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Personal trainer
A personal trainer is a fitness professional involved in exercise prescription and instruction. They motivate clients by setting goals and providing feedback and accountability to clients. Trainers also measure their client's strengths and weaknesses with fitness assessments. These fitness assessments may also be performed before and after an exercise program to measure their client's improvements in physical fitness. They may also educate their clients in many other aspects of wellness besides exercise, including general health and nutrition guidelines. Qualified personal trainers recognize their own areas of expertise. If a trainer suspects that one of his or her clients has a medical condition that could prevent the client from safe participation in an exercise program, they must refer the client to the proper health professional for prior clearance.
== Purpose of personal training ==
The scope of practice for a personal trainer is to enhance the components of fitness for the general, healthy population.
Proper exercise prescription may result in improved body composition, physical performance, heart condition and health outcomes.〔Kraemer, WJ. Exercise Physiology: Integrating Theory and Application. Lippincott Williams & Wilkins. Ahead of print, March 2011.〕 The decision to hire a trainer may be related to a perceived ability to facilitate these factors through proper prescription and instruction or factors related to motivation and adherence. A trainer pays close attention to their client's exercise form, workout routine, and nutrition plan.
Few studies have investigated training for men, however, training in women has been shown to exercise behavior patterns, improve perceptual benefit-to-concern ratio for exercise (decisional balance), and increase confidence to choose exercise in the face of other time demands (scheduling self-efficacy).〔Fischer DV, Bryant J. Effect of certified personal trainer services on stage of exercise behavior and exercise mediators in female college students. J Am Coll Health. 2008 Jan-Feb;56(4):369-76. PMID 18316279.〕 Personal training results in higher strength, higher workout intensities, and higher perceived exertion during exercise in women. Although women working with personal trainers do self-select heavier loads than women who did not, the loads used are still below recommended training load percentages.〔Ratamess NA, Faigenbaum AD, Hoffman JR, Kang J. Self-selected resistance training intensity in healthy women: the influence of a personal trainer. J Strength Cond Res. 2008 Jan;22(1):103-11. PMID 18296962.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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