A mind-body program for pain and stress management in active duty service members and veterans.

The Mind-Body Medicine (MBM) program at the Naval Medical Center San Diego, created in collaboration with the Benson-Henry Institute for Mind Body Medicine and the Home Base Program at Massachusetts General Hospital, is a 7-week program designed to facilitate stress management habits into patient treatment plans. The aim of this study is to test the feasibility and acceptability of a mind-body program for service members and veterans. Participants (N = 239) were primarily active duty service members of the U.S. Navy and Marine Corps reporting significant perceived stress (Stress Resiliency (SR) group; n = 124), or meeting criteria for chronic pain (Pain Management (PM) group; n = 115). Participants completed measures at preprogram and post-program assessing for perceived stress, pain, functional impairment, quality of life, and psychological and somatic symptoms. Changes in self-reported psychological symptoms and knowledge and practice of mind-body principles were examined. Participants across groups had significant improvement in most outcomes (perceived stress, response to stressful experience, functional impairment, sleep disturbance, depression, PTSD, and anxiety symptoms; and each quality of life domain aside from social relationships), with p values < .0017 (Bonferroni corrected level of significance). The SR group demonstrated significant improvements in primary outcomes of perceived stress and response to stressful experience, and the PM group demonstrated significant improvement in pain severity, but not perceived stress. Significant change was observed in knowledge and practice of mind-body medicine principles, and high satisfaction was reported. Results suggest that a mind-body program may improve physical and psychological functioning for service members, including those facing significant perceived stress and chronic pain. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Salivary nerve growth factor response to intense stress: effect of sex and body mass index.

Ample evidence links stress to psychiatric and neurological disease. Although many studies examine stress hormone secretion and receptor activity, exciting new developments signify a shift in focus to neuromodulatory systems influencing neuronal development, survival, and neuroplasticity. The purpose of this study was to characterize salivary nerve growth factor (sNGF) responses to intense stress exposure in healthy military members undergoing survival training. A second purpose was to explore effects of age, sex, education, and body mass index (BMI). One hundred sixteen military members (80% male) were studied before, during, and 24 h after a stressful mock-captivity exercise. sNGF was measured at all three time points. Reactivity, recovery, and residual elevation of sNGF were computed. General linear modeling with repeated measures evaluated effect of stress exposure, as well as the roles of age, sex, education, and BMI. sNGF increased 137% from baseline to intense stress. During recovery, sNGF remained elevated an average of 67% above baseline (i.e., residual elevation). Men showed greater sNGF reactivity than women quantified by larger absolute T1-T2Δ (+148.1 pg/mL vs. +64.9 pg/mL, p<0.017). A noteworthy trend of higher sNGF concentrations in low BMI participants was observed (p=0.058). No effects of age or education were shown. This study shows substantial reactivity and residual elevation of sNGF in response to intense stress exposure in healthy humans. Further research is needed to refine the sNGF assay, fully characterize the sNGF stress response, delineate correlates and mechanisms, and validate therapeutic applications.

Sex differences in cardiovascular and subjective stress reactions: prospective evidence in a realistic military setting.

Evidence points to heightened physiological arousal in response to acute stress exposure as both a prospective indicator and a core characteristic of posttraumatic stress disorder (PTSD). Because females may be at higher risk for PTSD development, it is important to evaluate sex differences in acute stress reactions. This study characterized sex differences in cardiovascular and subjective stress reactions among military survival trainees. One hundred and eighty-five military members (78% males) were studied before, during, and 24 h after stressful mock captivity. Cardiovascular (heart rate [HR], systolic blood pressure [SBP], diastolic blood pressure [DBP]) and dissociative states were measured at all three time points. Psychological impact of mock captivity was assessed during recovery. General linear modeling with repeated measures evaluated sex differences for each cardiovascular endpoint, and causal steps modeling was used to explore interrelationships among sex, cardiovascular reactions and psychological impact of mock captivity. Although females had lower SBP than males at all three time points, the difference was most pronounced at baseline and during stress. Accordingly, females showed greater residual elevation in SBP during recovery. Females had lower DBP at all three time points. In addition, females reported greater psychological impact of mock captivity than males. Exploratory causal steps modeling suggested that stress-induced HR may partially mediate the effect of sex on psychological impact of mock captivity. In conclusion, this study demonstrated sex-specific cardiovascular stress reactions in military personnel, along with greater psychological impact of stress exposure in females. This research may elucidate sex differences in PTSD development.