Accelerometry and salivary cortisol response during Air Force Special Tactics Officer selection

John S Cuddy,Dustin R Slivka,Walter S Hailes,Andrew R Reinert,Brent C Ruby

doi:10.1186/2046-7648-2-28

Abstract

BackgroundSpecial Tactics Officer (STO) selection is conducted to select officers to enter the combat controller training pipeline. The aims were to determine physical activity patterns, estimate energy expenditure, and identify whether return and/or unsuccessful candidates demonstrated differences in cortisol responses compared to non-selected and/or first-time attendees.MethodsParticipants completed the STO selection, consisting of 5 days of physical and mental challenges. Participants were equipped with ActiCals®, and saliva samples were collected throughout the STO selection.ResultsAverage activity counts were 684 ± 200 counts∙min−1, with no group differences. Estimated energy expenditure was 4,105 ± 451 kcal∙day−1. Cortisol was elevated following extended physical training but returned to baseline during rest. Return candidates had significantly lower cortisol responses compared to first-timers, 0.43 ± 0.06 μg∙dl−1 versus 0.76 ± 0.18 μg∙dl−1, respectively, p < 0.05.ConclusionsAn individual's salivary cortisol response to the stresses incurred during the STO selection has the potential to be incorporated into the entire picture of a candidate's performance and ability to handle stress.

Highlights

Special Tactics Officer (STO) selection is conducted to select officers to enter the combat controller training pipeline
The activity data contribute to a growing body of military research using accelerometry as a way to assess activity patterns during sustained military
In order to apply the current data into practice, a larger study looking at the cortisol response and candidate success/failure is needed

Summary

Introduction

Special Tactics Officer (STO) selection is conducted to select officers to enter the combat controller training pipeline. United States Air Force Special Tactics Officer (STO) selection is conducted biannually in an effort to select officers who possess the necessary leadership qualities to enter the combat controller training pipeline. Combat controllers are elite Special Operations soldiers who possess a high level of fitness, specialized combat skills, sky diving, parachuting (static line and free fall), scuba training, and various weapon qualifications. Combat controllers work in close cooperation with other Special Operations Forces (SOF), including Army SOF and Navy Sea, Land, and Air teams. As a SOF ground combatant force, they maintain the same or higher physical attributes of strength, stamina, and endurance as other elite SOF.

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