Answer:
1 repetition maximum = 400 lb
Step-by-step explanation:
given data
weighs = 180 lb
lift = 320 lb
repetitions = 8
to find out
what is his estimated 1 repetition maximum
solution
we get here 1 repetition maximum that is express as
1 repetition maximum = w × (
) .................1
here w is weight lift and r is complete repetition
put here value we get
1 repetition maximum = 320 × (
)
1 repetition maximum = 320 × 1.25
1 repetition maximum = 400 lb