2015). Consideration about Physical Activity Guideline and Exercise Intensity for Adult. Exercise Science, 24(2): 99-107 PURPOSE: The purpose of this review was to (i) suggest the need of physical activity (PA) guidelines for Korean via introduction of PA guideline for adult in the West; and (ii) propose new categories of PA and exercise intensity in human. METHODS: The terminology used for monitoring and promoting PA and exercise among researchers, health and fitness professionals varies

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... erably. The variation of terminology or category related to PA and exercise intensity can be confusing for researchers, health and fitness professionals. The inconsistency in terms also makes it difficult to track changes in PA/exercise pattern over time and across studies. We reviewed previous literatures focused on terminology and category of PA and aerobic exercise intensity with MEDLINE, Pubmed, and website of government organization. RESULTS: We introduced well-known PA guidelines such as the PA guideline of United States, Canada, United Kingdom, Australia, World Health Orgarnization (WHO) as well as Korea, We also proposed five categories of PA and aerobic exercise intensity (inactive, low, moderate, high, and maximal intensity) in human. CONCLUSIONS: This proposal address the doubt of standardization of PA and aerobic exercise intensity and make suggestions that may assist those undertaking research and prescribing PA and exercise.