adolescence and puberty Flashcards
events
lifestyle dramatically changes during adolescence- so does biology + they interact
move away from family structure- changes in diet
may develop mental health problems
may have children
universtity/ work
c
critical period
peak height velocity
lots of chnages occur that will have life long lasting effects
increase in growth velocity
(velocity curve based on cross sectional data, doesnt reflect individual data as it doesnt show peaks)
fat distribution
changes in fat distribution starts at around 14/15 and ocucurs even more when going into adulthood
android- males
gynoid- females
android is usually worse for health as can clog up arteries and mvoe around the body
worst place to store adipose tissue- apoptopic fat- stored around organs
BMI across life
worst cardiometabolic risk comes form going from normal weight to obese
high BMI at young age isnt always due to fat- normally subcutaneous fat (not as harmful)
increases in fat during puberty are usually visceral fat around organs which is harmfuk
maturation
growth- structure- formation of new tissue
maturation- function- metamorphosis of the biological and chemical nature of tissue
puberty= developmental phase resulting in the child reaching reproductive capacity covering approx first half of adolescence
measuring maturity
processes- sexual maturaition, skeletal maturation, dental maturation
events- PHV, menarcher, spermache, voice breaking
maturity indicators
changes in parts of the body that is characteristic of the body from immaturity to maturity
1. universal
2. sequential
3. discrimination
4. reliability
5. validity
6. completeness
sexual maturity
best way to look at maturation
tanner’s stages ( in notes)
stage 1-5
pubertal stages
P1= B1/G1 + PH1= pre pubertal
P2= B2-B4/G2-G4= pubertal
P3=B5/G5 +PH5= post pubertal
B= breast PH= pubic hair G= genitals
status quo
method used for comparing, takes a representative sample from the population throughout adolescence and asks indiciduals if they have reached menarche
prospetcive method- requires longitudinal observation
retrospective- most commonly used to ask when females started period (may be recall bias)
skeletal maturity
occurs in everyone- primary ossification to secondary ossification to fusion to completion of growth
X rays and radiographs can be used to measure
score bones against pictures and compare using graphs showing bone age amnd chronological age
can have different biological age to chronological
can calculate relative skeletal age by subtracting chronological age from skeletal age- neg value= slower pase of skeletal maturation
dental maturation
different teeth are expected to come in at different ages
can assess against standards to find dental age
considerations of maturity
- maturational year /= chronological year
- discrete indicators of continuous processes (one time snapshot)
- different processes under different biological control
- different processes occur at different rates
- maturation rates differ between boys and girls
- size /= maturation