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In Part 1 of this series, we thoroughly examined the truth about energy systems, their classification, specifics of each energy system, correct terminology used, and most importantly, how each energy system is interconnected and contributes to one another for energy provisions.

One of the more confusing aspects that continues to purvey is the role of fuel use during training, and even during recovery, and how intensity has large implications for these energy systems.

Many are discussing and even advocating basic programming ideas based on these systems without ever really thinking and knowing about how they work. This article will help set the record straight and examine the truth about energy systems.

Let’s get started with Part 2.

Energy systems within the framework of coaching and athletic development is always a heated topic, and there has been this very unsettling trend within social media and online articles discussing the best methods to incorporate these systems into programs. While this topic is critical to the improvement of athletic performance, implementation, and program design, the use of specific terms and application have been misinterpreted.

As times goes on, the staggering amount of self-proclaimed training and nutrition "experts" within the industry become more obvious. Many are discussing and even advocating basic programming ideas based on these systems without ever really thinking about how they actually work. There are way too many people who speak and write as though these energy systems are completely independent of each other.

Here’s the truth - and I know it may be shocking - but all these energy systems are not independent of each other. They never have been and never will be.

A learning curve is defined as the advancement in apprehension of a given subject. Coaching is essentially teaching, so a better understanding of how individuals learn movements and skills is paramount. Furthermore, combining knowledge of how individuals learn and improving your technique of delivering that information creates an enhanced environment geared toward progressive learning, teaching, and - ultimately - performance.

As a coach, you probably spend an awful lot of time and effort tinkering with the details of each workout. Whether it’s tweaking sets and reps, figuring out optimal lift percentages, or messing with rest periods, there are an almost infinite number of ways to alter, and hopefully improve, the quality and impact of each session.

Change of direction (COD) ability is a key component of agility. Biomechanics research can help us identify which factors lead to better COD performances.

Tendons tend to get most attention when they are injured.