age and sex related differences Flashcards
how much earlier do girls enter puberty compared to boys?
2 years
age of maximum rate of growth
peak height velocity
girls: 12 years old
boys: 14 years old
increased risk to injury
at birth ____% of body weight is muscle mass
25%
at adulthood, about ____% of body weight is muscle mass
40%
preadolescent children tend to increase strength by approx. ____-_____% with structured training
30-40%
muscle mass growth typically peaks about _____ year after peak height velocity
1 year
is 1rm testing safe for children?
as long as they are warmed up and had load progression.
is there a difference between boys and girls before puberty?
no difference in height, weight, body size, and strength
is strength relative to cross sectional area the same for men and woman?
yes, men and women have similar fiber type distributions. men tend to have bigger muscles and express higher power (absolute and relative to body weight)
absolute strength: women tend to have ___ strength of men
2/3rds
relative to body weight:
lower body vs upper body
females and males similar lower body strength
males have stronger upper bodies
resistance training is based on _____ and not on sex
sport
who is more likely to sustain an acl tear?
women- 6x more likely
what contributes to the female athlete triad?
- energy availability
- menstrual function
- bone mineral density
weightlifiting performance typically decreases ____-___% per year after age 30
1-1.5% per year
endurance usually peaks in 30’s
