scholarly journals The anticipatory stress response to sport competition; a systematic review with meta-analysis of cortisol reactivity

2017 ◽  
Vol 3 (1) ◽  
pp. e000261 ◽  
Author(s):  
Kjell N van Paridon ◽  
Matthew A Timmis ◽  
Charlotte M Nevison ◽  
Matt Bristow
Keyword(s):  
Systematic Review ◽  
Stress Response ◽  
Meta Analysis ◽  
Cortisol Reactivity ◽  
Sport Competition

scholarly journals The cortisol stress response induced by surgery: A systematic review and meta-analysis

2018 ◽  
Vol 89 (5) ◽  
pp. 554-567 ◽  
Author(s):  
Alessandro Prete ◽  
Qi Yan ◽  
Khaled Al-Tarrah ◽  
Halis K. Akturk ◽  
Larry J. Prokop ◽  
...  
Keyword(s):  
Systematic Review ◽  
Stress Response ◽  
Meta Analysis

scholarly journals Basal cortisol, cortisol reactivity, and telomere length: A systematic review and meta-analysis

2019 ◽  
Vol 103 ◽  
pp. 163-172 ◽  
Author(s):  
Yanping Jiang ◽  
Wendi Da ◽  
Shan Qiao ◽  
Quan Zhang ◽  
Xiaoming Li ◽  
...  
Keyword(s):  
Systematic Review ◽  
Telomere Length ◽  
Meta Analysis ◽  
Cortisol Reactivity ◽  
Basal Cortisol

scholarly journals Pain and Cortisol in Patients with Fibromyalgia: Systematic Review and Meta-Analysis

Diagnostics ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 922
Author(s):  
Edurne Úbeda-D’Ocasar ◽  
Victor Jiménez Díaz-Benito ◽  
Gracia María Gallego-Sendarrubias ◽  
Juan Antonio Valera-Calero ◽  
Ángel Vicario-Merino ◽  
...  
Keyword(s):  
Systematic Review ◽  
Methodological Quality ◽  
Meta Analysis ◽  
Chronic Widespread Pain ◽  
Pain Tolerance ◽  
Therapeutic Interventions ◽  
Widespread Pain ◽  
Cortisol Reactivity ◽  
Pressure Pain Thresholds ◽  
Cortisol Levels

This systematic review and meta-analysis sought to gain further insight into the relationship between cortisol reactivity and chronic widespread pain in patients with fibromyalgia. The studies selected were those conducted in adults with fibromyalgia that were random controlled, non-controlled or observational. Studies were excluded if they examined diseases other than fibromyalgia or if they did not report on pain or cortisol. Twelve studies met inclusion criteria. Data were extracted into tabular format using predefined data fields by two reviewers and assessed for accuracy by a third reviewer. The methodological quality of the studies was assessed using the PEDro scale. Data Synthesis: Of 263 studies identified, 12 were selected for our review and 10 were finally included as their methodological quality was good. In the meta-analysis, we calculated effect sizes of interventions on pain indicators and cortisol levels in patients with fibromyalgia. A small overall effect of all the interventions was observed on pain tolerance and pressure pain thresholds, yet this effect lacked significance (ES = 0.150; 95%CI 0.932–1.550; p > 0.05). Conclusions: While some effects of individual nonpharmacological therapeutic interventions were observed on both cortisol levels and measures of pain, our results suggest much further work is needed to elucidate the true relationship between chronic widespread pain and cortisol levels in patients with fibromyalgia.

scholarly journals Effects of public green space on acute psychophysiological stress response: a systematic review and meta-analysis of the experimental and quasi-experimental evidence

2019 ◽  
Author(s):  
Lærke Mygind ◽  
Eva Kjeldsted ◽  
Rikke Hartmeyer ◽  
Erik Mygind ◽  
Matt P. Stevenson ◽  
...  
Keyword(s):  
Systematic Review ◽  
Stress Response ◽  
Acute Stress ◽  
Meta Analysis ◽  
Empirical Support ◽  
Causal Link ◽  
Small Sample ◽  
Future Research ◽  
Natural Environments ◽  
Psychophysiological Stress

Contact with nature is widely considered to ameliorate psychological stress, but the empirical support for a causal link is limited. We conducted a systematic review to synthesize and critically assess the evidence. Six electronic databases were searched. Twenty-six studies evaluated the difference between the effect of natural environments and that of a suitable control on the acute psychophysiological stress response. Eighteen studies were rated as being of moderate quality, 4 low quality, and 4 high quality. Meta-analyses indicated that seated relaxation (g = .5, p =.06) and walking (g = .3, p =.02) in natural environments enhanced heart rate variability more than the same activities in control conditions. Cortisol concentration measures were inconsistent. While intuitively and theoretically sound, the empirical support for acute stress-reducing effects of immersion in natural environments is tentative due to small sample sizes and methodological weaknesses in the studies. We provide guidelines for future research.

scholarly journals Effects of Public Green Space on Acute Psychophysiological Stress Response: A Systematic Review and Meta-Analysis of the Experimental and Quasi-Experimental Evidence

2019 ◽  
pp. 001391651987337 ◽  
Author(s):  
Lærke Mygind ◽  
Eva Kjeldsted ◽  
Rikke Hartmeyer ◽  
Erik Mygind ◽  
Matt P. Stevenson ◽  
...  
Keyword(s):  
Systematic Review ◽  
Stress Response ◽  
Acute Stress ◽  
Meta Analysis ◽  
Empirical Support ◽  
Causal Link ◽  
Small Sample ◽  
Future Research ◽  
Natural Environments ◽  
Psychophysiological Stress

Contact with nature is widely considered to ameliorate psychological stress, but the empirical support for a causal link is limited. We conducted a systematic review to synthesize and critically assess the evidence. Six electronic databases were searched. Twenty-six studies evaluated the difference between the effect of natural environments and that of a suitable control on the acute psychophysiological stress response. Eighteen studies were rated as being of moderate quality, four studies of low quality, and four studies of high quality. Meta-analyses indicated that seated relaxation ( g = .5, p = .06) and walking ( g = .3, p = .02) in natural environments enhanced heart rate variability more than the same activities in control conditions. Cortisol concentration measures were inconsistent. While intuitively and theoretically sound, the empirical support for acute stress-reducing effects of immersion in natural environments is tentative due to small sample sizes and methodological weaknesses in the studies. We provide guidelines for future research.

scholarly journals Short-term elevations in glucocorticoids do not alter telomere lengths: A systematic review and meta-analysis of non-primate vertebrate studies

PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0257370
Author(s):  
Lauren Zane ◽  
David C. Ensminger ◽  
José Pablo Vázquez-Medina
Keyword(s):  
Systematic Review ◽  
Stress Response ◽  
Telomere Length ◽  
Meta Analysis ◽  
Outcome Data ◽  
Risk Of Bias ◽  
Telomere Maintenance ◽  
Life History Stage ◽  
Bias Assessment ◽  
The Relationship

Background The neuroendocrine stress response allows vertebrates to cope with stressors via the activation of the Hypothalamic-Pituitary-Adrenal (HPA) axis, which ultimately results in the secretion of glucocorticoids (GCs). Glucocorticoids have pleiotropic effects on behavior and physiology, and might influence telomere length dynamics. During a stress event, GCs mobilize energy towards survival mechanisms rather than to telomere maintenance. Additionally, reactive oxygen species produced in response to increased GC levels can damage telomeres, also leading to telomere shortening. In our systematic review and meta-analysis, we tested whether GC levels impact telomere length and if this relationship differs among time frame, life history stage, or stressor type. We hypothesized that elevated GC levels are linked to a decrease in telomere length. Methods We conducted a literature search for studies investigating the relationship between telomere length and GCs in non-human vertebrates using four search engines: Web of Science, Google Scholar, Pubmed and Scopus, last searched on September 27th, 2020. This review identified 31 studies examining the relationship between GCs and telomere length. We pooled the data using Fisher’s Z for 15 of these studies. All quantitative studies underwent a risk of bias assessment. This systematic review study was registered in the Open Science Framework Registry (https://osf.io/rqve6). Results The pooled effect size from fifteen studies and 1066 study organisms shows no relationship between GCs and telomere length (Fisher’s Z = 0.1042, 95% CI = 0.0235; 0.1836). Our meta-analysis synthesizes results from 15 different taxa from the mammalian, avian, amphibian groups. While these results support some previous findings, other studies have found a direct relationship between GCs and telomere dynamics, suggesting underlying mechanisms or concepts that were not taken into account in our analysis. The risk of bias assessment revealed an overall low risk of bias with occasional instances of bias from missing outcome data or bias in the reported result. Conclusion We highlight the need for more targeted experiments to understand how conditions, such as experimental timeframes, stressor(s), and stressor magnitudes can drive a relationship between the neuroendocrine stress response and telomere length.

The effects of low-ratio n-6/n-3 PUFA on biomarkers of inflammation: a systematic review and meta-analysis

2021 ◽  
Author(s):  
Yali Wei ◽  
Yan Meng ◽  
Na Li ◽  
Qian Wang ◽  
Liyong Chen
Keyword(s):  
Systematic Review ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acid ◽  
Meta Analysis ◽  
Chain Polyunsaturated Fatty Acid ◽  
Inflammation Markers ◽  
Pufa Supplementation ◽  
Long Chain

The purpose of the systematic review and meta-analysis was to determine if low-ratio n-6/n-3 long-chain polyunsaturated fatty acid (PUFA) supplementation affects serum inflammation markers based on current studies.

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