Strength and conditioning professionals spend a lot of time designing programs. This requires putting a considerable amount of thought into annual periodization. Every year we take a look at the competitive calendars of the teams or individuals we work with, map out our macrocycle and mesocycles, and then sit down with the sport coach to determine what a typical microcycle might look like depending on the time of the year. This is common practice in strength and conditioning and something that we'd never get away with ignoring.
Personally I've committed a significant amount of time to making year plans for the teams I work with at the University my company is contracted, but I also spend a lot of time playing and thinking about team sports. These experiences have led me down the path of questioning why it's not common practice to have a periodization schedule for skill acquisition and if we did, what that might look like.
One evening while I was doing some of my own experimenting on the basketball court I tweeted this:
It was off the cuff, but the more I look at it, the more I like it as a starting point for an annual skill acquisition periodization model.
If you aren't familiar with the research terminology of skill acquisition science I will try and better explain what I mean. I think mostly in terms of the game of basketball nowadays so I will use that as a reference, but I'm hoping you can easily extract the principles and apply them to any other sport you're interested in.
Blocked practice can be thought of as any skill acquisition prescription that is delivered without any variability. This, as it pertains to the game of basketball, would look a lot like stationary ball handling drills repeated in sequence, shooting on a shooting gun, or shooting free throws with the same routine. Variable practice, well... has variables to it. There are a lot of different ways to add variability to common drills in any sport, but the purest form of variable practice is free play. In the basketball community, pick up basketball is probably the purest form of variable practice we can engage in. The key to unlocking our potential as team sport athletes, I believe, lies in understanding how much of each practice style we should be engaging in at any given time of year.
Merbah and Meuelmans (2011) explain in a review published in The Journal of Belgian Psychological Science that "studies that have explored the contrast (between variable and blocked practice) generally show that, while the random practice condition leads to poorer performance during acquisition than the blocked practice condition, it yields superior performance on a retention or transfer test, a phenomenon that is commonly called the contextual interference effect." This conclusion is shown over and over in the literature and is an important phenomenon we must understand if we're to optimize our prescriptions in the skill acquisition arena.
Variable practice, over and over again, has been shown to be considerably more effective at delivering transferable qualities to the competitive arena even though during the actual practice it elicits considerably lower success rates. Unfortunately, outside of organized pick up games, most training done in the off-season in basketball circles is delivered almost purely in the form of blocked practice. This isn't to suggest that blocked practice is a waste of time. It certainly has a time and a place. It's a coach's job, however, to prescribe it when it's most useful and prescribe variable amounts of information whenever possible.
My opinion is that blocked practice is incredibly useful in these scenarios:
1. When attempting to learn a novel skill. In team sports it's rare that brand new skills emerge during free play. Athletes in team sports typically compete to their strengths and utilize the skills they've already practiced in a controlled environment. If an athlete is trying to learn how to do a spin move or euro step it's probably best that their first attempts don't come during a pick up game.
2. When an athlete wants to work on something that didn't go well during free play. I've found this to be one of the most useful situations for blocked prescription. Highly skilled performers will ALWAYS remember how and when their fine motor skills failed them during the most recent competition. Coaches who are responsible for in-season individual skill sessions would benefit from understanding or even asking what those things are/were. Missed shots that athletes typically make, attempted hand exchanges that result in a turnover, or any other skill that an athlete relies on consistently during competition should be drilled through block practice as soon as the next practice in order to restore the athlete's confidence in said skill. If they are already relying on it during previous competitions you'd better bet that they'll be reliant on it again. You'll want to make sure they have confidence in it when they do.
3. When training a skill that requires coordinated execution of multiple moving parts. This scenario is similar to learning a novel skill, but would refer to something such as learning a new offensive play/set or defensive strategy as a team. These obviously require a lot of different moving parts, so implementing the details in a controlled environment is important before athletes are turned lose and forced to process the information that comes from an unpredictable environment like free play. It's worth noting, however, that eventually these things have to be drilled and allowed to become chaotic (variable practice) or the practice will never reach it's potential for transfer to the competitive landscape.
4. Pre-game There's a reason that, at the highest levels of competition, you see athletes working on very specific skills during pre-game preparation. This is probably the best time to get very specific with a blocked practice approach and work on things that the athlete will need in the hours that follow.
The above scenarios are just a few that I've found useful for the implementation of practice in a controlled environment. It's my opinion that the implementation of blocked practice should still be used sparingly, especially in the off-season. Now you're probably thinking that you can't JUST rely on free play and pick-up games for the development of your team sport athletes, so how do you use the tenets of variable practice to optimize learning? To fully deliver a method of practice in that regard would probably require a whole different blog post, but the simple answer is to use a constraint based approach that forces the athlete to process information while attempting to acquire a skill they'll need during competition. I commonly use the phrase, "No dead-brain activity." This type of prescription can be wildly misunderstood and has potential to get gimmicky. Coaches that understand how to do it well, however, get a considerable amount of transfer from their athletes. In the basketball world, I can't think of a group that has taken more flack for this style of training than I'm Possible Training (IPT). This group has taken a hard line of implementing almost NO blocked training with their athletes. Just about every drill they use seems to have a prop or some kind of constraint included in order to make the participant's environment more chaotic. Those who don't understand skill acquisition science see these things as gimmicky, but I personally believe that a lot of what they're doing aligns itself with the literature. It's important to remember that the goal is transfer of training, not perfect practice. If you have interest in learning more about how exactly to add more variability to your practice sessions, the books below are must reads.
I'm hoping the tweet I made regarding the annual plan for skill acquisition in any sport will age well. An off-season should consist of high volumes of variable information. Concise and efficient prescriptions programmed with learning new skills and developing weaknesses in one's game are necessary, but athletes should eventually be cut loose to figure out how to implement them during free play. Coaches should lean less on blocked practice sessions during this time and work hard to find unique ways to implement more variable information in training sessions. These methods will frustrate your athletes and lead to much more failure during training, but will ultimately maximize the transfer of their training.
Once athletes are in-season and have less time for free play because of the time allocated to learning new offensive sets, defensive strategies, special plays etc. coaches will have to work even harder schedule some chaos into the practice plan each week. This could include working through more in-game scenarios with specific constraints, making time for 1 on 1s or 3 on 3s in basketball, 1 on 1s or 7 on 7 in football, or simulated scrimmages in baseball. All have value while athletes are in-season.
I'm hoping coaches don't read this and think that blocked practice is worthless. I still believe it has the most value immediately before or after a competition. Asking athletes, specifically, what they want to work on immediately before a competition can be valuable when trying to instill confidence in them. Likewise, working on something immediately after competition that didn't go well can help restore confidence in them before the next competitive event.
If you take anything from this writing I hope it's that you should be leaning less on repetitive, dead brain activities to develop the skills you want your athletes to acquire and trying to find unique ways to get them processing information during a session. I can assure you, the scientific community will back you up!
As always, thank you for reading!
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Caleb Heilman, MS, CSCS, USA-W
Owner, Heilman's Performance
Director of Human Performance, Minot State University
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