Lecture 17 - Adolescent Nutrition Flashcards
what are the adolescent years
period of life between 11 and 19 years
energy and nutrient needs to support physical growth in adolescence are second only to those during
infancy
during adolescence they are more independent with
food choices
- they are not fed, they eat
- choose to go out, not sent out to play
what are the social pressures in adolescence
- body image
- alcohol
- drug use
pace of growth in adolescence …
speeds up abruptly and dramatically, significantly increase energy, protein and micronutrient needs
in adolescence, the sequence of change is ….
relatively predictable, but timing is highly variable
what is chronological age
out actual age, how old we are
what is biological age
more reflective of where we are in terms of growth and development, cells and tissues in the body
there are distinct growth patterns between
genders
growth and development during adolescence dictates
nutrition needs
sexual maturation is what driven
hormonal driven, affecting every organ in the body
what are the concerns during adolescence growth and development
under nutrition, over nutrition and micronutrient deficiencies
there are distinct differences in what in terms of body composition of males and females
differences in skeletal system, lean body mass and fat stores between genders
as much as what % of body weight is gained during adolescence
as much as 50% adult body weight is gained during adolescence
females gain a much larger % of
body fat
females need what % body fat for menarche
17%
females need what % body fat to maintain normal menstruation
25%
female body fat peaks between years
15-16
males gain more what than females
more lean body mass
males gain on average how many kg per year (during peak weight gain)
9kg per year
males have an average of what % body fat by the end of puberty
12% body fat
generally the adolescent growth spurt lasts about
2-3 years
females adolescent growth spurt begins at
9.5-14.5 years
males adolescent growth spurt begins at
11.5-16 years