«Rather than going for reps, time your exercises or change the tempo so lifts in the eight - to - 10 rep range adhere to a three - second eccentric movement and two - second concentric movement to total five seconds. (womenshealthandfitness.com.au)
As mentioned earlier the more force you are able to absorb and decelerate the more powerful you are at performing concentric movement. (rugbystrengthcoach.com)
Example: The box squat is done by sitting back on the box (static) overcome by explosive concentric movement (dynamic). (t-nation.com)