Cortisol

Preoperative anxiety is a common problem in patients undergoing elective cesarean section and may negatively affect perioperative outcomes through activation of the stress response, including increased cortisol levels. Effective preoperative information is considered a key non-pharmacological strategy to reduce anxiety; however, the optimal method of information delivery remains unclear. This prospective randomized controlled trial aims to compare the effects of video-based versus verbal preoperative information on anxiety levels and serum cortisol response in patients scheduled for elective cesarean delivery under spinal anesthesia. Anxiety will be assessed using the State-Trait Anxiety Inventory (STAI), and serum cortisol levels will be measured before and after the intervention. The findings of this study are expected to provide evidence for improving patient-centered preoperative education strategies in obstetric anesthesia."

The goal of this clinical trial is to learn about the effects of three different interventions-breastfeeding, using a stress ball, or wearing virtual reality (VR) goggles-on pain, anxiety, and stress during episiotomy repair (stitching) after childbirth. It also aims to examine how these methods affect a mother's comfort after the procedure. The main questions it aims to answer are: Does breastfeeding, using a stress ball, or using VR goggles lower the mother's pain and anxiety during the repair? Do these interventions reduce the mother's biological stress levels, measured by saliva cortisol tests? Do these methods lead to higher postpartum comfort levels for the mother in the first 24 hours after birth? Researcher will compare these three intervention groups to a "control group" (mothers receiving standard hospital care) to see which approach is most effective. Participants will: Be randomly assigned to one of four groups: Breastfeeding, VR Goggles, Stress Ball, or Standard Care. Use their assigned intervention throughout the entire episiotomy repair process. Provide saliva samples before and after the procedure to measure stress hormones (cortisol). Rate their pain and anxiety levels using clinical scales twice: once before the procedure begins and once immediately after it is finished. Complete a survey about their comfort levels between 6 and 24 hours after the delivery.

Postoperative complications after surgical procedures, including following total knee arthroplasty (TKA), have a negative impact on the health and well-being of surgical patients. Older adults (≥65 years) are particularly vulnerable to postoperative complications and their associated morbidities due to the biological aging process. Older adults comprise nearly half of surgical patients worldwide, and this number is expected to increase in the next 10-20 years as the aging population continues to grow. TKA is the most common procedure undergone by older adults, and the rate of TKA procedures is also expected to rise. Despite perioperative guidelines and protocols to prevent postoperative complications, the prevalence of postoperative complications following TKA is approximately 12%. Given these statistics, millions of older adults undergoing TKA may be at risk for postoperative complications and their associated morbidities in the coming decades. Therefore, additional interventions are needed to combat postoperative complications in this population. The body's natural response to surgery, also known as the surgical stress response (SSR), contributes to postoperative complications through complex mechanisms involving the autonomic nervous system (ANS). Increased sympathetic nervous system (SNS) activity, or the body's fight-or-flight response, causes dysregulation in feedback systems that regulate the stress response, potentially leading to poorer outcomes. Interventions, such as breathwork, that induce the parasympathetic nervous system (PNS), or the body's rest-and-digest response, have been shown to balance the ANS, regulate stress biology, and improve outcomes. This study will examine the feasibility of adding a breathwork intervention (Box Breathing), compared to an attention control, to standard perioperative care for older adults undergoing TKA. This study will also examine the proof of concept that Box Breathing, compared to an attention control, may help regulate the SSR by assessing an objective measure of stress-related biology, diurnal cortisol rhythm, and gathering self-report information on pain, anxiety, depression, and quality of recovery following TKA.

The purpose of this research is to investigate associations between mindfulness and meditation techniques and changes in maternal breastmilk in the mother pumping for her NICU infant.

The proposed project will evaluate the synergistic effects of a nutritional formulation, 'Think Tank' on cognitive performance following exposure to a psychological and physical stressor. Adopting a double-blind repeated measures cross-over design, middle-aged females (40-60 years) will be recruited to take part in a two-stage research study that will examine whether the formulation enhances cognitive performance and subjective well-being following the challenge of a stressor, compared to placebo. Cognitive assessments will examine the impact of the nutritional formulation on working memory, sustained attention, cognitive flexibility and inhibitory control. The study will also assess physiological (heart rate, blood pressure and cortisol) and subjective (well-being, anxiety, positive and negative mood, stress) markers of stress reactivity. The study will also explore levels sleep quality, mental and physical fatigue, effort, productivity, and perceived impact of the intervention.

The goal of this clinical trial is to learn if light can enhance the feeling of well-being and sleep quality in Radiographers. It will also find out if there is an optimal recipe for light. The main questions it aims to answer are: * Will alertness, energy levels, and sleep quality increase in radiographers when the lighting is differed? * What light recipe is the most beneficial for the personnel? Researchers will compare no enhanced light environment to different enhanced light environment to see if the enhanced light is beneficial for radiographers. Participants will: * Will work in an enhanced light environment or a non-enhanced light environment * Answer surveys * Take saliva sample