Coach Back

About Coach Back

Daniel Back is the founder of Jump Science.

How to Jump Higher

There’s a lot of information on this site and in the Jump Science posts on facebook and instagram. When I write, I try to give people actionable information. I hope […]

Speed Science: Low Heel Recovery

This is not a generic article recommending low heel recovery. In fact the aim here is to get people questioning the effect of this trend in the coaching of sprint […]

The Science of Sports Training

There is a sea of athletic development information on the internet nowadays. The overall quality has improved as more educated people have built websites and social media presence to combat […]

Specific Strength Training

KEY POINTS

Practicing and playing your sport is the ultimate specific training.
If the ultimate specific training is already in place, attempts at specific strength training can only be effective through […]

Eating More for Speed Performance

Question

Answer

Long Term Athletic Development

When people first begin training to improve their athleticism, they typically have some level of success in the first few months. Unfortunately progress tends to stop before too long. In […]

Dan Pfaff is wrong?

A quote from Dan Pfaff recently made the rounds through the athletic development community. Pfaff is obviously a great coach, and I do not intend to criticize him or judge […]

Get More Fast Twitch: The Overshoot Phenomenon

Muscle fiber type is one of those topics on which people love to make uninformed statements. You may have heard things like, “Heavy weights work those slow twitch fibers.” Or […]

Squat Depth

In the discussion on transfer of training, squat depth is a hotly contested issue with many opinions clouding the view. On one side many people testify to superior strength and […]

Biarticulate Muscles and Synergy

When looking at muscle function, people often look at one joint, consider the muscles that act on that joint, and identify the muscles that perform opposite actions as antagonists to […]

Speed Science

This is a video series on top speed. The videos will cover physics, biomechanics, sprinting technique, and training strategies. The first video covers the physics of top speed and the […]

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 […]

Why do athletes need to be flexible?

QUESTION: “I saw you say, like many coaches, that flexibility is underrated. I just wanted to ask what shaped your views and why you think that?

I understand that stretching has […]

Losing Weight to Jump Higher

QUESTION: “i purchased your program last year and my training has been on and off, but i’ve seem some great result following your program!
i couldn’t even touch the rim before, […]

Velocity Based Training

Key points

VBT is using velocity feedback to influence workouts.
Most explosive training is naturally velocity based.
Current trend is applying VBT concept to strength training.
VBT in strength training is […]

How Football Players Get Fast

This athlete who emailed me is reflective of a pretty common situation in football. Players are often more developed in the strength department and need a shift in the explosive […]

Great Athletes Are Strong

We can break down a person’s athletic ability into two fundamental factors. The first is raw strength. This is simply the maximum amount of tension that can be generated by […]

How to Squat CORRECTLY

“Simply by keeping my torso upright and knees wide like you recommended, I can now squat 325 at a bodyweight of 175. I can also pretty easily dunk a basketball. […]

Evolution or Genetic Variety?

Watch the video on antibacterial drug resistance in E. coli.

Some people use this type of experiment as the chief evidence for darwinian evolution.

Here’s my beef. Bacteria have sources of genetic […]

Sprain your ankle to jump higher?

I received an email with some great examples of the value of rest and questions about the influence of conditioning…

Question: “Hi Coach Back… I had great success with your original […]

Prevent Muscle Cramps