Development in adolescence Flashcards
Adolescence
- derived from Latin word adolescence which means to grow in maturity or grow into adulthood
- the individual changes from being child-like to being adult-like
- a period of self-examination and emerging identity
- physical onset of adolescence is marked by the changes that occur during puberty
Puberty
Biological events leading to adult-sized body and sexual maturity
Rate of development
At puberty is more raped than at any other time of life except infancy
Onset:
- girls 10 years
- boys 12 years
Changes during puberty
- height: 10-12 inches
- weight: 50-75 lbs
- influencers: hormones, genetics, nutrition
Growth hormone
- stimulates cell replications and cell growth
- targets many cells in body. Preferential to bone and muscle cells
Testosterone/estrogen
- stimulates sexual maturity
- primary sex characteristics: reproductive organ development
- secondary sex characteristics: external signs of reproductive development
Girls
- peak growth spurt achieved around 10-13.5 years
- peak muscle performance spurt 11-14 years
- pelvis and pelvic outlet widens to ready for child-bearing
- increased fat deposition
Boys
- peak growth spurt achieved around 14 years
- peak muscular development spurt around 16 years
- increased growth in shoulders
- increased muscle deposition
- adult stature reached around 15.5 years
Hormones (genetic)
Heredity contributes significantly to the timing of biological changes that occur in puberty
Hormones (nutrition)
- adipose tissue stimulates start of puberty
- adipose tissue delays the start of puberty
- during peak growth spurt boys require 2700 cal/day and girls require 2200 cal/day (dependent on body comp, growth rate, and activity level)
End of puberty
- no distinct, agreed upon end of puberty
- possible markers: closure of epiphyseal plates and maximum height/adult stature achieved
Fine motor skills
- negligible development in adolescence
- smooth, fluid arm and hand movemnts
Gross motor skills
- refined calibration of movements
- refined and matured bilateral coordination of skills
Motor skill development
- changes in motor skill performance correlate with physical growth
- differences in physical performance for both genders are significantly affected by training
Exercise guidelines
Per CDC for teens
- 60+ min of daily physical activity
- 3 days/week mm strengthening
- 3 days/week bone strengthening
- 3 days/week aerobic activities