Kin 220 Lab quiz 2 Questions And Answers.

Define Work - Answer When a force acts upon an object to cause displacement of the object measured in Newton-meter Define strength - Answer Maximum amount of weight a person can lift for one repetition , expressed as 1 rep max or !RM Define Power - Answer Rate of work being competed in a unit of time i.e. joules/seconds = watts What are the two types of power? - Answer Absolute Power: rate at which work is completed regardless of the body mass expressed in Power= force x distance divided by time Relative Power: personal power mass or weight dependent power measured in watts What are the 3 types of muscle contractions - Answer - static contraction - maximal voluntary contraction aka MVC - Rhythmic contraction What is static contraction - Answer muscular contraction w/out range-of-motion; no movement occurs What is Maximal Voluntary Contraction - Answer 100% isometric-state contraction i.e. squeezing a fist What is Rhythmic Contraction - Answer Dynamic muscular contraction, with movement i.e lifting weights for reps Define Endurance - Answer The ability of the muscle to maintain a percentage of MVC over a period of time, or rhythmically contract over & over for a sustained period Define Fatigue index - Answer rate of fatigue onset; is a unitless measure higher FI number, the greater the rate of fatigue What are the conversions for metic system - Answer 1 inch= 2.54 cm 1 cm = .01 meters