Cognitive Behavioral Therapy for Insomnia Improves Sleep Outcomes in Individuals With Concussion: A Preliminary Randomized Wait-List Control Study.

OBJECTIVE: Cognitive behavioral therapy for insomnia (CBT-I) is the gold standard treatment for insomnia, but there is limited evidence on the treatment effect of CBT-I in individuals after a concussion. Therefore, the main purpose of this study was to evaluate the treatment effect of CBT-I on sleep outcomes and postconcussion symptoms. SETTING: This study was conducted at an academic institution. The CBT-I sessions were conducted using a teleconferencing system (Zoom). PARTICIPANTS: Participants were eligible to participate if they were at least 4 weeks post- concussion, aged 18 to 64 years, and scored 10 or more on the Insomnia Severity Index. A total of 40 people were enrolled; 32 participants were included in analyses. DESIGN: This was a randomized controlled wait-list study. Participants were randomized into starting the CBT-I intervention immediately after the baseline assessment or into the wait-list group for 6 weeks before starting CBT-I. Assessments were performed at baseline, 6, 12, and 18 weeks. MAIN MEASURES: The primary outcome was the Insomnia Severity Index. Secondary measures included the Pittsburg Sleep Quality Index, Post-Concussion Symptom Scale, and Beck Depression and Anxiety Inventories. Statistical analyses included a repeated-measures analysis of variance, t tests, and mixed linear regression modeling. RESULTS: There was a group-by-time interaction for the sleep outcomes but not for the concussion or mood outcomes. Differences were seen between groups on sleep outcomes, symptom severity, and depression. The treatment effect was maintained following CBT-I for all outcomes. Improvement in sleep outcomes was predictive of improvement in postconcussion symptom severity and number of symptoms. CONCLUSIONS: CBT-I reduces insomnia in individuals with concussions, and improved sleep was associated with lower postconcussion and mood symptoms. These effects were maintained 6 to 12 weeks following the intervention.

Assessing Cognitive Behavioral Therapy for Insomnia to Improve Sleep Outcomes in Individuals With a Concussion: Protocol for a Delayed Randomized Controlled Trial.

BACKGROUND: Sleep disturbances post concussion have been associated with more frequent and severe concussion symptoms and may contribute to poorer recovery. Cognitive behavioral therapy for insomnia (CBT-I) is an effective treatment for insomnia; however, it remains unclear if this treatment method is effective in improving sleep outcomes and reducing concomitant postconcussion symptoms. OBJECTIVE: The hypotheses for this study are that (1) CBT-I will improve sleep outcomes and (2) CBT-I will improve concomitant postconcussion symptoms. METHODS: In total, 40 individuals who are within ≥4 weeks of postconcussion injury and have insomnia symptoms will be enrolled in this randomized controlled trial. Participants will be randomized into either a group that starts a 6-week CBT-I program immediately after baseline or a waitlist control group that starts CBT-I following a 6-week waiting period. All participants will be reassessed 6, 12, and 18 weeks after baseline. Standardized assessments measuring sleep outcomes, postconcussion symptoms, and mood will be used. Linear regression and t tests will be used for statistical analyses. RESULTS: Enrollment of 40 participants was completed July 2022, data collection will be completed in November 2022, and publication of main findings is anticipated in May 2023. It is anticipated that participants experience reduced insomnia symptoms and postconcussion symptoms following CBT-I and these improvements will be retained for at least 12 weeks. Additionally, we expect to observe a positive correlation between sleep and postconcussion symptom improvement. CONCLUSIONS: Successful completion of this pilot study will allow for a better understanding of the treatment of insomnia and postconcussion symptoms in individuals following a concussion. TRIAL REGISTRATION: ClinicalTrials.gov NCT04885205; https://clinicaltrials.gov/ct2/show/NCT04885205. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/38608.

Interventions to Address the Needs of Adults With Postconcussion Syndrome: A Systematic Review.

Postconcussion syndrome (PCS) affects physical, cognitive, and emotional functioning. Existing reviews of interventions to address PCS are limited to psychological and rehabilitation interventions and to child and adolescent populations. We conducted a systematic review integrating current evidence about interventions for adults with PCS. The inclusion criteria were intervention studies of adults (ages ≥18 yr) with PCS that evaluated recovery from PCS symptoms and focused on functional outcomes; 10 studies met the criteria. Included studies demonstrated medium to high levels of evidence and investigated psychotherapy, counseling, social support, self-management strategies, individualized rehabilitation, hyperbaric oxygen interventions, and group-based cognitive-behavioral therapy. Outcomes included reduced postconcussion symptoms, improved cognitive function, enhanced quality of life, and increased community integration. The evidence supports psychotherapy, counseling, and social support interventions as being beneficial for cognitive and emotional functions in adults with PCS.

Reliability and validity of a motion-based reaction time assessment using a mobile device.

Information processing speed is often altered following a concussion. Few portable assessments exist to evaluate simple reaction time (SRT) in hospitals and clinics. We evaluated the use of a SRT application for mobile device measurement. 27 healthy adults (age = 30.7 ± 11.5 years) completed SRT tests using a mobile device with Sway, an application for SRT testing. Participants completed computerized SRT tests using the Computerized Test of Information Processing (CTIP). Test-retest reliability was assessed using intraclass correlation coefficients (ICC) between Sway trials. Pearson correlations and Bland-Altman analyses were used to assess criterion validity between Sway and CTIP means. ICC comparisons between Sway tests were all statistically significant. ICCs ranged from 0.84-0.90, with p-values <.001. A one-way analysis of variance (ANOVA) revealed no significant differences between trials (F3,104 = 1.35, p = .26. Pearson correlation between Sway and CTIP outcomes yielded a significant correlation (r = 0.59, p = .001). The mean difference between measurement methods was 43.7 ms, with limits of agreement between -140.8-53.4 ms. High ICC indicates Sway is a reliable method to assess SRT. A strong correlation and clinically acceptable agreement between Sway and the computer-based test indicates that Sway is suited for rapid administration of SRT testing in healthy individuals. Future research using Sway to assess altered information processing in a population of individuals after concussion is warranted.

Self-perceived occupational performance of community-dwelling adults living with stroke.

BACKGROUND.: Stroke has long-term consequences for functional performance of daily activities. Evaluating client-perceived occupational performance provides insight for designing stroke-specific programs supporting home and community participation. PURPOSE.: This study describes the personal characteristics and self-perceived occupational performance in community-dwelling adults with stroke. METHOD.: A retrospective chart review was undertaken of 25 stroke survivors who sought services at a community-based centre. The outcome measures were the Canadian Occupational Performance Measure (COPM) to evaluate self-perceived occupational performance and the Montreal Cognitive Assessment (MoCA) to screen for cognitive impairment. The analysis used descriptive statistics. FINDINGS.: Mean participant age was 64 years, and most participants were Caucasian males (72%). The mean cognitive function score was 22.1 on MoCA, and the mean COPM performance and satisfaction subscores were 4.1 and 3.9, respectively. The top three challenging daily activities were driving, seeking employment, and functional mobility. IMPLICATIONS.: Stroke-specific community programs should emphasize the diverse performance concerns important to stroke survivors.

Mouse Behavior Tracker: An economical method for tracking behavior in home cages.

Analysis of mouse behavior often requires expensive equipment and transfer of the mice to new test environments, which could trigger confounding behavior alterations. Here, we describe a system for tracking mouse behavior in home cages using a low-cost USB webcam and free software (Fiji and wrMTrck). We demonstrate the effectiveness of this method by tracking differences in distance traveled, speed, and movement tracks between wild-type mice and amyotrophic lateral sclerosis (ALS) model mice (SOD1G93A).

Spousal Caregiver Perspectives on a Person-Centered Social Program for Partners With Dementia.

This qualitative study explored spousal caregiver perspectives on the experience and impact of a person-centered social program for partners with dementia. Interviews with 5 caregivers and the spouses with dementia were conducted 7 to 8 months after the program ended to explore the sustained impact of the program. Interpretative phenomenological analysis was used to support in-depth exploration of interviews. Three themes emerged including benefits of the program for caregivers, initial expectations and later perspectives of caregivers about the program, and conflicting values and perspectives between caregivers and the spouses. These findings suggest participation in a person-centered social program by people with dementia benefits their caregivers, by meeting the caregivers' desire for their spouses to increase social participation and engagement in meaningful activities. Participation in the program provided a sustained benefit to one couple in particular, by encouraging the caregiver to resume arranging activities the couple once enjoyed but now had difficulty pursuing.

Perspectives of People with Dementia About Meaningful Activities: A Synthesis.

Qualitative studies were synthesized to describe perspectives of people with dementia regarding meaningful activities. Themes of connectedness were identified using a meta-ethnography approach. The theme of being connected with self encompasses engagement for continuity, health promotion, and personal time. The theme of being connected with others includes being with others not to feel alone, doing an activity with others, and meaningful relationships. The theme of being connected with the environment encompasses being connected to one's familiar environment, community, and nature. This synthesis suggests that connectedness is an important motivation for engagement in daily activities. Findings indicate that identifying the underlying motivation for an individual with dementia to engage in different activities is important for matching a person with activities that will be satisfying. This review may inform the development of interventions for engaging people with dementia in meaningful, daily activities and creating connectedness to self, others, and the environment.

Inpatient rehabilitation outcomes of patients with apraxia after stroke.

BACKGROUND: Stroke-induced paresis commands much attention during rehabilitation; other stroke-related consequences receive less consideration. Apraxia is a stroke disorder that may have important implications for rehabilitation and recovery. OBJECTIVE: To investigate association of apraxia with stroke rehabilitation outcomes during inpatient rehabilitation. METHODS: This cohort study compared patients with and without apraxia after a first left hemispheric stroke. All study patients received standard of care. Clinical measures were the Functional Independence Measure (FIM) and the upper extremity section of the Fugl-Meyer Assessment (FMA) administered upon admission and at discharge. Length of stay was also documented. Florida Apraxia Battery subtests were used to classify patients with apraxia. RESULTS: Fifteen patients were included in this study, 10 of whom had apraxia. Data analysis revealed that patients with apraxia exhibited improvement from admission to discharge in clinical measures; however, admission FIM score was significantly lower compared to patients without apraxia. There was no statistically significant difference between groups on FMA score, length of stay, or amount of change on clinical measures. CONCLUSIONS: This study of acute patients found those with apraxia to be significantly less independent upon admission to inpatient rehabilitation compared to patients without apraxia. Although both groups improved a similar amount during rehabilitation, patients with apraxia discharged at a level of independence comparable to patients without apraxia upon admission. Such disparity in independence is of concern, and apraxia as a factor in stroke rehabilitation and recovery deserves further attention.

Hyperbaric oxygen improves engraftment of ex-vivo expanded and gene transduced human CD34⁺ cells in a murine model of umbilical cord blood transplantation.

Delayed engraftment and graft failure represent major obstacles to successful umbilical cord blood (UCB) transplantation. Herein, we evaluated the use of hyperbaric oxygen (HBO) therapy as an intervention to improve human UCB stem/progenitor cell engraftment in an immune deficient mouse model. Six- to eight-week old NSG mice were sublethally irradiated 24 hours prior to CD34⁺ UCB cell transplant. Irradiated mice were separated into a non-HBO group (where mice remained under normoxic conditions) and the HBO group (where mice received 2 hours of HBO therapy; 100% oxygen at 2.5 atmospheres absolute). Four hours after completing HBO therapy, both groups intravenously received CD34⁺ UCB cells that were transduced with a lentivirus carrying luciferase gene and expanded for in vivo imaging. Mice were imaged and then sacrificed at one of 10 times up to 4.5 months post-transplant. HBO treated mice demonstrated significantly improved bone marrow, peripheral blood, and spleen retention and subsequent engraftment. In addition, HBO significantly improved peripheral, spleen and bone marrow engraftment of human myeloid and B-cell subsets. In vivo imaging demonstrated that HBO mice had significantly higher ventral and dorsal bioluminescence values. These studies suggest that HBO treatment of NSG mice prior to UCB CD34⁺ cell infusion significantly improves engraftment.

Honokiol inhibits pathological retinal neovascularization in oxygen-induced retinopathy mouse model.

Aberrant activation of the hypoxia inducible factor (HIF) pathway is the underlying cause of retinal neovascularization, one of the most common causes of blindness worldwide. The HIF pathway also plays critical roles during tumor angiogenesis and cancer stem cell transformation. We have recently shown that honokiol is a potent inhibitor of the HIF pathway in a number of cancer and retinal pigment epithelial cell lines. Here we evaluate the safety and efficacy of honokiol, digoxin, and doxorubicin, three recently identified HIF inhibitors from natural sources. Our studies show that honokiol has a better safety to efficacy profile as a HIF inhibitor than digoxin and doxorubicin. Further, we show for the first time that daily intraperitoneal injection of honokiol starting at postnatal day (P) 12 in an oxygen-induced retinopathy (OIR) mouse model significantly reduced retinal neovascularization at P17. Administration of honokiol also prevents the oxygen-induced central retinal vaso-obliteration, characteristic feature of the OIR model. Additionally, honokiol enhanced physiological revascularization of the retinal vascular plexuses. Since honokiol suppresses multiple pathways activated by HIF, in addition to the VEGF signaling, it may provide advantages over current treatments utilizing specific VEGF antagonists for ocular neovascular diseases and cancers.

Employer perceptions of stress and resilience intervention.

OBJECTIVE: To understand employers' perceived organizational strengths in addressing stress and resilience-building to help expand theoretical knowledge and guide interventions. METHODS: Interviews and discussion groups with 46 employer representatives using grounded theory methodology for sampling and analysis of narrative data. RESULTS: Participants detailed three levels of approaches: (1) preventing stress/building resilience; (2) providing information, resources, and benefits to employees; and (3) intervening actively with troubled employees. Preventing stress through trusting work relationships and trust in stability of organizational structures emerged as a core concept explaining effectiveness of these approaches. Results are discussed using positive organizational scholarship, systems, and well-being frameworks. CONCLUSIONS: Psychosocial distress has unfavorable effects on human health and work performance. Greater attention to the systemic development and maintenance of trust in workplace relationships and systems is suggested.

A survey of evidence-based practise among Dutch occupational therapists.

This study explored how the evidenced-based practise (EBP) is perceived by Dutch occupational therapists (OTs), what sources of research data are used to make clinical decisions, and what barriers are identified in implementing EBP. A self-administered, pre-tested, questionnaire was distributed through an email survey and postal mail among the 200 randomly stratified selected OTs out of a total population of 2,019 Dutch OTs. Analyses of data comprised descriptive statistics of all variables and test statistics to evaluate the differences between demographical groups. Dutch OTs have a very positive attitude toward the EBP. Barriers experienced are mostly related to a lack of skills needed to implement the EBP and to the characteristics of the work environment. The attitude, experiences and barriers are mainly similar to research findings in other countries or professions. A unique barrier to the implementation of the EBP found in this study was that Dutch OTs perceived evidence written in a foreign (non-Dutch) language as a barrier to using evidence in non-Dutch languages. The results of the study, derived from a partly representative group of working OTs, implicate universal problems regarding the effective implementation of the EBP. Solutions to increase the implementation of the EBP from an international point of view are called for and need to be evaluated.

The genetic control of avascular area in mouse oxygen-induced retinopathy.

PURPOSE: The C57BL/6ByJ and BALB/cByJ inbred strains of mice are, respectively, susceptible and resistant to oxygen-induced retinopathy (OIR). The purpose of this work was to investigate the genetic control of the retinal avascular area in mouse OIR using a mapping cross. METHODS: The central retinal avascular area was measured on postnatal day 16 (P16) in C57BL/6ByJ, BALB/cByJ, 101 (C57BL/6ByJ x BALB/cByJ)F2, and 116 (BALB/cByJ x C57BL/6ByJ)F2 mice that had been subjected to the OIR protocol. A genome-wide scan was performed of selected albino and non-albino mice to determine quantitative trait loci associated with weight and avascular area. RESULTS: C57BL/6ByJ mice had significantly larger avascular areas than BALB/cByJ ones. Albino mice of the F2 generation had smaller avascular areas than the non-albino mice. Genotyping was performed at 856 informative single nucleotide polymorphisms approximately evenly distributed across the genome from each of 85 selected F2 mice. Weight, sex, and the paternal grandmother were found to act as additive covariates associated with the avascular area on P16; mapping analyses that used a model incorporating these covariates found a quantitative trait locus on chromosome 7 related to avascular area. Mapping analyses that used a model that did not incorporate covariates found a quantitative trait locus on chromosome 9 related to avascular area. A quantitative trait locus for bodyweight on P16 was mapped to chromosome 5. CONCLUSIONS: The retinal avascular area in the mouse OIR model is under genetic control. Revascularization in OIR is related to the weight, strain of paternal grandmother, sex, and albinism. Our data support the existence of a quantitative trait locus on chromosome 5 that influences weight after exposure to hyperoxia, as well as quantitative trait loci on chromosomes 7 and 9 that modify susceptibility to OIR.

Improved function after combined physical and mental practice after stroke: a case of hemiparesis and apraxia.

This study describes change in functional performance and self-perception after participation in combined training with physical practice followed by mental practice. The patient was a 44-yr-old white man who experienced a single left ischemic stroke 7 mo before enrollment in the study. He engaged in physical and mental practice of two functional tasks: (1) reaching for and grasping a cup and (2) turning pages in a book with the more-affected arm. Practice took place 3 times per week during 60-min sessions for 6 consecutive wk. Primary outcome measures were the Arm Motor Ability Test (AMAT) and the Canadian Occupational Performance Measure (COPM). An abbreviated version of the Florida Apraxia Battery gesture-to-verbal command test approximated severity of ideomotor apraxia. After intervention, the patient demonstrated increased functional performance (AMAT) and self-perception of performance (COPM) despite persistent ideomotor apraxia. The results of this single-case report indicate functional benefit from traditional rehabilitation techniques despite comorbid, persisting ideomotor apraxia.