Coach Back

About Coach Back

Daniel Back is the founder of Jump Science.

Recovery During a Hard Season

QUESTION: “hey I need some advice… So I’m homeschooled and my high school team plays a lot of games … we often play back to backs and tournaments we can […]

Strength Training for Speed and Vertical Jump

There is a lot of disagreement on the role that strength training plays in athletic development. Some say squatting is the only thing you need to do to increase your […]

Jumper’s Knee

The stretches and exercises he shows to avoid and/or recover from the jumper’s knee are the best. I had a really bad jumper’s knee, but 1 month later I didn’t […]

Jump Science University: Muscle Tension

The video series below covers biomechanical and physiological factors that influence muscle tension. Along the way you get a good amount of university level anatomy and physiology education. With this […]

Achilles Strength (Bosch is wrong)

In a popular athletic development book, the author, Frans Bosch, cites force measurements in the achilles tendon of 3-6 x body weight (BW) in sprinting and 8-10 x BW in […]

Long Jump Case Study

In the athletic development field coaches often share general philosophies, models, ideas, etc. Someone might talk about things they consider when making decisions, but not share any actual data or […]

Hamstring Health

Hamstring injuries are the source of much vexation in the exercise field. While the human body and human movement are extraordinarily complex, and a person may possess some unique characteristics […]

Speed Training Periodization

QUESTION
…The main thing between me and my dream of playing D1 football is my physical abilities when it comes to speed and agility. I am not slow (4.65 40 hand-time), […]

Striking The Ground in Sprinting

QUESTION
I read somewhere that a major difference between people who are considered fast and those who aren’t lies in technique. It was written there that some of the people when […]

Light vs Heavy Eccentrics and Structural Strength

QUESTION
I’ve been reading the book, Triphasic Training, by Cal Dietz… he trains each dynamic action separately starting with the eccentric phase of the movement. He uses submaximal and supramaximal slow […]