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The experiment was done in a DC-7 flight simulator (KLM). The effect of flying manoeuvres varying only slightly in degrees of difficulty, on the depended measures was studied.
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Material and methods.
The flying manoeuvres in order of supposedly increasing difficulty were:
1) continuous straight and level flight on AUTO - PILOT;
2) continuous straight and level flight MANUAL;
3) straight and level flight between TURNS;
4) rate one TURNS;
5) ground controlled approach.
"Rest phase" outside the simulator was used as reference. Only heart rate and sinus arrhythmia were measured.
Both variables differentiated significantly between the flight phases ANOVAR F values were 7.12. for HR ( p < 0.001) and 3.69 for SA ( p <0.025 ). However, it was obvious from the material that these significancies were achieved by the extreme positions of the approach as the most difficult phase.
Values for the other phases were not in a predicted order, suggesting that the variables were not sufficiently sensitive to differentiate between phases that varied only little in degree of difficulty.
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