Week 9 readings summary Flashcards
define sedentary
sitting and lying during waking hours when there is very low (<1.5METs) energy expenditure
where do declines in children’s PA stem from?
social and environmental change, rather than a decreased interest in PA or decreased participation in sport
three main beneficial effects which derive from adequate childhood activity
enhancement of physiological and psychological development during childhood
delay in onset, or retardation of the rate of development of health risk factors
improved likelihood of maintaining adequate activity/SB levels into adulthood, this indirectly enhancing adult health status
where is there no evidence?
that PA and/or cardiorespiratory fitness during childhood and adolescence are related to the occurrence of CVD in adulthood
where is there evidence?
that PA and/or cardiorespiratory fitness during childhood track into adulthood and are associated with cardiometabolic risk factors in childhood or adolescence, particularly obesity, blood pressure, insulin resistance and their clustering
the beneficial effects of PA and CRF on children’s and adolescents cardiometabolic risk factors e.g. BP and insulin resistance may be what?
independent of any favourable effects on adiposity
why is the association between PA and adiposity complex?
because excessive energy intake rather than decreases in PA seem to be at the root of increases in obesity among the young
obesity increases do lead to decreases in PA which will contribute to the perpetuation of an unbalanced energy in energy out vicious cycle throughout the life course
what does the favourable impact that PA and/or CRF have on other cardiometabolic risk factors mediate?
most of their beneficial effects on markers of arterial aging in children and adolescents
the associations with these cardiometabolic risk factors also seem to mediate the benedical association between the cumulative or lifelong exposure levels to lower PA and CRF levels with markers
