Coach Back

About Coach Back

Daniel Back is the founder of Jump Science.

Skill is Specific (speed ladders and balance exercises)

What carries over to what? That is one of the biggest questions in training athleticism. There are a million exercises, a million ways to get tired, a million cool things […]

How to Get Eccentric Strength

Does lowering the weight slowly focus on eccentric strength?

First, does specific eccentric strength even exist? We classify muscle contractions as eccentric, isometric, and concentric. But physiologically is there any difference? […]

Force vs Technique: Knee Bend

Force has a big influence on technique. A lot of athletes and coaches get caught up in focusing on technique as a way to improve without realizing that producing more […]

Force vs Technique: Acceleration Angle

Force has a big influence on technique. A lot of athletes and coaches get caught up in focusing on technique as a way to improve without realizing that producing more […]

Does How High You Jump Matter?

The problem with using vertical jump as a measure of athleticism is it has no time component. Some people can spend a half second or more on the ground generating […]

Beware of the Explosion Principle

Be careful not to completely remove volume from your training. It’s easy to fall in love with the “explosion principle” or the “quality over quantity” concept, which lead people to […]

Advice for Volleyball Players

Email response to a professional volleyball player. 6 foot 10. 40-inch vert on short approach. History of some knee problems. Only a 10-week off-season.

“Ok, you are definitely correct to not […]

Sprinting for Non-Track Athletes

Got a question about distances for sprinting for someone in a team sport, not track and field. One of the things mentioned was using short sprints, 30m for example. The […]

Are you Wasting Your Time?

Too many athletes waste time and effort on things like general fitness workouts, six different types of core training, stuff that looks cool or is just really hard, sport-specific training, […]

Why Strength Training Works

The owner of MeisterMMA shared a Jump Science facebook post about the value of strength training. He got a response to that post questioning if heavy lifting has sport-specific adaptations, […]