The following manuscripts have been published or are currently in press. Listings are in chronological order, unless otherwise noted.
| Title | Publication | Date/Location |
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| Comparing Self-Reported Physical Activity and Sedentary Time to Objective Fitness Measures in a Military Cohort | Journal of Science and Medicine in Sport | 2019 Jan;22(1):59-64 |
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de la Motte SJ, Welsh MM, Castle V, Burnett D, Gackstetter GD, Littman AJ, Boyko EJ, and Hooper TI This was a cross-sectional study of 10,105 Air Force Millennium Cohort participants who completed a physical fitness assessment (PFA) in 2007-2008. Linear regression was used to relate objective PFA measures to self-reported physical activity (PA) and sedentary behavior, and logistic regression was used to examine the risk of PFA failure associated with these self-reported measures. After controlling for demographic characteristics, BMI, and smoking status, we found self-reported PA and screen time were associated with some objective PFA measures, including VO2Max and abdominal circumference. However, screen time alone was associated with odds of PFA failure. |
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| Surveillance Snapshot: Human Papillomavirus Vaccination Among U.S. Active Component Service Members in the Millennium Cohort Study, 2006 to 2017 | Medical Surveillance Monthly Report | 2019 Jun;26(6):18 |
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Matsuno RK, Porter B, Warner SG, Wells N Among a sample of active component members under the age of 26, (22,387 service women and 31,705 service men), service more women (37.8%) were more likely than service men (3.9%) to initiate receiving the HPV vaccine. Among those who initiated the vaccine, 40.2% of women and 23.1% of men were adherent to receiving all 3 doses within 1 year. Members of the Air Force and those in healthcare occupations had higher percentages of HPV vaccine initiation and adherence. |
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| Sexual Harassment, Sexual Assault, and Physical Activity Among U.S. Military Service Members in the Millennium Cohort Study | Journal of Interpersonal Violence | 2019 Mar 2;886260519832904. doi: 10.1177/0886260519832904 |
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Thomas CL, Nieh C, Hooper TI, Gackstetter GD, LeardMann CA, Porter B, Blazer DG; for the Millennium Cohort Study Team This study examined the association of recent sexual trauma with subsequent physical activity levels among service members. The findings indicate that personnel who experienced sexual assault were more likely to report high levels of physical activity (300+ mins/week), while those who reported sexual harassment were less likely to engage in medium-high levels of physical activity (300-449 mins/week), compared with those without sexual harassment or sexual assault. This study highlights how coping responses to sexual trauma among current military members may be intertwined with physical activity. |
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| Combat and Trajectories of Physical Health Functioning in U.S. Service Members | American Journal of Preventative Medicine | 2019 Nov;57(5):637-644 |
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Porter B, Bonanno GA, Bliese PD, Phillips CJ, Proctor SP for the Millennium Cohort Study Team Combat is detrimental to long-term physical health functioning among deployed service members, but other pre-deployment modifiable factors like body size and smoking status had stronger associations with subsequent trajectories. This indicates the negative impact of combat may be mitigated through pre-deployment healthy behaviors. |
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| Healthy Behaviors and Incidence of Overweight and Obesity in Military Veterans | Annals of Epidemiology | 2019;39:26–32.e1 |
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Bookwalter DB, Porter B, Jacobson IG, Kong SY, Littman AJ, Rull RP, Boyko EJ This study looked at how several healthy behaviors of veterans (including moderate-to-high physical activity, low sedentary time, eating little fast-food, appropriate nightly sleep duration, non-smoking, and moderate alcohol use) were associated with weight changes. Veterans who reported more healthy behaviors were less likely to become overweight and/or obese. For example, if all veterans of a healthy weight followed all six healthy behaviors, the number of veterans becoming overweight is estimated to go down by 23% and the number of veterans becoming obese is estimated to go down by 68%. |
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| Posttraumatic Stress Disorder and Risk of Selected Autoimmune Diseases among US Military Personnel | BMC Psychiatry | 2020 Jan 15; 20 (1):23 |
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Bookwalter DB, Roenfeldt KA, LeardMann CA, Kong SY, Riddle MS, Rull RP This study investigated the association between PTSD and risk of developing selected autoimmune diseases among US active duty service members. Among 120,572 participants followed for an average of 5 years, risk of any of the selected new-onset autoimmune diseases was 58% higher for those with a history of PTSD compared to those with no history. Observed associations did not differ by specific types of trauma experienced. Future research is needed to understand the physiological pathways that may link PTSD with increased risk of immune-mediated inflammatory diseases. |
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| Smoking Among U.S. Service Members Following Transition From Military to Veteran Status | Health Promotion Practice | 2020 Jan;21(1_suppl):165S-175S |
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Nieh C, Powell TM, Gackstetter GD, Hooper TI This study examined whether the time period just prior to military separation or the reasons for separation were associated with smoking among veterans. We found that service members are more likely to smoke when closer to their military separation date. The smoking prevalence among service members separating within 3 months was 23%, whereas 17% was observed among those separating in 2+ years. We also found that veterans who were heavy drinkers were 50% more likely to smoke and those with a standards/judicial-related separation reason were 69% more likely to smoke. |
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| Prevalence of Chronic Multisymptom Illness/Gulf War Illness Over Time Among Millennium Cohort Participants, 2001 to 2016 | Journal of Occupational and Environmental Medicine | 2020 Jan;62(1):4-10 |
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Porter B, Long K, Rull RP, Dursa EK for the Millennium Cohort Study Team Chronic multisymptom illness/Gulf War illness (CMI/GWI) is a signature illness of the 1990-1991 Gulf War. Using a modified CMI/GWI definition, this study estimated the prevalence of CMI/GWI from 2001-2016 among Gulf War veterans and two other non-deployed groups enrolled in the Millennium Cohort Study. Overall, Gulf War veterans had the highest prevalence of CMI/GWI across the study period. The prevalence among all three groups increased substantially at approximately the same rate from 2001 to 2016. |
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| Surveillance Snapshot: Cervical Screening among U.S. Military Servicewomen in the Millennium Cohort Study, 2003 to 2015 | Medical Surveillance Monthly Report | 2020 Jul;27(7):15 |
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Matsuno RK, Porter B, Warner SG, Wells N for the Millennium Cohort Study Team Across a 13 year period (2003-2015), the percentage of U.S. service women who were up-to-date with cervical cancer screening peaked in 2010, then declined. Screening was generally highest among Air Force personnel and lowest among Navy personnel. Being up-to-date was higher for servicewomen who had initiated the HPV vaccine than for women who had not. |
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| Mental Health, Physical Health, and Health-Related Behaviors of U.S. Army Special Forces | PLOS One | 2020 Jun 3;15(6):e023356 |
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Cooper AD, Warner SG, Rivera AC, Rull RP, Adler AB, Faix DJ, Neff RR, Deagle EA, Caserta RJ, LeardMann CA, for the Millennium Cohort Study Team Using prospective data, Army Special Forces personnel and Ranger Qualified infantrymen reported fewer mental health problems, multiple somatic symptoms, and unhealthy behaviors than General Purpose Forces infantrymen. Findings indicate that the adoption of healthy behaviors, such as adequate sleep and physical activity, may be an efficient and cost-effective approach for preventing adverse health outcomes, regardless of occupational specialization or prior health status. |
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