To investigate the efficacy of two volumes of acute isometric wall squat exercise on pain sensitivity (primary outcome: pressure pain threshold (PPT)) and intensity (secondary outcome) in adults with knee osteoarthritis.

A parallel-group randomised controlled trial.

Outpatient physiotherapy clinics at hospitals in Saudi Arabia.

Participants (n = 90; mean (SD) age 49.0 (13.0) years) with chronic knee osteoarthritis, diagnosed by a specialist orthopaedic physician using radiographic evidence and clinical judgement, were recruited via two tertiary hospitals in Saudi Arabia.

Participants were stratified by sex and randomly allocated to one of three groups: isometric single-repetition wall-squat (ISO-SR; one repetition of a 3-min wall squat or to volitional fatigue at a 100° knee joint angle), isometric multiple-repetition wall-squat (ISO-MR; three repetitions of the same intervention) and control (quiet sitting for 7 min).

PPT was measured at the calf (primary site of interest), lumbar spine and forearm using a pressure algometer. Pain intensity was assessed using a visual analogue scale. Primary analyses compared changes between intervention and control groups. All participants were included in the ITT analysis.

The ISO-MR group had higher mean PPT ratings immediately postintervention in the calf (mean difference=9.4 (95% CI 5.6 to 13.2), p

Both the ISO-SR and ISO-MR exercises to volitional fatigue reduced pain sensitivity in patients with knee osteoarthritis. Neither exercise volume changed clinical pain intensity.

ClinicalTrials.gov registry (ID: NCT05605444).

Patients who survive admission to intensive care unit (ICU) for critical illness are at high risk of developing muscle atrophy and weakness, commonly diagnosed as ICU-acquired weakness (ICUAW). The development of ICUAW is closely linked to long-term symptoms and impairments known as post-intensive care syndrome (PICS). Despite heightened recognition of impairments, there is limited research supporting effective interventions to improve muscle and physical outcomes after hospital discharge. Prior to developing and testing interventions for ICU survivors, it is imperative to understand the trajectory of muscle and physical function recovery following an ICU stay. The purpose of this study is to longitudinally investigate skeletal muscle health and physical function outcomes after ICU admission.

This protocol describes a single site, prospective, observational study in adult patients who have survived a critical illness (ie, sepsis or acute respiratory failure). Patients will participate in a battery of testing including primary outcomes: muscle power and physical function; and secondary outcomes: muscle strength, muscle size, endurance and physical activity (by accelerometry) at hospital discharge and 3, 6, and 12 months post-discharge. A subset of patients will participate in muscle biopsy and venipuncture. To examine if the trajectory of recovery predicts primary outcomes, we will perform multivariate linear regression models in 150 evaluable patients. To examine differences in molecular and cellular outcomes in plasma and muscle tissue, a control group of community-dwelling adults without history of an ICU stay will be enrolled as a comparator group. Enrolment started on 18 October 2022 with an estimated completion date of 1 August 2027.

This protocol was approved by the University of Kentucky Office of Research Integrity Medical Internal Review Board (# 77407), with patients providing informed written consent. We anticipate our findings to establish recovery trajectories, improving the classification of patients who experience sustained physical disability. Improved identification of recovery trajectories of muscle and physical function enables future studies to employ an individually targeted rehabilitation approach, that is, precision medicine, with the goal of improving patient outcomes. The cellular findings will support the development of novel interventions specifically designed for detecting underlying mechanisms. We intend to disseminate findings to patients, healthcare professionals, the public and other relevant groups via conference presentations and manuscripts without publication restrictions.

NCT05537298.

Over 777 million COVID-19 infections have occurred globally, with data suggesting that 10%–20% of those infected develop Long COVID. Fatigue is one of the most common and disabling symptoms of Long COVID. We aim to assess the feasibility and safety of a new, remotely delivered, multimodal rehabilitation intervention, paced to prevent post-exertional malaise (PEM), to support the conduct of a future, definitive randomised trial.

We will conduct a randomised, two-arm feasibility trial (COVIDEx intervention vs usual care). Sixty participants with Long COVID will be recruited and randomised prior to giving informed consent under a modified Zelen design using 1:1 allocation with random permuted blocks via central randomisation to receive either the COVIDEx intervention or usual care. The 50-minute, remotely delivered, COVIDEx intervention will occur twice weekly for 8 weeks. All participants will wear a non-invasive device throughout their entire study participation, to track heart rate, blood oxygen saturation, steps, sleep and monitor PEM. The primary feasibility objectives will be recruitment rates, intervention fidelity, adherence, acceptability (intervention and design), retention, blinding success and outcome completeness. Secondary objectives will include refined estimates for the standard deviation and correlation between baseline and follow-up measurements of fatigue. Feasibility and clinical outcomes will be collected at baseline, 4, 8, 12 and 24 weeks. Qualitative interviews with participants and physiotherapists will explore intervention acceptability and barriers/facilitators.

Ethical approval for this study was obtained by the Western University Health Sciences Research Ethics Board (REB# 123902). Dissemination plans include sharing of trial findings at conferences and through open access publications and patient/community channels.

NCT06156176

Perineal trauma is one of the most common complications of childbirth, impacting approximately 9 out of 10 women who undergo a vaginal delivery. Perineal trauma is a public health issue leading to increased maternal morbidity and decreased quality of life. Although race is being studied as a potential risk factor and predictor of perineal trauma, other contributing factors like racism and social determinants of health have not been adequately studied in the same context. We set out to synthesise the available peer-reviewed evidence evaluating the prognostic association between race and perineal trauma.

This systematic review and meta-analysis adheres to the PRISMA-P (Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols) and PROGRESS (Prognosis Research Strategy) guidelines and is registered with PROSPERO. The review explores the association between racial status (non-Hispanic white vs non-white) and perineal birth trauma using the PECOTS (Population, Intervention/Exposure, Comparator, Outcome, Timing and Setting) framework. We will search PubMed, CINAHL, Web of Science and Embase. Peer-reviewed observational studies will be included. Data extraction and screening will be done in duplicate. Analyses will use random-effects models in R, reporting both unadjusted and adjusted risk differences. Risk of bias will be assessed using ROBINS-I (Risk of Bias in Non-randomised Studies of Interventions). Heterogeneity and certainty of evidence will be evaluated using I² and GRADE (Grading of Recommendations Assessment, Development and Evaluation), respectively.

This is a systematic review based on previously published data, and therefore ethical approval is not required. The findings of this review will be disseminated through publication in a peer-reviewed journal and presented at academic conferences.

CRD42025590093.

The number of people living with multiple long-term conditions (MLTCs or ‘multimorbidity’) is growing. Evidence indicates that exercise-based rehabilitation can improve health-related quality of life and reduce hospital admissions for a number of single long-term conditions. However, it is increasingly recognised that such condition-focused rehabilitation programmes do not meet the needs of people living with MLTCs. The aims for this study were to (1) evaluate the acceptability and feasibility of the newly developed Personalised Exercise Rehabilitation FOR people with Multiple long-term conditions (PERFORM) intervention; (2) assess the feasibility of study methods to inform progression to a definitive randomised controlled trial (RCT) and (3) refine our intervention programme theory.

Semi-structured qualitative interviews were conducted with patients receiving and healthcare practitioners delivering the PERFORM intervention, to seek their experiences of the intervention and taking part in the study. Interviews were analysed thematically, informed by Normalisation Process Theory and the programme theory.

Three UK sites (two acute hospital settings, one community-based healthcare setting).

18 of the 60 PERFORM participants and 6 healthcare professionals were interviewed.

The intervention consisted of 8 weeks of supervised group-based exercise rehabilitation and structured self-care symptom-based support.

All participants and staff interviewed found PERFORM useful for physical and mental well-being and noted positive impacts of participation, although some specific modifications to the intervention delivery and training and study methods were identified. Scheduling, staffing and space limitations were barriers that must be considered for future evaluation and implementation. Key intervention mechanisms identified were social support, patient education, building routines and habits, as well as support from healthcare professionals.

We found the PERFORM intervention to be acceptable and feasible, with the potential to improve the health and well-being of people with MLTCs. The findings of the process evaluation inform the future delivery of the PERFORM intervention and the design of our planned full RCT. A definitive trial is needed to assess the clinical and cost-effectiveness.

ISRCTN68786622.

Existing exercise-based rehabilitation services, such as cardiac and pulmonary rehabilitation, are traditionally commissioned around single long-term conditions (LTCs) and therefore may not meet the complex needs of adults with multiple long-term conditions (MLTCs) or multimorbidity. The aim of this study was to assess the feasibility and acceptability of the newly developed personalised exercise-rehabilitation programme for people with multiple long-term conditions (PERFORM) and the trial methods.

A parallel two-group mixed-methods feasibility randomised controlled trial (RCT) with embedded process and economic evaluation.

Three UK sites (two acute hospital settings, one community-based healthcare setting).

60 adults with MLTCs (defined as the presence of ≥2 LTCs) with at least one known to benefit from exercise therapy were randomised 2:1 to PERFORM intervention plus usual care (PERFORM group) or usual care alone (control group).

The intervention consisted of 8 weeks of supervised group-based exercise rehabilitation and structured self-care symptom-based support.

Primary feasibility outcomes included: trial recruitment (percentage of a target of 60 participants recruited within 4.5 months), retention (percentage of participants with complete EuroQol data at 3 months) and intervention adherence (percentage of intervention group attending ≥60% sessions). Other feasibility measures included completion of outcome measures at baseline (pre-randomisation), 3 months post-randomisation (including patient-reported outcomes, exercise capacity and collection of health and social care resource use) and intervention fidelity.

Target recruitment (40 PERFORM group, 20 control group) was met within the timeframe. Participants were 57% women with a mean (SD) age of 62 (13) years, body mass index of 30.8 (8.0) kg/m² and a median of 4 LTCs (most common: diabetes (41.7%), hypertension (38.3%), asthma (36.7%) and a painful condition (35.0%)). We achieved EuroQol outcome retention of 76.7% (95% CI: 65.9% to 87.1%; 46/60 participants) and intervention adherence of 72.5% (95% CI: 56.3% to 84.4%; 29/40 participants). Data completion for attendees was over 90% for 11/18 outcome measures.

Our findings support the feasibility and rationale for delivering the PERFORM comprehensive self-management and exercise-based rehabilitation intervention for people living with MLTCs and progression to a full multicentre RCT to formally assess clinical effectiveness and cost-effectiveness.

ISRCTN68786622.

Increasing physical activity and effectively managing stress can positively impact immunity and may reduce the duration of respiratory tract infections (RTIs). As part of a larger trial, participants accessed a digital behavioural change intervention that encouraged physical activity and stress management to reduce RTIs. We aimed to understand the barriers and facilitators to engaging in physical activity and stress reduction.

A qualitative process analysis from semistructured interviews of the behavioural intervention in a randomised control trial.

Primary care in the UK.

34 participants (aged 18–82 years) in the behavioural intervention arm.

The larger trial involved four interventions: a gel-based antiviral nasal spray; a saline water-based nasal spray; a behavioural intervention; usual care. In this study, we focused on participants allocated to the behavioural intervention. The behavioural intervention included two components: one to increase physical activity (getting active) and another for stress management techniques (healthy paths) to reduce RTIs.

We analysed the interviews using thematic analysis with a critical realist perspective (focusing on). We developed five themes: digital intervention engagement, views on intervention allocation, the role of getting active, the role of healthy paths and benefits reinforcing behaviour. Participants’ views on the relevance and benefit of the behavioural intervention shaped their engagement with the intervention website and behaviour. Facilitators of intervention engagement included awareness of inactivity, goal setting, increasing immunity, positive outcome expectations and benefits from changing behaviour. Barriers to engagement included negative outcome expectations, such as around efficacy of the behaviours.

Overall, the results highlighted the importance of positive expectations for a digital intervention promoting physical activity and stress management for RTI reduction. Future interventions should consider how to clearly communicate a broad range of perceived benefits to users.

The trial was prospectively registered with International Standard Randomized Controlled Trial Number (ISRCTN) registry (17936080).

To identify the minimum effective dose of a multi-behaviour change technique (BCT) intervention to increase physical activity among individuals on primary statin therapy using the time-to-event continual reassessment method (TiTE-CRM).

A large New York metropolitan area healthcare system comprising approximately 85 000 employees and 5.5 million patient encounters annually.

42 participants enrolled in 13 cohorts of 3 participants, 1 cohort of 2 participants and 1 cohort of 1 participant. The sample was composed of 16.7% individuals aged 66 and older (n=7), 64.3% women (n=27), 69.0% white individuals (n=29) and 7.1% Hispanic individuals (n=3).

A variable-duration, four-BCT text message intervention and a 2-week follow-up. Dose assignment relied on TiTE-CRM to adjust the duration of the intervention based on adherence of participants in prior cohorts. Five mechanisms of action (MoAs) were assessed: self-efficacy, intrinsic regulation, discrepancy in behaviour, motivation and barriers to activity.

The primary outcome measure was the proportion of participants who achieved a 2000 step/day increase between baseline and follow-up. The secondary outcomes were within-participant changes in daily steps (examined as a continuous variable at the daily level) and potential MoAs for increased physical activity.

Of the 40 participants who completed follow-up, 7 (17.5%) achieved the goal of 2000 or more steps per day during their follow-up period. Though participants did increase the number of steps they walked during the intervention (B(SE)=373.1 (154.7) steps; p=0.016), there was no association between increased intervention duration and increased daily average steps. The intervention was also associated with increases in self-efficacy (p=0.002), intrinsic regulation (p=0.037), discrepancy in behaviour (p

The results of this trial did not show a traditional dose-response curve to increasing the length of a multicomponent BCT intervention. Results did show that the intervention successfully increased steps during the intervention period and that the benefit of the intervention dwindled during follow-up. Further, potential MoAs for the intervention were confirmed.

NCT05273723.

Around 75 000 people suffer from hip fractures yearly in the United Kingdom (UK) leading to significant mortality and morbidity. Although mortality has dropped from 8% to 5% between 2013 and 2023 after hip fractures, those undergoing surgery for hip fractures have a 30-day readmission rate which has remained stagnant at around 11% over the same decade in the UK.

This study protocol describes a mixed-methods investigation (The ARTHUR Study—avoiding readmission after hip fracture) which aims to understand and offer solutions to prevent avoidable 30-day readmission after hip fracture surgery. The study will focus on two hospitals in acute and community settings in a large urban and ethnically diverse city in the UK.

We describe two work packages.

Work Package One (WP1) involves analysis of 5 year’s worth of routinely collected health data provided by PIONEER, a Health Data Research UK data hub in Acute Care for our local population. Work Package Two (WP2) will involve semistructured interviews with patients, carers or family members as well as non-participant observations of hospital processes to understand systems-based issues related to readmissions after hip fracture surgery. Although recruitment may be an issue, our timeline for recruitment reflects this. We also aim to recruit a diverse population, which has often been under-represented in studies into hip fractures and aim to explore relevant interventions which can be widely generalisable.

This protocol was submitted via IRAS: 330074 and obtained UK NHS REC approval via the West Midlands Coventry and Warwickshire Research Ethics Committee (REC 23/WM/0242) on 25 January 2024. The results of this study will be published in relevant scientific journals and presented at orthopaedic, fragility fracture and geriatric specialty conferences and scientific meetings. A lay summary of the findings will be publicly available on the HRA website.