able to perform at pre-ICU level) to a maximum of 60. OBJECTIVES: Estimate the feasibility, reliability, responsiveness, and validity of the PRFS-ICU. METHODS: This was a substudy of TryCYCLE, a single-center, prospective cohort examining the safety and feasibility of early in-bed cycling with mechanically ventilated patients (NCT01885442). To determine feasibility, we calculated the number of patients with at least 1 PRFS-ICU assessment during their hospital stay. To assess reliability, 2 raters blinded to each other's assessments administered the PRFS-ICU within 24-hours of each other. We calculated the intraclass correlation coefficient (ICC; 95% confidence interval [CI]), standard error of measurement (SEM, 95% CI), and minimal detectable change (MDC90). To assess validity, we estimated convergent validity of the PRFS-ICU with the Functional Status Score for ICU (FSS-ICU), Medical Research Council Sum Score (MRC-SS), Physical Function Test for ICU (PFIT-s), Katz Index of Independence in Activities of Daily Living (Katz ADLs), and a pooled index using Pearson's correlation coefficient (r, 95% CI). RESULTS: Feasibility: 20 patients completed a PRFS-ICU assessment. Reliability and responsiveness: 16 patients contributed data. The ICC, SEM, and MDC90 were 0.91 (0.76, 0.97), 4.75 (3.51, 7.35), and 11.04 points, respectively. Validity: 19 patients contributed data and correlations were (r [95% CI]): FSS-ICU (0.40 [-0.14, 0.76]), MRC-SS (0.51 [0.02, 0.80]), PFIT-s (0.43 [-0.13, 0.78]), Katz ADLs (0.53 [0.10, 0.79]), and pooled index (0.48 [-0.14, 0.82]). CONCLUSIONS: Our pilot work suggests the PRFS-ICU may be a useful tool to assess and monitor patients' perceptions of function over time.

Long-term Enrollment in Cardiac Rehabilitation Benefits Cardiorespiratory Fitness and Skeletal Muscle Strength in Men With Cardiovascular Disease.

BACKGROUND: Despite known associations between fitness and recurrent cardiovascular events, changes in cardiorespiratory fitness (CRF) and muscle strength with long-term cardiac rehabilitation (CR) have not been extensively examined. The objectives of this study were to (1) examine changes in CRF and muscle strength associated with long-term CR program enrollment in men, and (2) compare these changes to previously published rates of decline (2.0% per year for CRF and 2.36% per year for muscle strength in healthy age-matched individuals). METHODS: Data were extracted from the program charts of 160 men (64 ± 9 years) who were enrolled ≥ 1 year in a maintenance-phase CR program and who completed ≥ 2 exercise tests. CRF was represented by peak oxygen consumption (VO2peak, mL/min/kg). The skeletal muscle strength was assessed using 1-repetition maximum tests for chest press, seated row, and knee extension. Mixed model analyses with polynomial functions were used to determine changes in CRF (up to 5.5 years) and muscle strength (up to 10 years). RESULTS: CRF increased nonlinearly up to 3 years (range, 0.33%-3.23% per year) and then declined nonlinearly to the 5.5-year endpoint (range, 1.03%-2.59% per year). Chest press and seated row strength declined at < 1% per year over 10 years, whereas knee extension increased nonlinearly by 0.18%-1.40% per year from baseline until 4 years and then declined nonlinearly at 1.00%-3.58% per year until the 10-year endpoint. All declines were similar to literature rates. CONCLUSIONS: The results indicate that significant health benefits are associated with maintenance-phase CR programs for men. Enrollment was associated with preserved CRF and lower body muscle strength for 3-4 years.