Fig 1.
Plot mean alpha-amylase levels (U/mL) per measurement.
The first measurement took place 15 minutes after the participant arrived at the skydive center, the second after they received the instructions and were ready to board the plane, the third immediately after they landed, and the fourth 20 minutes after they landed.
Fig 2.
Individual plots alpha-amylase levels (U/mL) on four measurements surrounding the tandem skydive.
The first measurement took place 15 minutes after the participant arrived at the skydive center, the second after they received the instructions and were ready to board the plane, the third immediately after they landed, and the fourth 20 minutes after they landed. The mean score of the four measurements is shown on the y-axis. The grey cross indicates a participant with an outlier on T4. This participant was removed prior to further analyses.
Table 1.
Descriptive statistics.
Table 2.
Regression analyses for trait and state predictors on alpha-amylase reactivity and recovery.
Table 3.
Regression analyses for alpha-amylase reactivity and recovery on state anxiety, PA, and self-esteem after the skydive.
Fig 3.
Interaction between reactivity and recovery on self-esteem.