Publications by authors named "Joseph Knapik"

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Genetic markers of stress, resilience and success at an elite military selection course.
Martha Petrovick, Jessie Hendricks, Emily K Farina, Lauren A Thompson, Joseph J Knapik

Physiol Behav· February 2026

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Associations between prescription medications and sleep duration, insomnia, and sleep apnea in US military service members.
Joseph J Knapik, John A Caldwell, Ryan A Steelman, Daniel W Trone, Harris R Lieberman

Sleep Med· October 2025

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Predicting Performance in a Military Hand-to-Hand Combat Course From Salivary Hormones, Psychological State, and Academic Performance.
Meaghan E Beckner, Jesse A Stein, Drew Van Dam, Nicholas Barringer, Tracey J Smith, Joseph J Knapik

Stress Health· August 2025

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Associations between body mass index and filled prescription medications among US military service members.
Joseph J Knapik, Daniel W Trone, Ryan A Steelman, Harris R Lieberman

Obes Res Clin Pract· August 2025

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Rehabilitating Soldiers for Load Carriage Tasks: An International Perspective.
Robin Orr, Joseph J Knapik, Rachel Rodgers, Robyn Cassidy, Jacques Rousseau

Int J Environ Res Public Health· August 2025

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Differences in Sleep and Mood State Prior to Exposure are Associated With Success and Failure in a High Stress Environment: Special Forces Selection.
Harris R Lieberman, John A Caldwell, Emily K Farina, Lauren A Thompson, Joseph J Knapik

Stress Health· April 2025

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Longitudinal changes in psychological, physiological, and nutritional measures and predictors of success in Special Forces training.
Emily K Farina, Jesse A Stein, Lauren A Thompson, Joseph J Knapik, Stefan M Pasiakos

Physiol Behav· March 2025

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Insomnia and sleep apnea in the entire population of US Army soldiers: Associations with deployment and combat exposure 2010-2019, a retrospective cohort investigation.
John A Caldwell, Joseph J Knapik, Soothesuk Kusumpa, Tanja C Roy, Kathryn M Taylor

Sleep Health· February 2025

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Trends and Factors Associated with Insomnia and Sleep Apnea in U.S. Military Aviators, 2006-2022.
John A Caldwell, Joseph J Knapik

Aerosp Med Hum Perform· January 2025

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Longitudinal Changes in Dietary Supplement Use among United States Military Personnel: The US Military Dietary Supplement Use Study.
Joseph J Knapik, Daniel W Trone, Ryan A Steelman, Emily K Farina, Harris R Lieberman

Nutrients· August 2024

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Associations between Chronic Medical Conditions and Persistent Dietary Supplement Use: The US Military Dietary Supplement Use Study.
Joseph J Knapik, Daniel W Trone, Ryan A Steelman, Harris R Lieberman

Nutrients· July 2024

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Longitudinal changes in adverse effects reporting in multiple dietary supplement classifications: The US military dietary supplement use study.
Joseph J Knapik, Daniel W Trone, Ryan A Steelman, Harris R Lieberman

Food Chem Toxicol· June 2024

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Sex differences in mood, hormone and immune response to combatives training in West Point Cadets.
Meaghan E Beckner, Jesse A Stein, Mary R Lee, Joseph J Knapik, Emily K Farina

Psychoneuroendocrinology· January 2024

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Prevalence and adverse effects of sport-related nutritional supplements (sport drinks, bars, and gels) in the military before and during the COVID-19 pandemic: the US Military Dietary Supplement Use Study.
Joseph J Knapik, Daniel W Trone, Ryan A Steelman, Emily K Farina, Harris R Lieberman

J Int Soc Sports Nutr· December 2023

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The Medical Burden of Obesity and Overweight in the US Military: Association of BMI with Clinically Diagnosed Medical Conditions in United States Military Service Members.
Joseph J Knapik, Emily K Farina, Ryan A Steelman, Daniel W Trone, Harris R Lieberman

J Nutr· October 2023

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The Presence of Hip Joint Effusion on MRI Is Predictive of a Grade 4 Femoral Neck Stress Injury.
Colleen Barkley, William K Wong, Joseph J Knapik, Richard B Westrick

Mil Med· July 2023

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Associations between clinically diagnosed medical conditions and dietary supplement use: the US military dietary supplement use study.
Joseph J Knapik, Daniel W Trone, Ryan A Steelman, Emily K Farina, Harris R Lieberman

Public Health Nutr· June 2023

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Biomarkers of oxidative stress, diet and exercise distinguish soldiers selected and non-selected for special forces training.
Jesse A Stein, Emily K Farina, J Philip Karl, Lauren A Thompson, Joseph J Knapik

Metabolomics· April 2023

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Association of Body Mass Index with Injuries: A Systematic Review and Meta-Analyses Comparing Healthy Weight Military Service Members with Underweight, Overweight, and Obese.
Joseph J Knapik, Sally S Hoedebecke

J Spec Oper Med· March 2023

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Short sleep duration is associated with a wide variety of medical conditions among United States military service members.
Joseph J Knapik, John A Caldwell, Ryan A Steelman, Daniel W Trone, Emily K Farina

Sleep Med· January 2023

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Sleep and Injuries in Military Personnel With Suggestions for Improving Sleep and Mitigating Effects of Sleep Loss.
Joseph J Knapik, John A Caldwell, Bradley M Ritland

J Spec Oper Med· December 2022

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Dietary Supplement and Prescription Medication Use Among US Military Service Members With Clinically Diagnosed Medical Conditions: The US Military Dietary Supplement Use Study.
Joseph J Knapik, Daniel W Trone, Ryan A Steelman, Emily K Farina, Harris R Lieberman

J Acad Nutr Diet· October 2022

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Prescription medication use of United States military service members by therapeutic classification.
Joseph J Knapik, Daniel W Trone, Ryan A Steelman, Emily K Farina, Harris R Lieberman

Front Pharmacol· September 2022

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Obstacle Course Events: Hazards and Prevention Measures.
Joseph J Knapik

J Spec Oper Med· June 2022

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Prevalence of caffeine consumers, daily caffeine consumption, and factors associated with caffeine use among active duty United States military personnel.
Joseph J Knapik, Ryan A Steelman, Daniel W Trone, Emily K Farina, Harris R Lieberman

Nutr J· April 2022

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