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EXERTION - 2 reference results
Exertion
Exertion is a concept describing the use of physical or perceived energy. It normally connotates a strenuous or costly effort related to physical, philosophical actions and work.

Physical

In physics exertion is use of energy against, or for, inertia as described by Isaac Newton's First Law of Motion. In mechanics it describes use of force against a body in direction of its motion (see vector).

Medical

In medical terms exertion is the expenditure of energy by skeletal muscles. The intensity of this action can be measured by the rate of which oxygen is expended, heat is produced and heart rate. A frequently used term is rating of perceived exertion or RPE-scale , also known as the Borg scale, which is use of a scale to indicate a quantitative feeling of fatigue.

Cybernetics

Exertion can be proxied or extended when applied to various human-machine interfaces, like prosthesis, remote control - even for games.

See also

References

  • First Person Physics, First Person Physics:Wooing the Second Tier, (essay part of) project proposal to National Science Foundation, 2004
  • Principle of least action, Euler, 1748, Reflexions sur quelques loix generales de la nature

External links

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Last updated on Thursday September 04, 2008 at 04:40:30 PDT (GMT -0700)
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The effects of music on the rate of perceived exertion and general mood among coronary artery bypass graft patients enrolled in cardiac rehabilitation phase II
Nov 01, 2002; Practice Management Key words cardiac rehab, exercise, music, perceived exertion The purpose of the study was to identify the...
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Central, local, and overall ratings of perceived exertion during cycling and running by women with an external or internal locus of control.
Jan 01, 1998; The concept of perceived exertion has played a decisive role in understanding the subjective sensation of the amount of physical...
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Study: Regular exercise reduces risk of cardiac death from exertion
Nov 09, 2000; Low risk after exertion The doctors warned that strenuous exercise still can pose short-term danger, at least for sedentary...
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Environmental effects on the ratings of perceived exertion in males and females.
Aug 01, 1996; Subjective ratings of perceived exertion (RPE), based on the 15-graded category-scale by Borg (1970), have been used extensively...
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The influence of exercise test protocol on perceived exertion at submaximal exercise intensities in children.
Feb 01, 2003; Abstract This study examined ratings of perceived exertion (RPE) using Borg's 6-20 scale at 50 W, 80 W, and ventilatory threshold...
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