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"Callaghan, Patrick"
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The effect of exercise on resilience, its mediators and moderators, in a general population during the UK COVID-19 pandemic in 2020: a cross-sectional online study
by
Callaghan, Patrick
,
Lancaster, Molly Rose
in
Biostatistics
,
Communicable Disease Control
,
Coronaviruses
2022
Background
Resilience is central to positive mental health and well-being especially when faced with adverse events. Factors such as exercise, location, sleep, mental health, and personality are moderators and mediators of resilience. However, the impact of these factors on resilience during severe adverse events are unknown. The present study examined how the COVID-19 pandemic affected resilience and its moderators and mediators by investigating whether there was a difference in resilience and quality of life between people with varying levels of exercise, including those who changed their exercise levels pre and during a COVID-19-related lockdown, and whether location affected the relationship between levels of exercise and resilience and quality of life.
Methods
Following ethical approval, a cross-sectional online survey capturing data on self-reported key moderators and mediators of resilience before and during the COVID-19 lockdown imposed on the 23rd March 2020 in the UK was distributed via social media and completed over a three week time period during July 2020 via a self-selecting sample of the general population (
N
= 85). The key moderators and mediators of resilience the survey assessed were exercise, location, life-orientation, mental health, and sleep quality. All data were self-reported.
Results
Participants’ exercise intensity level increased as resilience increased (F(2,82) = 4.22,
p
= .003: Wilks’ lambda = .82, partial n
2
= 0.09). The relationship between exercise, and resilience and quality of life was independent of sleep and mental health status pre-lockdown (
p
= .013,
p
= .027 respectively). In the face of the COVID-19 pandemic, this relationship was dependent on mental health but not sleep quality (
p
= <.001 for resilience
p
= .010 for quality of life). There were no statistically significant differences between participants living in urban or rural locations.
Conclusion
Exercise is strongly correlated to resilience and during a pandemic such as COVID-19 it becomes a mechanism in which to moderate resilience. The relationship between exercise and resilience is supported by this study. The influence that a pandemic had on mental health is mediated by its effect on quality of life.
Journal Article
Retinoic acid improves baseline barrier function and attenuates TNF-α-induced barrier leak in human bronchial epithelial cell culture model, 16HBE 14o
by
Ferrick, Bryan
,
Callaghan, Patrick J.
,
Mullin, James M.
in
Anti-Inflammatory Agents - pharmacology
,
Antiviral agents
,
Antiviral drugs
2020
Retinoic acid (RA) has been shown to improve epithelial and endothelial barrier function and development and even suppress damage inflicted by inflammation on these barriers through regulating immune cell activity. This paper thus sought to determine whether RA could improve baseline barrier function and attenuate TNF-α-induced barrier leak in the human bronchial epithelial cell culture model, 16HBE14o- (16HBE). We show for the first time that RA increases baseline barrier function of these cell layers indicated by an 89% increase in transepithelial electrical resistance (TER) and 22% decrease in 14 C-mannitol flux. A simultaneous, RA-induced 70% increase in claudin-4 attests to RA affecting the tight junctional (TJ) complex itself. RA was also effective in alleviating TNF-α-induced 16HBE barrier leak, attenuating 60% of the TNF-α-induced leak to 14 C-mannitol and 80% of the leak to 14 C-inulin. Interleukin-6-induced barrier leak was also reduced by RA. Treatment of 16HBE cell layers with TNF-α resulted in dramatic decrease in immunostaining for occludin and claudin-4, as well as a downward “band-shift” in occludin Western immunoblots. The presence of RA partially reversed TNF-α’s effects on these select TJ proteins. Lastly, RA completely abrogated the TNF-α-induced increase in ERK-1,2 phosphorylation without significantly decreasing the TNF-driven increase in total ERK-1,2. This study suggests RA could be effective as a prophylactic agent in minimizing airway barrier leak and as a therapeutic in preventing leak triggered by inflammatory cascades. Given the growing literature suggesting a “cytokine storm” may be related to COVID-19 morbidity, RA may be a useful adjuvant for use with anti-viral therapies.
Journal Article
A qualitative exploration into the experience of mindfulness in moderate-severe persistent depression
by
Morriss, Richard
,
Sweeney, Timothy
,
Callaghan, Patrick
in
Adult
,
Biology and Life Sciences
,
Care and treatment
2025
Depression is a common and growing mental health problem, with around 5% of the world’s population experiencing an episode of depression during their lifetime. Relapse rates are high, with around half experiencing more than one depressive episode and a further 10–20% experiencing a chronic and persistent depression. Mindfulness has been incorporated into treatments for depression and several studies have explored the impact of mindfulness training on depressive symptomatology and recurrence. However, to date no studies have looked at the changing relationship between mindfulness and depression in those naïve to mindfulness training. 20 participants with moderate-to-severe persistent depression were interviewed to explore their experience of mindfulness in the context of low mood. Thematic analysis captured six themes highlighting changes in mindfulness relating to the onset of depression. Themes included: behavioural withdrawal; perceptual detachment from one’s experience; intentional reduction in awareness; increased self-criticism; mind racing; impaired cognitive performance. Thematic analysis suggested that mindfulness reduces in the context of moderate-to-severe persistent depression. This appears to occur indirectly as the consequence of depression-related processes, e.g., rumination and experiential avoidance, but also arises as a deliberately instigated self-protective strategy. However, findings seemed to indicate that reduced mindfulness maintains and intensifies depressive experience. Despite growing evidence of the value of mindfulness approaches for those with more chronic and severe depression, study findings suggest that introducing mindfulness to this population may be particularly challenging due to the intensity of symptomatology potentially obstructing access to a mindful perspective. Findings bear important implications for the treatment of depression and can inform future intervention development and delivery.
Journal Article
Circumglobal Response to Prescribed Soil Moisture over North America
by
Teng, Haiyan
,
Tawfik, Ahmed B.
,
Branstator, Grant
in
Anomalies
,
Atmosphere
,
Atmosphere-land interaction
2019
A series of idealized prescribed soil moisture experiments is performed with the atmosphere/land stand-alone configuration of the Community Earth System Model, version 1, in an effort to find sources of predictability for high-impact stationary wave anomalies observed in recent boreal summers. We arbitrarily prescribe soil water to have a zero value at selected domains in the continental United States and run 100-member ensembles to examine the monthly and seasonal mean response. Contrary to the lack of a substantial response in the boreal winter, the summertime circulation response is robust, consistent, and circumglobal. While the stationary wave response over the North America and North Atlantic sectors can be well explained by the reaction of a linear dynamical system to heating anomalies caused by the imposed dry land surface, nonlinear processes involving synoptic eddies play a crucial role in forming the remote response in Eurasia and the North Pacific Ocean. A number of other possible factors contributing to the circulation responses are also discussed. Overall, the experiments suggest that, in the boreal summer, soil moisture may contribute to the predictability of high-impact stationary wave events, which can impact regions that are great distances from these source regions.
Journal Article
The Downward Influence of Uncertainty in the Northern Hemisphere Stratospheric Polar Vortex Response to Climate Change
by
Hitchcock, Peter
,
Simpson, Isla R
,
Seager, Richard
in
Climate change
,
Climate models
,
Computer simulation
2018
General circulation models display a wide range of future predicted changes in the Northern Hemisphere winter stratospheric polar vortex. The downward influence of this stratospheric uncertainty on the troposphere has previously been inferred from regression analyses across models and is thought to contribute to model spread in tropospheric circulation change. Here we complement such regression analyses with idealized experiments using one model where different changes in the zonal-mean stratospheric polar vortex are artificially imposed to mimic the extreme ends of polar vortex change simulated by models from phase 5 of the Coupled Model Intercomparison Project (CMIP5). The influence of the stratospheric vortex change on the tropospheric circulation in these experiments is quantitatively in agreement with the inferred downward influence from across-model regressions, indicating that such regressions depict a true downward influence of stratospheric vortex change on the troposphere below. With a relative weakening of the polar vortex comes a relative increase in Arctic sea level pressure (SLP), a decrease in zonal wind over the North Atlantic, drying over northern Europe, and wetting over southern Europe. The contribution of stratospheric vortex change to intermodel spread in these quantities is assessed in the CMIP5 models. The spread, as given by 4 times the across-model standard deviation, is reduced by roughly 10% on regressing out the contribution from stratospheric vortex change, while the difference between models on extreme ends of the distribution in terms of their stratospheric vortex change can reach up to 50% of the overall model spread for Arctic SLP and 20% of the overall spread in European precipitation.
Journal Article
Retinoic acid improves baseline barrier function and attenuates TNF-alpha-induced barrier leak in human bronchial epithelial cell culture model, 16HBE 14o
by
Ferrick, Bryan
,
Callaghan, Patrick J
,
Rybakovsky, Elizabeth
in
Bronchi
,
Epithelial cells
,
Health aspects
2020
Retinoic acid (RA) has been shown to improve epithelial and endothelial barrier function and development and even suppress damage inflicted by inflammation on these barriers through regulating immune cell activity. This paper thus sought to determine whether RA could improve baseline barrier function and attenuate TNF-[alpha]-induced barrier leak in the human bronchial epithelial cell culture model, 16HBE14o- (16HBE). We show for the first time that RA increases baseline barrier function of these cell layers indicated by an 89% increase in transepithelial electrical resistance (TER) and 22% decrease in .sup.14 C-mannitol flux. A simultaneous, RA-induced 70% increase in claudin-4 attests to RA affecting the tight junctional (TJ) complex itself. RA was also effective in alleviating TNF-[alpha]-induced 16HBE barrier leak, attenuating 60% of the TNF-[alpha]-induced leak to .sup.14 C-mannitol and 80% of the leak to .sup.14 C-inulin. Interleukin-6-induced barrier leak was also reduced by RA. Treatment of 16HBE cell layers with TNF-[alpha] resulted in dramatic decrease in immunostaining for occludin and claudin-4, as well as a downward \"band-shift\" in occludin Western immunoblots. The presence of RA partially reversed TNF-[alpha]'s effects on these select TJ proteins. Lastly, RA completely abrogated the TNF-[alpha]-induced increase in ERK-1,2 phosphorylation without significantly decreasing the TNF-driven increase in total ERK-1,2. This study suggests RA could be effective as a prophylactic agent in minimizing airway barrier leak and as a therapeutic in preventing leak triggered by inflammatory cascades. Given the growing literature suggesting a \"cytokine storm\" may be related to COVID-19 morbidity, RA may be a useful adjuvant for use with anti-viral therapies.
Journal Article
Embedding shared decision-making in the care of patients with severe and enduring mental health problems: The EQUIP pragmatic cluster randomised trial
2018
Severe mental illness is a major driver of worldwide disease burden. Shared decision-making is critical for high quality care, and can enhance patient satisfaction and outcomes. However, it has not been translated into routine practice. This reflects a lack of evidence on the best way to implement shared decision-making, and the challenges of implementation in routine settings with limited resources. Our aim was to test whether we could deliver a practical and feasible intervention in routine community mental health services to embed shared decision-making for patients with severe mental illness, by improving patient and carer involvement in care planning.
We cluster randomised community mental health teams to the training intervention or usual care, to avoid contamination. Training was co-delivered to a total of 350 staff in 18 teams by clinical academics, working alongside patients and carers. The primary outcome was the Health Care Climate Questionnaire, a self-report measure of 'autonomy support'. Primary and secondary outcomes were collected by self-report, six months after allocation.
In total, 604 patients and 90 carers were recruited to main trial cohort. Retention at six months was 82% (n = 497). In the main analysis, results showed no statistically significant difference in the primary outcome between the intervention and usual care at 6 months (adjusted mean difference -0.064, 95% CI -0.343 to 0.215, p = 0.654). We found significant effects on only 1 secondary outcome.
An intervention to embed shared decision-making in routine practice by improving involvement in care planning was well attended and acceptable to staff, but had no significant effects on patient outcomes. Enhancing shared decision-making may require considerably greater investment of resources and effects may only be apparent over the longer term.
Journal Article
Evaluating and Quantifying User and Carer Involvement in Mental Health Care Planning (EQUIP): Co-Development of a New Patient-Reported Outcome Measure
by
Gibbons, Chris
,
Callaghan, Patrick
,
Bee, Penny
in
Advisory groups
,
Amyotrophic lateral sclerosis
,
Analysis
2016
International and national health policy seeks to increase service user and carer involvement in mental health care planning, but suitable user-centred tools to assess the success of these initiatives are not yet available. The current study describes the development of a new reliable and valid, interval-scaled service-user and carer reported outcome measure for quantifying user/carer involvement in mental health care planning. Psychometric development reduced a 70-item item bank to a short form questionnaire using a combination of Classical Test, Mokken and Rasch Analyses. Test-retest reliability was calculated using t-tests of interval level scores between baseline and 2-4 week follow-up. Items were worded to be relevant to both service users and carers. Nine items were removed following cognitive debriefing with a service user and carer advisory group. An iterative process of item removal reduced the remaining 61 items to a final 14-item scale. The final scale has acceptable scalability (Ho = .69), reliability (alpha = .92), fit to the Rasch model (χ2(70) = 97.25, p = .02), and no differential item functioning or locally dependent items. Scores remained stable over the 4 week follow-up period, indicating good test-retest reliability. The 'Evaluating the Quality of User and Carer Involvement in Care Planning (EQUIP)' scale displays excellent psychometric properties and is capable of unidimensional linear measurement. The scale is short, user and carer-centred and will be of direct benefit to clinicians, services, auditors and researchers wishing to quantify levels of user and carer involvement in care planning.
Journal Article
A pragmatic randomised controlled trial of preferred intensity exercise in depressed adult women in the United Kingdom: secondary analysis of individual variability of depression
2019
Background
This study is a secondary analysis of the trial by Callaghan et al. (2011), which reported higher antidepressant effects for preferred intensity (
n
= 19) vs. prescribed intensity (
n
= 19) exercise of three sessions/week over four weeks in depressed women. In particular, the present study sought to examine whether greater clinically significant individual change/recovery was observed in the preferred compared to the prescribed exercise group.
Methods
The reliable change index and the C
cutoff
score criteria described by Jacobson and Truax (1991) were employed to determine clinical significance. These criteria examined if individual change in depression scores from pre- to post-intervention in the preferred intensity group were statistically significant beyond the standard error of difference derived from the active comparator prescribed group, and subsequently within a normal population range. Patients fulfilling the first or both criteria were classified as improved or recovered, respectively.
Results
Post-intervention depression scores of six patients in the preferred intensity exercise group (32%) demonstrated statistically reliable improvement (
p
< 0.05) and recovery. Half of this subgroup started as moderately depressed. No patient demonstrated a reliable deterioration in depression. Due to a small sample size, it was impossible to determine whether patients on psychiatric medication or medication-free patients were equally benefited from preferred intensity exercise. Thirteen patients in the preferred intensity group (68%) displayed non-statistically significant change in post-intervention depression scores (
p
> 0.05), although eight of them showed a non-significant improvement in post-intervention depression scores and three could not technically show an improvement in depression due to floor effects (baseline depression within normal range).
Conclusions
Preferred intensity exercise of three sessions/week over four weeks led almost a third of the patients to record scores consistent with recovery from depression. Health professionals may consider that short-term preferred intensity exercise provides clinically significant antidepressant effects comparing favourably to exercise on prescription.
Journal Article
Pragmatic randomised controlled trial of preferred intensity exercise in women living with depression
by
Khalil, Elizabeth
,
Morres, Ioannis
,
Callaghan, Patrick
in
Aged
,
Biostatistics
,
Care and treatment
2011
Background
Exercise may be effective in treating depression, but trials testing its effect in depressed women are rare.
Aim
To compare the effect of exercise of preferred intensity with exercise of prescribed intensity in thirty-eight women living with depression.
Methods
A Pragmatic RCT of 12 sessions of exercise at preferred intensity compared with 12 sessions at prescribed intensity. Beck Depression Inventory (BDI), Rosenberg Self Esteem Scale (RSES), General Health Questionnaire 12 (GHQ-12), heart rate (HR), Rating of Perceived Exertion Scale (RPE), Quality of Life in Depression Scale (QLDS), Multi-Dimensional Scale of Perceived Social Support (MDSPSS), SF12 Health Survey and exercise participation rates were compared between groups.
Results
Intervention participants had statistically better BDI (
t
= 2.638, df = 36,
p
= 0.006, 95% mean (SD) 26.5 (10.7), CI-20.4 to -2.7,
d
= 0.86), GHQ-12 (
t
= 3.284, df = 36,
p
= 0.001, mean (SD) 8.3 (3.7) 95% CI -6.5 to -1.5, d = 1.08), RSES (
t
= 2.045, df = 36,
p
= 0.024, mean (SD) 11.3 (5.8), 95% CI 0.3 -6.4, d = 0.25), QLDS (
t
= 1.902, df = 36,
p
= 0.0325, mean (SD) 15.5 (7.9), 95% CI -12.2 -0.4, d = 0.27) RPE scores (
t
= 1.755, df = 36,
p
= 0.0475, mean (SD) 9.2 (3.2), 95% CI -.5 - 5.2, d = 0.77) and attended more exercise sessions (t = 1.781, df = 36, p = 0.0415, number of sessions 8 (65%), 95% CI-0.3 -4.8, d = 0.58). SF-12, MSPSS and HR did not differ significantly between groups.
Conclusions
Exercise of preferred intensity improves psychological, physiological and social outcomes, and exercise participation rates in women living with depression.
Trial Registration
ClinicalTrials.gov:
NCT00546221
Journal Article