Related Experiment Video
Updated: Aug 19, 2026

Measuring the Motor Aspect of Cancer-Related Fatigue using a Handheld Dynamometer
Published on: February 20, 2020
Indicators of fatigue in truck drivers
L R Hartley1, P K Arnold, G Smythe
1Dept of Psychology, Murdoch University, Western Australia.
Abstract:
This study examined physiological and psychological changes in one solo truck driver and both drivers in a two-up truck crew during several 5-6 day round-trips to the north west of Western Australia. Endocrine catecholamine levels, cardiac sinus arrhythmia and serial reaction performance all showed progressive changes over the journey. The solo driver showed greater changes on most measures than the two-up crew and compared with control measures obtained from research assistants accompanying the drivers. The results suggest that solo drivers may experience more fatigue, impaired capacity for controlled mental effort and slowed reactions than a two-up crew.
Related Concept Videos
Narcolepsy
Insufficient Sleep and Sleep Deprivation
Sleep deprivation is a more severe form of sleep loss...
Assessment of Airway, Skin Color, and Use of Accessory Muscles
Introduction
The initial evaluation of a patient's respiratory system...
Acute Respiratory Failure-IV

