The recognition that sleep is one of the foundations of athlete performance is increasing both in the elite athlete arena as well as applied performance research. Sleep, the importance of sleep pdf identified through sleep deprivation and sleep extension investigations, has a role in performance, illness, injury, metabolism, cognition, memory, learning, and mood. Elite athletes have been identified as having poorer quality and quantity of sleep in comparison to the general population.
Sleep, in particular slow wave sleep, provides a restorative function to the body to recover from prior wakefulness and fatigue by repairing processes and restoring energy. In addition, research in the general population is highlighting the importance of sleep on neurophysiology, cognitive function, and mood which may have implications for elite athlete performance. It is thus increased understanding of both the effects of sleep deprivation and potential mechanisms of influence on performance that may allow scientists and practitioners to positively influence sleep in athletes and ultimately maximize performances. Check if you have access through your login credentials or your institution.
Unsourced material may be challenged and removed. While a properly fitted blindfold prevents sight even if the eyes are open, a poorly tied or trick blindfold may let the wearer see around or even through the blindfold. To cover the eyes of a blind person for health or cosmetic reasons. One common trick involves a blindfolded performer doing a task that requires vision, such as driving. During executions, to relax and calm the accused as she will be unable to see her execution and is thus less likely to panic It’s regarded as humane to blindfold.
Many highschool students who carpool use blindfolds to add excitement to games they play during the ride home from school for entertainment while waiting. Usually blindfolding is used in dares involving eating soup, ice cream, etc. Sexual activity may include blindfolding. They can be constructed with feathers and sold with handcuffs in novelty “bondage kits”.
Many impromptu items already found in the bedroom lend themselves to such use without preparation or prior purchase of specialized equipment. Use of a blindfold is said to enhance the remaining senses of the wearer, focusing attention on sound, smells and physical contact. This increased awareness is said to allow for greater excitement and anticipation by eliminating visual cues, as one cannot see what to expect. The blindfold has been a powerful symbol in divination and mythology since the 15th century.
It can represent themes of the victim, resistance to clarity, denial, or limited views. It is often accompanied by underlying themes of integrity and truth at a cost. Likewise, the icon of the blindfold can symbolize the dichotomy of the conscious and the unconscious, as wearing a blindfold represents a stasis or a lesser state of consciousness, whereas taking off one’s blindfold represents a form of awakening or rebirth. It also represents connection to feeling over senses, emphasizing the importance of emotion over perception. Why you sleep better with less light? To Keep The Light Out!
This page was last edited on 10 February 2018, at 16:54. This article is about sleep in humans. Sleep architecture”, “Waking up”, “Asleep”, and “Slept” redirect here. Sleep is associated with a state of muscle relaxation and reduced perception of environmental stimuli. The diverse purposes and mechanisms of sleep are the subject of substantial ongoing research. An artist’s creative illustration depicting REM sleep.
The most pronounced physiological changes in sleep occur in the brain. Especially during non-REM sleep, the brain uses significantly less energy during sleep than it does in waking. In other words, sleeping persons perceive fewer stimuli. However, they can generally still respond to loud noises and other salient sensory events.
REM and REM sleep are so different that physiologists identify them as distinct behavioral states. During this phase, body temperature and heart rate fall, and the brain uses less energy. 6 times in a good night’s sleep. REM sleep occurs as a person returns to stage 2 or 1 from a deep sleep. REM sleep increases in the two cycles just before natural awakening. Awakening can mean the end of sleep, or simply a moment to survey the environment and readjust body position before falling back asleep. Sleepers typically awaken soon after the end of a REM phase or sometimes in the middle of REM.