• Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi · Jul 2012

    [Evaluation of stress levels during parachuting training by salivary biomarker].

    • Liang-en Chen, Xiao-li Zhang, Rui-qing An, and Hao Zhan.
    • Institute of Aviation Medicine, Air Force, Beijing, China.
    • Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi. 2012 Jul 1;30(7):509-12.

    ObjectiveTo evaluate the stress level during parachuting training by salivary biomarker and to study the dynamic characteristics.MethodsTwenty recruits of military parachuting training completed 8 trainings in a month. The saliva samples were collected at 2 h and 1h before boarding and at 0.5 h after landing on the 1st, 4th and 7th trainings. The levels of cortisol, chromogranin A and α-amylase in saliva samples were detected.ResultsThe concentrations of cortisol, chromogranin A and activity of α-amylase increased significantly from pre-boarding to landing during 3 trainings. The concentrations of cortisol, chromogranin A and activity of α-amylase at 2 h before boarding and at 0.5 h after landing decreased significantly with the training times. However, the changes of 3 biomarkers at 1 h before boarding among 3 trainings were not significant.ConclusionThe levels of stress increased significantly for 20 recruits from pre-boarding to landing during parachuting trainings. The stress levels of 20 recruits before boarding and after landing significantly decreased with parachuting training times.

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