Cardiorespiratory Fitness Benefits of High-Intensity Interval Training After Stroke: A Randomized Controlled Trial.

BACKGROUND: Limited evidence supports the effects of short-interval high-intensity interval training (HIIT) for improving cardiorespiratory fitness (V̇O2peak) after stroke. We aimed to compare the effects of 12 weeks of short-interval HIIT versus moderate-intensity continuous training (MICT) on V̇O2peak, cardiovascular risk factors, and mobility outcomes among individuals ≥6 months poststroke. METHODS: This study was a multi-site, 12-week randomized controlled trial (NCT03614585) with an 8-week follow-up. Participants were randomized into 3 d/wk of HIIT (10×1 minute 80%-100% heart rate reserve interspersed with 1 minute 30% heart rate reserve [19 minutes]) or MICT (20-30 minutes 40%-60% heart rate reserve). Secondary outcomes of the trial, including V̇O2peak, cardiovascular risk factors (carotid-femoral pulse wave velocity, blood pressure, and waist-hip ratio), and mobility (6-minute walk test, 10 m gait speed), were reported. Linear mixed model analyses with a group×study time point interaction evaluated between-group differences. RESULTS: Of the 305 potential participants, 82 consented (mean [SD] age 64.9 [9.3] years, 32 females [39%], 1.8 [1.2] years poststroke) and were randomized to HIIT (n=42, mean [SD] baseline V̇O2peak 17.3 [5.9] mL/kg·min) or MICT (n=40, mean [SD] baseline V̇O2peak 17.2 [6.0] mL/kg·min). Participants attended 82% of visits (n=2417/2952). No adverse events occurred during the study period. A significant group×study time point interaction was found (χ2=8.46; P=0.015) for V̇O2peak at 12 weeks (mean difference, 1.81 [95% CI, 0.58-3.04]; P=0.004) whereby the HIIT group had greater gains in V̇O2peak (∆3.52 mL/kg·min [95% CI, 2.47-4.57]; P<0.001) compared with the MICT group (∆1.71 mL/kg·min [95% CI, 0.55-2.86]; P=0.001). There was no between-group difference in V̇O2peak (mean difference, 1.08 [95% CI, -0.26 to 2.42]; P=0.11) at 8-week follow-up. No group×study time point interactions were found for cardiovascular risk factors or mobility outcomes. CONCLUSIONS: Short-interval HIIT may be an effective alternative to MICT for improving V̇O2peak at 12 weeks postintervention. REGISTRATION: URL: https://clinicaltrials.gov; Unique identifier: NCT03614585.

Predictors of Success in a Graduate, Entry-Level Professional Program: From Admissions to Graduation.

INTRODUCTION: Admission to health professional programs (HPPs) in Canada is competitive. The purpose of this study is to evaluate how factors identifiable by the admissions package may predict incidences of academic concerns in one physiotherapy program in Canada. REVIEW OF LITERATURE: Previous literature has identified many concepts that contribute to "academic success." Some HPPs have investigated if admissions criteria can predict students' academic performance. However, this has not been reported in physiotherapy programs in Canada. SUBJECTS: Study data included candidates' admissions' metrics and physiotherapy students' program data for 4 graduating cohorts, who were admitted from 2016 to 2019 inclusive (N = 256). METHODS: A retrospective, nonconcurrent cohort study was used to estimate the relationship between applicant's admissions data and students' program data pertaining to academic success. Data were summarized as frequencies for categorical variables and means for continuous variables. We calculated odds ratios (ORs) and probabilities of an academic or professional concern for standard scores. Significance was set at P < .05. RESULTS: Cohorts participating in the multiple mini-interview (MMI) had an academic concern incidence of 14/131. The virtual MMI (VMMI) cohort had an incidence of 7/125. Students with higher MMI scores were less likely to have an academic concern (OR = 0.52 [95% CI: 0.30-0.89, P = .017]). Grade point average was not significantly associated with an academic concern when combined with either MMI or VMMI (Ps > 0.05). Admissions round offer was also significantly associated with an academic concern (OR = 2.48 [95% CI: 1.00-6.12, P = .049]), with those beyond the initial round of offers having increased risk of concerns. DISCUSSION AND CONCLUSION: Results of the study reflect the generally low event rates for incidences of academic concerns and the relative homogeneity and range restriction of independent variables across the 4 cohorts of students. HPP's reflection on current admissions processes and ability to identify opportunities for change in admission processes helps ensure that programs are selecting candidates who are likely to succeed.

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.

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.

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.