Abstract
Background: The rigorous demands associated with caring for critically ill patients place intensive care unit (ICU) nurses at a heightened risk for mental health issues.
Aim: This study investigated the individual and combined benefits of two distinct intervention strategies, resilience training and yoga training, on enhancing the mental health of ICU nurses.
Setting: Hospitals located in Bitlis Province, Turkey.
Methods: A sample of 84 participants was chosen and randomly and equally allocated to resilience, yoga, resilience+yoga or the control group. Resilience or yoga training comprised eight sessions, each lasting 45 min. Participants in the combined group completed both resilience and yoga training. Data analysis was conducted using an analysis of variance test.
Results: Engagement in either resilience or yoga training alone led to a significant decrease in depression, anxiety and stress levels (p < 0.05). Finally, the resilience + yoga training had additive benefits and resulted in a significantly greater reduction in depression, anxiety and stress levels compared to the individual resilience or yoga training (p < 0.05).
Conclusion: Intensive care unit nurses should engage in both resilience and yoga training to reap the associated physical and psychological benefits.
Contribution: This study sheds light on the value of the resilience and yoga combination for the mental health of ICU nurses.
Keywords: nurse; ICU; resilience; yoga; mental health.
Introduction
Intensive care units (ICUs) are vital to modern healthcare, providing specialised care for patients with life-threatening conditions.1,2 However, the psychological well-being of ICU nurses is a growing concern, with significant rates of anxiety and depression reported globally. In Australia, these issues affect 41.2% and 32.4% of nurses.3 A study conducted in Geneva found that 46% of ICU nurses show symptoms of these mental health issues,4 and in Saudi Arabia, prevalence rates range from 36.5% to 78.1%.5 A recent meta-analysis indicated that 23.2% of ICU nurses suffer from anxiety and 22.8% from depression,6 while in Turkey, the rates are 26.2% and 39.8%, respectively.7 The impact of these mental health challenges can lead to severe consequences, including burnout, physical health issues, decreased job satisfaction, increased absenteeism and detrimental effects on patient care.8,9 Hence, it is crucial to identify the factors that contribute to the alleviation of these disorders and, in turn, enhance the mental health of nursing staff.
Research indicates that various psychological interventions, including relaxation techniques, music therapy and massage, effectively alleviate stress and anxiety.10,11,12 There is also a rising interest in cognitive behavioural interventions that take a preventive approach within occupational health. Among the various coping strategies, the cultivation of resilience skills is particularly noteworthy for managing stress effectively.13,14,15 The concept of resilience has gained traction among nursing professionals, who define it as the ability to transform adversity into opportunities for personal development and growth.16,17,18 Resilience among nurses is recognised as a vital skill that empowers them to navigate and overcome challenges in their work environment. This ability involves adapting to, balancing and managing adverse conditions while seeking effective solutions to various obstacles. By fostering resilience, nurses can mitigate the detrimental impacts of stress, such as burnout, thereby enhancing their overall well-being and supporting both their physical and mental health. Research has indicated a significant inverse relationship between resilience and stress levels among nurses.19,20 Hence, nurses may utilise resilience to effectively manage various psychological pressures and environmental stressors. Thus, the primary objective of this study was to examine the impact of resilience training on the mental health of ICU nurses, specifically focusing on its effects in reducing stress, depression and anxiety.
In addition, yoga has been extensively researched and highlighted by scientists as an effective method for achieving mental relaxation and managing stress through both internal and external mechanisms.21 This practice serves as a dual-purpose approach, functioning as both a preventive measure and a means of recovery. As one of the oldest known systems of physical and mental discipline, yoga offers a variety of exercises designed to help individuals effectively navigate and mitigate stress. Furthermore, the practice of yoga not only promotes physical fitness but also facilitates emotional equilibrium, boosts self-esteem, cultivates a positive body and social image and encourages relaxation while reinforcing affirmative thoughts.22,23,24 Research has demonstrated that yoga can reduce anxiety and improve overall well-being and psychological characteristics such as coherence, resilience and cognitive flexibility,25,26 particularly among nurses.27,28 Consequently, yoga presents itself as a valuable educational approach for mental health, merging physical activity with mindfulness practices. However, there is a notable lack of research examining its effects on the mental health of ICU nurses, prompting this study to evaluate the effectiveness of yoga training in addressing mental health challenges, specifically stress, depression and anxiety.
As mentioned above, this research investigated the impact of two distinct intervention strategies – resilience training and yoga training – on enhancing the mental health of ICU nurses. However, an intriguing question arises: Does the combination of these approaches result in a ‘doubling’ of the benefits for mental health, or do they merely represent distinct methods of influencing a shared mental health mediator without providing any supplementary value to each other’s impact? Research has investigated the effects of combined interventions that integrate physical exercise with psychotherapeutic methods, particularly resilience training based on cognitive-behavioural therapy. A review by Remskar et al.29 indicated that these combined approaches yielded better clinical outcomes for mental health and well-being compared to physical exercise interventions alone. Additionally, a meta-analysis focusing on adults with chronic illnesses revealed that interventions merging physical exercise with cognitive-behavioural therapy led to moderate improvements in depression, anxiety and fatigue.30 However, the evidence for the additive benefits of using resilience and yoga together, as opposed to employing either one independently, remains limited. Hence, recognising the potential advantages of integrating resilience and yoga training methods, the study also explored the effects of a combined approach of resilience and yoga training on the mental health of ICU nurses.
Research methods and design
Setting
This study was performed in Bitlis Province, Turkey, in the year 2024.
Design
This study employed a quasi-experimental design characterised by a pretest, post-test and follow-up design alongside a control group. The investigation focused on assessing the impact of two independent variables – resilience training and yoga training – individually or in combination, on the dependent variable of mental health. The implementation process comprised several key steps: (1) random assignment of participants, (2) execution of a pre-test to gather initial data, (3) application of the independent variables to the experimental groups, (4) performance of a post-test to collect subsequent data and (5) execution of a follow-up test. This investigation was carried out under the principles outlined in the Declaration of Helsinki and received approval from the University Ethics Committee (Code: IR.IAU.TNB.REC.1401.059). Ethical protocols were strictly followed, including the acquisition of necessary permissions, obtaining informed consent from the participating nurses and conveying the study’s aims and methodologies. Participants were assured of the confidentiality of the research findings before the commencement of data collection.
Participants and sampling
The study population comprised all nurses working in the ICU of hospitals located in Bitlis Province, Turkey, in the year 2024. In this research, the study sample was recruited with the collaboration of the hospital director and nursing matron, following the university’s approval for the study. A sample of 84 participants was chosen using a purposive sampling method and randomly allocated to either the experimental groups (Resilience, Yoga, Combined) or the control group, with each group consisting of 21 participants. A power analysis performed with G*Power revealed that a minimum sample size of 15 participants per group was required, based on an alpha level of 0.05 and a power of 0.80. All nurses involved in the study completed it without any withdrawals. The inclusion criteria for participation in the study required that individuals: (1) be employed in an ICU, (2) exhibit a willingness to participate, (3) have no documented health concerns, (4) give informed consent to take part in the research, (5) not have previously engaged in stress management or resilience training programmes, (6) possess a minimum of 3 years of professional experience and (7) hold at least a bachelor’s degree. Conversely, individuals who did not complete the intervention protocol or the questionnaire, along with those who opted out of continuing their participation in the research, were excluded from the study.
Measure
Mental health
The Depression, Anxiety and Stress Scale-21 (DASS-21), created by Lovibond in 1995,31 serves as a tool for assessing levels of depression, anxiety and stress. This instrument is structured into three subscales, each containing seven items dedicated to measuring depression, anxiety and stress. The overall score for each subscale is calculated by aggregating the scores of the relevant items. Respondents evaluate each item on a scale ranging from zero (not applicable to me at all) to three (extremely applicable to me). Specifically, items 21, 17, 16, 13, 10, 5 and 3 are associated with depression; items 20, 19, 15, 9, 7, 4 and 2 pertain to anxiety and items 18, 14, 12, 11, 8 and 6 are linked to stress.23 Once multiplied by 2, the scoring for each subscale can vary from zero to 42, with higher scores indicating greater levels of distress experienced by the individual. In the context of this research, the Cronbach’s alpha coefficients for the depression, anxiety and stress subscales were found to be 0.92, 0.90 and 0.93, respectively.
Data collection
Following collaboration with the hospitals, separate meetings were held for each participant group, during which the researcher clarified the study’s objectives and protocols. On the same day, participants signed consent forms to confirm their willingness to take part in the study and completed demographic and mental health questionnaires as a pretest. Those in the experimental groups received detailed information about the training sessions and the specific content relevant to their groups. The intervention commenced 1 week after this introductory meeting. Throughout the study, participants could communicate with the researcher via telephone, email and social media. One week after the training concluded, all participants completed the mental health questionnaire again as a post-test. A follow-up assessment was conducted 1 month later, during which participants filled out the DASS-21 once more. It is noteworthy that the control group did not participate in any training. Finally, no adverse effects were reported in any of the groups involved in the study.
Intervention
Resilience training
Resilience training comprised eight sessions, each lasting 45 min, and was conducted by a professional psychologist. It comprised workshops, question-and-answer sessions and hands-on activities, which were conducted over two separate sessions to enhance attendance among shift nurses. Various educational resources such as films, slides, brochures and handouts were utilised throughout the sessions. Each session maintained consistent methodology and quality, featuring two workshops per week that integrated both theoretical and practical elements focused on developing resilience skills (see Table 1). This material was derived from reputable sources in nursing management and relevant scholarly articles.13,14
| TABLE 1: Content of resilience training. |
Yoga training
Yoga sessions were conducted over eight sessions, each lasting 45 min, led by a qualified yoga instructor. It was conducted over two separate sessions to enhance attendance among shift nurses. The programme commenced with basic exercises, progressively advancing in complexity as participants became proficient in the movements. The instructor initially focused on teaching correct posture, breath regulation and proper alignment. Throughout the sessions, participants engaged in a variety of activities, including deep breathing techniques, upper body stretches, balance exercises, physical postures (Asanas), breathing practices (Pranayama), relaxation techniques (Shavasana) and meditation. Each week, new and more challenging exercises were introduced alongside the previous week’s routines, culminating in a comprehensive practice by the final week. Additionally, the programme incorporated a review of exercises from earlier weeks to reinforce learning and skill development.
Combined training
Participants in the combined group, which engaged in both resilience training and yoga, completed a total of eight sessions. Each session was structured to last 90 min, comprising 45 min dedicated to resilience training followed by 45 min of yoga. The resilience and yoga exercises conducted were identical to those performed in the individual groups.
Control group
The control group did not receive any intervention initially. However, upon the conclusion of the study, they were provided with an educational package that included materials focused on resilience and yoga.
Statistical analysis
Data analysis was performed using IBM SPSS Statistics version 27. Descriptive statistics, including frequency, percentage, mean and standard deviation (s.d.), were employed to analyse the distribution of socio-demographic variables within the study sample. In addition, inferential statistics such as the chi-square test and independent t test were employed to analyse gender differences in demographic data. In addition, to compare the pretest scores across different groups, analysis of variance (ANOVA) was utilised. Furthermore, a 4 (GROUP: Resilience, Yoga, Combined and Control) × 3 (TIME: Pretest, Post-test and Follow-up) ANOVA with repeated measures on the last factor was applied to assess the differences between pretest, post-test and follow-up scores among the groups. Finally, Least Significant Difference (LSD) was used as a post-hoc test. A significance level of 0.05 was set for the analyses.
Ethical considerations
This investigation was carried out under the principles outlined in the Declaration of Helsinki. Ethical clearance to conduct this study was obtained from the Islamic Azad University Research Ethics Committee (No. IR.IAU.TNB.REC.1401.059). Ethical protocols were strictly followed, including the acquisition of necessary permissions, obtaining informed consent from the participating nurses and conveying the study’s aims and methodologies. Participants were assured of the confidentiality of the research findings before the commencement of data collection.
Results
Demographic characteristics
Table 2 presents the demographic characteristics of the study sample. Among the 84 participants (mean age = 32.90 years), there were 64 women and 20 men. The age group with the greatest representation was those aged between 28 and 35 years, while the lowest representation was found in the 40- to 45-year age bracket. Regarding marital status, the findings revealed that 38% of participants were single, 58% were married and the remainder were either divorced or widowed. An analysis of the participants’ work experience as a nurse showed that 30% had between 5 and 10 years of experience, whereas 70% had more than 10 years. The average duration of work experience as an ICU nurse was 3.84 years. Furthermore, it was noted that 50% of the participants had children. Lastly, the average body mass index (BMI) of the participants was recorded at 24.67 kg/m2.
| TABLE 2: Demographic characteristics of the study sample. |
Baseline mental health
Table 3 presents the mean and SD for depression, anxiety and stress levels among nurses categorised by groups. The findings indicate that the mean depression score was 21.35, reflecting a severe degree of depressive symptoms. A significant majority of nurses, specifically 73.8%, reported experiencing moderate to severe depressive symptoms. This pattern was consistently observed across all four groups. Furthermore, the average anxiety score recorded was 16.95, which also points to a severe level of anxiety. In this case, 65.3% of nurses reported moderate to severe anxiety symptoms, with a similar trend evident across the four groups. Lastly, the stress data indicated an average score of 24.47, suggesting a moderate level of stress. Here, 52.5% of nurses reported moderate stress symptoms, again showing comparable results across the groups. Overall, the study’s findings revealed no significant differences among the groups in the pretest, indicating that the mental health status was largely similar across all groups (p > 0.05).
Effects of different interventions on mental health
Depression
The data presented in Table 4 summarise the outcomes of the comparative analysis of depression scores recorded during the study stages across various groups. The results reveal a statistically significant impact attributed to GROUP (F = 10.527, p < 0.001). Here, the results of multiple comparisons indicate that the combined resilience and yoga training led to a significantly greater enhancement in depression scores when contrasted with the separate resilience or yoga training interventions (p < 0.05). Additionally, participation in either resilience or yoga training alone was linked to a significant reduction in depression levels (p < 0.05). Notably, no significant differences were observed between the individual resilience and yoga training groups (p = 0.974).
| TABLE 4: Results of repeated measures analysis of variance for depression. |
Anxiety
The information contained in Table 5 summarises the results from the comparative analysis of anxiety scores obtained during the study stages across various groups. The results reveal a statistically significant impact for GROUP (F = 5.715, p < 0.001). Here, the results of multiple comparisons indicate that the combination of resilience and yoga training led to a significantly greater decrease in anxiety scores when compared to those who underwent either resilience training or yoga training alone (p < 0.05). In addition, participation in either resilience or yoga training independently was linked to a significant reduction in anxiety levels (p < 0.05). Notably, no significant differences were found between the individual resilience training and yoga training groups (p = 0.968).
| TABLE 5: Results of repeated measures analysis of variance for anxiety. |
Stress
The data contained in Table 6 summarise the findings from the comparative analysis of stress scores collected during the study stages across different groups. The analysis demonstrates a statistically significant effect for GROUP (F = 7.056, p < 0.001). Here, the results of multiple comparisons indicate that the integration of resilience and yoga training resulted in a significantly greater decrease in stress scores compared to those who participated in either resilience training or yoga training alone (p < 0.05). Moreover, participation in either resilience training or yoga practice was linked to a significant decrease in stress levels (p < 0.05). Importantly, no significant differences were found between the individual resilience training and yoga training groups (p = 0.906).
| TABLE 6: Results of repeated measures analysis of variance for stress. |
Discussion
This study investigated individual and combined benefits of two distinct intervention strategies – resilience training and yoga training – on enhancing the mental health of ICU nurses. The preliminary results reveal that most of the ICU nurses involved in this study exhibited moderate to severe symptoms of depression, anxiety and stress before participating in the interventions. These outcomes are consistent with earlier research and imply that employment as an ICU nurse may lead to significant psychological distress.5,6,7,8,9
In terms of individual benefits, the findings of this research indicated that participation in a resilience training programme resulted in enhanced mental health among ICU nurses, with these benefits persisting for a minimum of 1 month following the completion of the training. The findings align with recent studies13,14,15,16 and suggest that resilience training has a beneficial effect on the mental health of ICU nurses. To interpret these findings, it can be stated that resilience training can be understood as a mechanism that fosters a belief in one’s capabilities and cultivates an optimistic outlook on life.14 It serves as a foundational element that assists individuals in bridging the gap between their inherent strengths and their limitations.13 Through supportive encouragement, individuals gain insight into their core values and recognise their strengths and resources. Consequently, individuals exhibiting high resilience tend to demonstrate greater behavioural flexibility and establish more effective interpersonal relationships.15 Furthermore, resilience training equips individuals with the tools to cultivate resilience within themselves, thereby protecting their mental health and overall well-being from stress and other detrimental influences.14,32,33 Accordingly, engagement in resilience group training sessions facilitated ICU nurses in acknowledging their challenges, such as anxiety, depression and stress and rationally addressing them. In addition, research findings indicate that resilience training may lead to a decrease in cortisol levels, a biomarker associated with stress responses.34 Thus, resilience training emerges as a vital strategy within positive psychology, particularly for ICU nurses, as it can significantly enhance mental health by bolstering internal resistance and mitigating the adverse effects of depression, anxiety and stress while potentially preventing future physical and psychological disorders.
Furthermore, the findings of this research indicated that participation in a yoga training programme resulted in enhanced mental health among ICU nurses, with these benefits persisting for a minimum of 1 month following the completion of the training. The findings align with recent studies24,25,26,27 and suggest that yoga training has a beneficial effect on the mental health of ICU nurses. To interpret these findings, it can be stated that yoga has been demonstrated to effectively alleviate pain, illness and chronic disabilities.25,28 Engaging in yoga training induces a range of physiological changes within the body that mitigate mental stress.35,36 The practice of conscious breathing is particularly beneficial in diminishing anxiety and stress levels. The beneficial impact of yoga on anxiety and stress management can also be understood through the lens of attentional bias techniques.37 Furthermore, research indicates that yoga can lower cortisol levels and decrease perceived stress among individuals,38,39 potentially explaining the observed reduction in anxiety and stress among ICU nurses. This theory posits that an imbalance in neurotransmitters, specifically dopamine – associated with reward and pleasure – and serotonin, which is linked to feelings of happiness, contributes to the onset of depression. Recent studies utilising positron emission tomography have demonstrated that engaging in yoga can elevate dopamine levels in the striatum.40 Additionally, depression is characterised by reduced levels of serum brain-derived neurotrophic factor (BDNF) and elevated cortisol levels. Engaging in yoga has been shown to enhance serum BDNF levels while simultaneously reducing cortisol levels, thereby exhibiting antidepressant properties.41 This characteristic of yoga minimises resistance to treatment for psychological distress among these individuals.26 Consequently, engaging in yoga may help to dismantle certain barriers to mental health care. Additionally, participation in yoga can foster positive experiences for ICU nurses, enhancing their social interactions. The endeavour to learn and practice a new skill also cultivates a sense of mastery, which can bolster self-efficacy and positively influence the mood of ICU nurses.
Finally, the research findings suggest that engaging in a combined training programme that incorporates both resilience and yoga significantly enhances mental health outcomes for ICU nurses, surpassing the individual effects of each training modality. Notably, these improvements were observed to last for at least 1 month after the training concluded. The results indicated that while the mental health benefits of resilience and yoga training were comparable when considered separately, their integration produced additive effects. In both mental health assessments, including the post-test and follow-up evaluations, the group participating in the combined resilience and yoga training demonstrated superior performance compared to all other groups. The ‘double advantage’ of exposure to the resilience and yoga training programme effect suggests that the mechanisms underlying each variable may be at least partially independent. This study represents, to the best of our understanding, the inaugural investigation into the synergistic impact of resilience training and yoga on the mental health of ICU nurses. Consequently, it is not feasible to draw comparisons between the findings of this research and those of prior studies. Additionally, the specific mechanisms underlying the observed additive effect of the combined interventions on the mental health of ICU nurses remain ambiguous. Nevertheless, while this research did not delve into the potential mechanisms contributing to the additive effect of resilience training and yoga, it is noteworthy that both interventions, beyond their psychobiological benefits, share a common influence in lowering cortisol levels – an established marker of stress responses – which may facilitate improvements in mental health,34,38,41 including reductions in depression and anxiety. Thus, by highlighting the additive benefits of engaging in both resilience and yoga training for the mental health of ICU nurses, this study advocates for future inquiries to explore the underlying mechanisms of this additive effect, particularly in cortisol level reduction.
The current study has several limitations that should be acknowledged. Notably, we did not adjust for baseline demographic differences in our statistical analysis, which suggests that future research should incorporate these adjustments when comparing groups. Additionally, the absence of blinding in this study may introduce bias, highlighting the need for blinding in subsequent investigations to enhance the reliability of results. Furthermore, the relatively small sample size limits the generalisability of our findings, indicating that larger sample sizes should be employed in future studies to improve external validity. Lastly, the reliance on self-reported data raises concerns about potential biases, such as social desirability and recall bias, which future research should aim to mitigate.
Conclusion
This study is, to our knowledge, the most extensive systematic investigation into the effects of resilience and yoga on mental health within a high-risk occupational group. Our results demonstrate that a combined intervention of resilience and yoga significantly alleviates symptoms of depression, anxiety and stress among nurses working in the ICU. Furthermore, the findings underscore the importance of integrating resilience and yoga practices into daily routines for enhanced mental well-being of ICU nurses. A deeper understanding of the mental health of professionals working in high-stress settings, such as ICU nurses, will be enriched by ongoing research utilising both behavioural and biological approaches to assess the relative efficacy of, and the underlying processes associated with, other significant variables. Practically, based on the findings of this study, ICU nurses should engage in both resilience training and yoga to reap the associated mental health benefits.
Acknowledgements
The authors would like to thank all the ICU nurses for their participation.
Competing interests
The authors declare that they have no financial or personal relationships that may have inappropriately influenced them in writing this article.
Authors’ contributions
R.E. and A.D. assisted with the conceptualisation, methodology, writing, original draft preparation and writing, review and editing. R.E. and K.K. assisted with the investigation and data curation. R.E. assisted with the supervision and project administration. All authors, K.K., R.E. and A.D., have read and agreed to the submitted version of the manuscript.
Funding information
This research received no specific grant from any funding agency in the public, commercial or not-for-profit sectors.
Data availability
The data presented in this study are available upon reasonable request from the corresponding author, R.E.
Disclaimer
The views and opinions expressed in this article are those of the authors and are the product of professional research. It does not necessarily reflect the official policy or position of any affiliated institution, funder, agency or that of the publisher. The authors are responsible for this article’s results, findings and content.
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