Correct answer
The field of vision decreases and the onset of fatigue speeds up.
Riding at high speed reduces the useful field of vision and leaves less time and space to anticipate hazards and correct mistakes. Sustained high-speed riding demands greater effort and promotes fatigue and distraction. The tunnel effect refers to narrowing of the visual field, rather than fatigue itself.
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The field of vision decreases and the onset of fatigue speeds up.
The field of vision decreases and the onset of fatigue is delayed.
The field of vision increases and the onset of fatigue speeds up.
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