Havva Sert

Dr. Havva Sert


Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 February 2023 in Chronobiology International
Verified
Journal Article
Closed access
SESeçil Ekiz Erim
Seçil Ekiz Erim
HSHavva Sert
Havva Sert
Referring to the hours during a day when a person’s physical and cognitive functions are active, the chronotype indicates the differences in individual preferences in sleep timing and other behaviors. The fact that the evening chronotype has been associated with adverse health outcomes has raised the issue of relationship between chronotype and obesity. This study aims to synthesize the evidence regarding the relationship between chronotype and obesity. As part of the study, the PubMed, OVID-LWW, Scopus, Taylor & Francis, ScienceDirect, MEDLINE Complete, Cochrane Library and ULAKBIM databases were screened for the articles published between January 01, 2010 and December 31, 2020. The quality of each study was assessed independently by the two researchers using the “Quality Assessment Tool for Quantitative Studies.” Upon evaluating the screening results, a total of seven studies, one of high quality and six of medium quality, were included in the systematic review. The rate of the minor allele (C) genes, which have been associated with obesity, and SIRT1-CLOCK genes, which have an additional effect in favor of resistance against weight loss, is higher in individuals of evening chronotype, and such individuals have been observed to have significantly higher resistance to weight loss. The evening chronotype individuals have been associated with a higher homeostasis model assessment (HOMA) value, higher plasma ghrelin levels, and a tendency toward a higher body mass index (BMI). The evening chronotypes have been reported to adhere less to a healthy diet and have more unhealthy behaviors and eating patterns. A diet adjusted to the chronotype has been seen to be more effective than conventional hypocaloric diet therapy in terms of anthropometric parameters. Most people who eat their main meals late are of evening chronotype, and such people have been determined to lose significantly less weight than those who eat early. It has been shown that bariatric surgery is less effective in weight loss in evening chronotype patients than in morning chronotype patients. The evening chronotypes are less successful in adapting to weight loss treatments and long-term weight control than the morning chronotypes.

13 April 2024 in International Journal of Disaster Risk Reduction
Verified
Journal Article
Closed access
HSHavva Sert
Havva Sert
MHMehmet Baris Horzum
Mehmet Baris Horzum
MEMerve Gulbahar Eren
Merve Gulbahar Eren
MPMeryem PELİN
Meryem PELİN
KUKubra Ucgul
Kubra Ucgul

5 December 2023 in International Nursing Review
Verified
Journal Article
Open access
HSHavva Sert
Havva Sert
MEMerve Gulbahar Eren
Merve Gulbahar Eren
FKFerhat Koc
Ferhat Koc
YYYusuf Yurumez
Yusuf Yurumez
Background: Individual and social concerns can negatively affect nurses’ mental health during a large‐scale earthquake's early stages, making it challenging to perform their professional responsibilities.Aim: This cross‐sectional correlational study aimed to examine the relationship between depression, anxiety, and stress levels Turkish nurses experienced during an earthquake's early period. The nurses participating in this study were not directly present in the earthquake‐affected area.Methods: The study was conducted on 232 nurses between February 10 and 25, 2023. The data were collected using the Depression, Anxiety, Stress‐21 Scale and the Job Performance Evaluation Form developed by the researchers through a literature review. These were used to investigate nurses’ work motivation changes due to the earthquake. The study followed the STROBE checklist for cross‐sectional studies.Results: The participants’ depression levels were severe, anxiety levels were extremely severe, and stress levels were moderate following the earthquake. Nurses who felt exhausted experienced reduced energy levels toward their work and reported a decrease in their desire, effort, and work motivation to perform well. In addition, they had higher depression, anxiety, and stress scores (p < 0.005).Conclusion: Psychological difficulties, including depression, anxiety, and stress experienced by nurses not directly present in an earthquake‐affected area, reduced their professional efforts and motivation and negatively affected the patient care process. Further studies should focus on conducting comparative studies in different cultures affected by natural disasters on the longitudinal analysis of the impacts of nurses' psychological distress on their job performance.Implications for nursing and health policy: Nursing policymakers should be aware of the negative psychological effects experienced by nurses during the early post‐earthquake period, even if they are not directly present in the earthquake‐affected area. The study recommended that nurses should be provided with psychological support to deal with the negative effects of natural disasters and maintain job performance, including the nursing care process.

8 April 2021 in Acta Paulista de Enfermagem
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Journal Article
Open access
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SÖSerap Çetinkaya Özdemir
Serap Çetinkaya Özdemir
HSHavva Sert
Havva Sert
Resumo Objetivo: Determinar comportamentos saudáveis de estilo de vida de estudantes universitários e fatores relacionados. Métodos: Projetado para usar o método de amostragem descritivo e estratificado, o estudo incluiu 2.100 estudantes nos departamentos de Ciências da Saúde, Ciências, Ciências Sociais e Ciências da Educação da Sakarya University, Turquia. O estudo foi realizado entre maio e dezembro de 2015. Foram coletados dados que incluem características sociodemográficas e Health-Promoting Lifestyle Profile II (HPLP II). O teste U de Mann Whitney, o teste [...] Resumo Objetivo: Determinar comportamentos saudáveis de estilo de vida de estudantes universitários e fatores relacionados. Métodos: Projetado para usar o método de amostragem descritivo e estratificado, o estudo incluiu 2.100 estudantes nos departamentos de Ciências da Saúde, Ciências, Ciências Sociais e Ciências da Educação da Sakarya University, Turquia. O estudo foi realizado entre maio e dezembro de 2015. Foram coletados dados que incluem características sociodemográficas e Health-Promoting Lifestyle Profile II (HPLP II). O teste U de Mann Whitney, o teste

24 May 2025 in BMC Sports Science, Medicine and Rehabilitation
Verified
Journal Article
Open access
PDF file
HSHavva Sert
Havva Sert
MEMerve Gulbahar Eren
Merve Gulbahar Eren
BGBusra Gurcay
Busra Gurcay
FKFerhat Koc
Ferhat Koc
Background: High-intensity interval training (HIIT) is an effective exercise for improving physical and psychological function. However, there is an ongoing debate about the effects of HIIT on older adults. This study aimed to examine the effects of HIIT on cardiometabolic health and quality of life in older adults and to provide evidence-based information on the effectiveness of this type of exercise by performing a meta-analysis of randomized controlled trials. Methods: The ScienceDirect, PubMed, Web of Science, Scopus, Cochrane CENTRAL, CINAHL, and Pedro databases were used to search for all studies conducted up to December 1, 2024. Data were analyzed using Cochrane Review Manager (RevMan) [version 5.4.1] software. Quality of life data was analyzed using standardized mean difference (SMD), while mean difference (MD) was calculated for continuous variables such as heart (bpm), V̇O₂peak (mL·kg⁻1·min⁻1), 6MWT (m), and gait speed (m/s). In cases where high heterogeneity was observed, the random-effects model was preferred, and in cases where low heterogeneity was observed, the fixed-effects model was preferred. Results: This meta-analysis was performed using data from 11 studies. HIIT intervention groups had statistically significant increases in 6MWT (z = 3.24; 95% CI = [24.56, 78.67]; p = 0.0002), V̇O₂peak (z = 3.74; 95% CI = [1.38, 4.42]; p = 0.0002), and quality of life (z = 2.66; 95% CI = [0.40, 2.63]; p = 0.008) compared to the control groups. However, the meta-analysis indicated that HIIT resulted in non-significant changes in gait speed (z = 1.43; 95% Cl = [-0.04, 0.28]; p = 0.15). Conclusions: This meta-analysis revealed that HIIT interventions in older adults positively affect cardiometabolic health parameters (6MWT, V̇O₂peak) and quality of life. Conducting HIIT as a supportive treatment component with health professionals such as physicians, physiotherapists, and nurses within the framework of a multidisciplinary team approach may contribute to improving the health of older adults. Trial registration: The study was registered on the International Prospective Registry of Systematic Reviews-PROSPERO database (CRD42023481425) on November 20, 2023.

4 January 2024 in Nursing in Critical Care
Verified
Journal Article
Open access
HSHavva Sert
Havva Sert
MEMerve Gulbahar Eren
Merve Gulbahar Eren
KUKübra Ucgul
Kübra Ucgul
Background: No previous study has examined the direct effect of occupational fatigue, inter‐shift recovery and compassion competence on caring behaviours, including assurance, knowledge‐skill, respect and commitment in intensive care nurses.Aim: We studied the direct effect of participating nurses' occupational fatigue, inter‐shift recovery and compassion competence levels on their caring behaviours and the relationship among these variables.Study Design: This was a descriptive correlational study. All nurses who were registered members of the Turkish Intensive Care Nurses Association were invited to participate in this online survey. This study was conducted with 315 intensive care nurses using convenience sampling between April and July 2022. The data were collected using the Occupational Fatigue Exhaustion/Recovery Scale, which consists of three subscales: acute fatigue, chronic fatigue and inter‐shift recovery; the Compassion Competence Scale, including communication, sensitivity and insight subscales; and the Caring Behaviours Inventory‐24. In addition, a structural equation model was established using variables correlating with caring behaviours. Independent variables were occupational fatigue, inter‐ship recovery and compassion competence; and the dependent variable was caring behaviours in this hypothesized model.Results: Three hundred and fifteen nurses completed the survey (315/1000) with a response rate of 31.5%. The increase in the inter‐shift recovery levels of participants was statistically and positively associated with caring behaviours (95% confidence interval [CI]: 0.001–0.011, β = .154 [moderate effect size], p < .05). The sub‐dimensions of the Compassion Competence Scale, that is, communication (95% CI: 0.110–0.443, β = .251 [moderate effect size]) and sensitivity (95% CI: 0.084–0.427, β = .241 [moderate effect size]), were statistically and positively associated with the caring behaviours of participants (p < .05). In addition, independent variables accounted for 35% (large effect size) of the total change in caring behaviours (R2 = 0.350).Conclusions: This study suggests that the high inter‐shift recovery and compassion competence levels of intensive care nurses are positively associated with their caring behaviours.Relevance to Clinical Practice: Nursing managers should consider the direct effect of occupational fatigue, inter‐shift recovery and the compassion competence levels of intensive care nurses on their caring behaviours to provide high‐quality care.