Assertion: caffeine's effect | /r/CapableOf | enhance vigilance
Facets:
value: during bouts of extended exhaustive exercise
type: TEMPORAL
Source sentences:
text: Such positive effects include potentiation of skeletal muscle force, work and power (4), enhanced vigilance during bouts of extended exhaustive exercise, as well as periods of sustained sleep deprivation (5), improvements in motor learning and short term memory (6) and enhanced lipolysis with a decreased reliance on glycogen utilization (7).