Most young athletes train conditioning and call it speed. The two are close to opposites. What actually moves a sprint time, and what only makes you tired.
Ask a fifteen-year-old how they are working on their speed and you will usually hear about a session that left them wrecked. Suicides on a court, hill repeats, a shuttle run that went until someone was sick. That session builds something real. It is not speed.
Speed is a skill, not a punishment
Sprinting fast requires putting large force into the ground in a very short window, in good positions, while fresh. Every one of those requirements is destroyed by fatigue. If an athlete is tired enough that their times are dropping off, the session has stopped training speed and started training their ability to run slowly for a long time.
That is why genuine speed work looks almost lazy from the sideline. Short efforts, long rests, and a coach ending the session while the times are still good. It feels like doing too little, right up until the athlete gets timed.
The three things that actually move the number
- Force. A stronger athlete has more to put into the ground. This is what the gym is for and there is no way around it.
- Rate. Producing that force fast enough to matter inside a ground contact, which is what jumps, throws and plyometrics train.
- Position. Where the body is at each contact, and how it is organised. This is coachable and it is usually the quickest win available to a young athlete.
Acceleration and top speed are also different skills with different positions. Most field and court sports live in the first ten to twenty metres, so an athlete who only ever runs 60s at three-quarter pace is training for a race they will never actually run.
What we see most often
The most common limiter in a young athlete is not effort or willingness. It is that they have never been strong enough to hold a good position at speed, and never been fresh enough in a speed session to learn one. Those two problems reinforce each other, and both are fixable inside a season.
The second most common is volume. An athlete attached to three teams has no fresh legs to do this work on. You cannot bolt speed training onto a week that is already full and expect the good version of it.
How to structure it
- Speed first in the session, on the freshest legs available, never tacked on at the end.
- Short distances, full recovery, and stop when times drop off rather than pushing through the drop.
- Two quality exposures a week beats five tired ones, every time.
- Keep the gym work going alongside it. Speed sits on top of strength, it does not replace it.
- Time it. Perceived effort is a terrible measure of whether anything actually changed.
Where conditioning belongs
None of this means the hard running session has no place. Repeated-effort capacity matters in every sport played at MTE, and there is a session in the week whose job is to be uncomfortable. The mistake is not doing it. The mistake is doing it, calling it speed work, and wondering in September why the 20-metre time has not moved since March.
Separate the two, give each one its own slot and its own measure, and both improve. Blend them and neither does.

