Introduction: Words Matter in Sports Training
In strength and conditioning, there are a few terms that get tossed around like they’re interchangeable. “Agility” and “Change of Direction” (COD) are two of them. But they describe different concepts and treating them as the same can result in less effective training outcomes, leaving gaps in your program.
To train athletes properly, we need to define our terms and have a deeper understanding of the training principles. This blog is for parents, coaches, and athletes looking to better understand what smart, purposeful training looks like. We’re going to break down the difference between COD and agility, why it matters, and how we can train the skills that actually show up on game day.
What is Change of Direction (COD)?
Change of direction is a physical skill. It happens in a planned environment. The athlete knows what movement is coming next. A common example is sprinting forward and then cutting at a 90-degree angle. Other patterns might include 45°, 135°, or even 180° direction changes. Think of cone drills or zig-zag sprints. These also include all of the various “agility” ladder drills.
According to Nimphius et al. (2018), COD training is important because it builds the physical foundation: strength, speed, and mechanical efficiency. You can’t react quickly if your legs can’t absorb and produce force. This is where resistance training, plyometrics, and sprint mechanics come in. COD drills develop the ability to decelerate, absorb force, and re-accelerate in a new direction without overcomplicating the drill with cognitive skills.
But remember: COD is pre-planned. There’s no external stimulus. The athlete isn’t reacting to a ball, a defender, or a sudden cue/change in their environment.
What is Agility?
Agility is more than just physical movement. It includes the brain. Shepard and Young (2005) define agility as “a rapid whole-body movement with change of velocity or direction in response to a stimulus.” This stimulus might be visual (seeing a defender), auditory (a coach’s call), or even tactical (recognizing a play pattern).
This definition helps us understand why agility training has to involve a decision. It’s not just about cutting fast; it’s about cutting fast in response to something.
Agility requires:
- Sensory processing (seeing/hearing/feeling something)
- Decision-making
- Physical execution
Dr. Sophia Nimphius’ work reinforces this model. Her research (Nimphius et al., 2018) shows that the best athletes aren’t just strong—they’re also fast thinkers. Reaction time and accuracy matter just as much as physical power.
Why the Distinction Matters
If you’re only training COD, you’re missing half the puzzle. COD builds the engine; agility trains the driver.
There is some crossover: training linear speed helps COD; COD helps agility. But they aren’t the same. As Ian Jeffreys explains in Gamespeed, just because an athlete is fast in a straight line or through a cone drill doesn’t mean they’ll be fast in a chaotic game situation. Games are messy. They’re unpredictable. That’s where real agility lives.
The Three Pillars of Agility Training
To train agility properly, we need to hit three key areas: technical, physical, and cognitive.
1. Technical Components
This is about how an athlete moves. Do they enter and exit the cut with good angles? Are their feet placed well under their center of mass? Can they lower their body to stop and re-accelerate? These mechanics matter.
Lee Taft, known as the “Speed Guy,” emphasizes proper foot placement, hip positioning, and body lean. Teaching these fundamentals can drastically reduce injury risk and improve efficiency.
2. Physical Components
This includes:
- Lower body strength (squats, lunges, deadlifts)
- Reactive and elastic strength (plyometrics like bounding, hopping, and skipping)
- Linear and lateral acceleration
- Trunk and upper body control (core strength and posture)
Carmen Bott, a Vancouver-based expert in youth athletic development, often reminds coaches not to treat kids like mini-adults. The training must be age-appropriate and focused on long-term growth. Physical literacy builds over time. We don’t need to rush to the finish line.
3. Cognitive Components
This is where real agility lives. It’s about speed and accuracy in decision-making. Athletes must scan the field, anticipate outcomes, recognize patterns, and apply their knowledge of the game.
Examples of drills:
- Light or sound reaction drills
- Partner-based change-of-direction games
- Sport-specific decision-making games (e.g., reacting to a defender’s movement)
These drills must replicate game-like stimuli. This is supported by the research of Sheppard and Young (2006), who found that perception-action coupling is a key piece of effective agility training.
Putting it All Together
So, how do we use all of this in training?
Start with age-appropriate, focused training blocks. For younger athletes, focus on movement literacy—running, jumping, landing, and shuffling. Incorporate basic strength training as a supplement. Add structure, but don’t over-coach. Let them play. Use games to develop reaction skills. This is what practice is for.
As athletes mature, gradually increase the physical load: add resistance, demand cleaner technique, and layer in more complex decision-making tasks.
And always remember: just because something looks fun or hard doesn’t mean it’s helping. There must be a purpose behind every drill. It’s not about random chaos—it’s about structured challenge.
Conclusion: Purpose Over Randomness
Agility and change of direction aren’t interchangeable. One is reactive, the other is planned. Both are important, but they serve different roles in athletic development.
As coaches, parents, and athletes, we must demand better than random drills and flashy Instagram workouts. True development comes from purposeful, well-coached training that respects how kids learn and grow.
References
Jeffreys, I. (2017). Gamespeed: Movement Training for Superior Sports Performance. Human Kinetics.
Nimphius, S., Callaghan, S. J., Spiteri, T., & Lockie, R. G. (2018). Change of direction deficit: A more isolated measure of change of direction performance than total 505 time. Journal of Strength and Conditioning Research, 32(10), 2835-2841.
Sheppard, J. M., & Young, W. B. (2006). Agility literature review: Classifications, training and testing. Journal of Sports Sciences, 24(9), 919–932.
Taft, L. (n.d.). Coaching Resources. Retrieved from https://leetaft.com/blog/
Simplifaster. (n.d.). Blog articles. Retrieved from https://simplifaster.com/articles/category/blog/