Timothy S. Webb

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INTRODUCTION Fatigue in military aviation is a significant safety and operational problem resulting in diminished alertness and performance. Research demonstrates that stimulant medications maintain alertness and performance in sleep-deprived aircrew. However, these studies control many of the variables present during combat operations. Few studies have(More)
OBJECTIVE Mild traumatic brain injury (mTBI) accounts for more than 75% of traumatic brain injuries every year. This study examines the temporal association between non-blast mTBI and the onset of neurologic sequelae to illuminate risks of post-concussive syndrome, epilepsy and chronic pain. METHODS A large historical prospective study was conducted(More)
Two airmen exposed to radio-frequency radiation 38 times above the Air Force permissible exposure level were medically evaluated for physical effects from exposure. Initial anxiety and hypertension were found, but these problems resolved with therapy. This case is reported with the hope that further research will be undertaken to understand the behavioral(More)
In large-scale computer simulation models it is often neeessary to perform a screening experiment to reduce the number of factors to be examined in subsequent analysis. This study evaluated the results of a Plackett-Burman screening design using three different analysis strategies: 1) an approach due to Box and Meyer (1993); 2) an approach due to Hamada and(More)
BACKGROUND Little is known regarding long-term performance decrements associated with mild Traumatic Brain Injury (mTBI). The goal of this study was to determine if individuals with an mTBI may be at increased risk for subsequent mishaps. METHODS Cox proportional hazards modeling was utilized to calculate hazard ratios for 518,958 active duty U.S. Air(More)
OBJECTIVE Military personnel are at increased risk for traumatic brain injury (TBI) from combat and noncombat exposures. The sequelae of moderate to severe TBI are well described, but little is known regarding long-term performance decrements associated with mild TBI. Furthermore, while alcohol and drug use are well known to increase risk for TBI, little is(More)
OBJECTIVE To study the illness and injury risk and healthcare utilization of male U.S. Air Force (USAF) battlefield airmen in comparison to male USAF security forces. METHODS Using data in electronic format, battlefield airmen (n = 2,089) and security forces personnel (n = 19,416) were identified and matched to data from the Military Health System, with(More)
INTRODUCTION Many assume that exposure to flight in high-performance aircraft (HPA) or rotary wing aircraft (RWA) increases the risk of spinal disorders compared to other fixed wing aircraft (FWA). However, this association has yet to be confirmed. This study explores the relationship between flight in different aircraft and the development of lumbar and(More)
BACKGROUND With the advent of electronic records, the opportunity to conduct research on workplace-related injuries and musculoskeletal disorders has increased dramatically. The purpose of this study was to examine the United States Air Force Civil Engineering career field to determine if they are negatively impacted by their work environment. Specifically,(More)