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To evaluate the relationship between time spent in sedentary behaviour and physical activity and sarcopenia in older adults, and to analyse the effect of reallocating time between different intensities of activities on sarcopenia.
Systematic review and meta-analysis.
Following PRISMA guidelines, data were synthesised using a random-effects model, with heterogeneity assessed via Cochran's Q test and the I 2 statistic. Study quality was evaluated using the Newcastle–Ottawa Scale by two independent reviewers.
A comprehensive search was conducted in PubMed, Web of Science, Embase, CINAHL and Cochrane databases for studies published up to November 5, 2024, with no language or date restrictions. Relevant reference lists were also manually screened.
The present review included six studies involving 9914 older adults. Three studies suggested that older adults without sarcopenia spent more time performing light physical activities (SMD: 0.35; 95% CI: 0.24–0.45) and moderate to vigorous physical activity (SMD: 0.61; 95% CI: 0.49–0.74) and had less sedentary behaviour (SMD: −0.34; 95% CI: −0.51 to −0.16) than did older adults with sarcopenia. Replacing sedentary behaviour with an equivalent amount of moderate to vigorous physical activity (10, 30, or 60 min) each day can reduce the risk of sarcopenia, with 30 min showing the best preventive effect. However, research findings on the relationship between substituting sedentary behaviour time with light physical activities and sarcopenia are inconsistent.
Encouraging older adults to engage in moderate to vigorous physical activity, even in short bouts of 10 min, can significantly reduce the risk of sarcopenia. Healthcare professionals should tailor activity recommendations to individual preferences and physical conditions to promote overall health and reduce sedentary behaviour.
No Patient or Public Contribution.
CRD42023416166
Concussion symptoms following a traumatic accident are both common and known to adversely affect mental health and recovery in patients with traumatic brain injury. Depression, highly prevalent among patients with traumatic brain injury, is also associated with the important factors of sleep quality and resilience. However, the mediator and moderator roles of depression following concussion in patients with traumatic brain injury have been underexplored. The aims of this study were to investigate the mediating role of sleep quality in the relation between concussion symptoms and depression and to examine the moderating effect of resilience on this mediated model.
Cross-sectional pretest data analysis of a randomized controlled trial.
A total of 249 adult patients with mild traumatic brain injury (Glasgow Coma Scale 13–15) at admission following brain injury were surveyed at a medical center in Taipei, Taiwan. The outcome variables were concussion symptoms (Rivermead Post-Concussion Symptom Questionnaire), sleep quality (Pittsburgh Sleep Quality Index), resilience (Resilience Scale for Adults), and depression (Beck Depression Inventory II). These data were analyzed using moderated mediation regressions with the SPSS PROCESS macro.
In patients with mild traumatic brain injury, there was a significant positive relation between concussion symptoms and depression, of which sleep quality was a significant mediator. Additionally, resilience had a negative moderating effect on the relations between sleep quality and depression. Patients with less resilience showed a stronger negative effect of sleep quality on depression.
Our findings suggest that ameliorating both concussion symptoms and sleep disturbance is important for reducing the risk of depression in patients with mild traumatic brain injury, especially in those patients with less resilience.
It is essential for clinical nurses to develop interventions for patients with mild traumatic brain injury that will improve their sleep quality, while strengthening their resilience, to alleviate depression.
Nurses increasingly use mindfulness as an effective mental health intervention to reduce psychological distress. The effectiveness of mindfulness-based interventions remains inconclusive, which may lead to implementation of interventions in an inefficient or ineffective manner. This study aimed to examine the effects of mindfulness-based interventions on reducing stress, anxiety, and depression among nurses.
Systematic review and meta-analysis.
Randomized controlled trials (RCTs) were searched using six databases published through May 20, 2023, which evaluated the effects of mindfulness-based interventions on reducing psychological distress among nurses. To assess the quality of methodology included in the RCTs, version 2 of the Cochrane risk-of-bias instrument for RCTs with five domains was used. Standardized mean difference (SMD) with 95% confidence interval (CI) were calculated using the random–effects model in the meta-analyses. Publication bias was assessed using Egger's regression test. Further, the robustness effect size of the pooled analysis was assessed using leave-one-out sensitivity analysis.
A total of 16 RCTs were included in the final analysis. Overall, the modalities appeared to alleviate stress (pooled SMD: −0.50 [95% CI: −0.82 to −0.18]; p < 0.001) and depression (pooled SMD: −0.42 [95% CI: −0.78 to −0.06]; p = 0.02) among nurses.
Mindfulness-based interventions appear to alleviate stress and depression in nurses. Future research evaluating mindfulness-based interventions among working nurses with more rigorous methodological and larger sample size.
Support for nurses' mental health must be included while implementing personal and professional development plans.
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