People have used the terms flexibility and mobility interchangeably for years, but given that these two are very different, a push to change the rhetoric and separate these two has begun. We all know it is important to stretch. To stay loose and limber for whatever workout comes our way while also improving our posture and keeping us stable and balanced for those big lifts.
But static stretching and dynamic stretching work differently for us and while both work to lengthen and stretch out our muscles, it is important to really dive into the differences this causes for both mobility and flexibility. Flexibility deals with someone’s ability to move joints effectively through a complete range of motion to allow for a passive movement. Mobility is the body’s ability to move through that range of motion with control, which requires flexibility.
The key for both of these is actually stability. When we sat down with coach and fitness entrepreneur Don Saladino to discuss how to improve posture, he broke down for us the importance of stability. Stability equals strength and by combining flexibility with stability we come out with mobility.
Flexibility, to put it simply, is the quality of bending easily without breaking. It is the range of motion in a joint or a group of joints to move through a complete range of motion effectively. This typically allows a movement to happen passively, thus allowing us to hold a certain stretch without any pain in that joint or the joints surrounding it (1). This could be anything from holding a static stretch to bending down for something or getting out of bed. Flexibility varies from person to person given the differences in muscle length and can increase with exercise and stretching.
Mobility is the ability to move or be moved with ease. The key to longevity, mobility is the ability control the entire range of motion. This requires strength, also known as stability, as well as flexibility to improve that range of motion. This allows us to have total control in order to maximize all of our movements functionally and effectively to lift more without any unwanted pain or strain (2).
Isolated mobility is when a certain muscle or muscle group is mobile. This may work for sport specific movements, but overall mobility should be our goal. This is judged by how balanced your entire body is as a whole and is far more important than only being partially mobile. With overall mobility, you will be able to tackle any position or lift thrown your way to really maximize performance.
Many people are flexible, meaning they can hold a certain stretch for a long time and even put their legs behind their heads. But that doesn’t mean they are mobile. Muscles that are flexible may be trying to compensate for areas where stability is lacking. If stabilizer muscles are not strong enough, then we rely on our mover muscles to pick up the slack, resulting in pain or poor posture. This ends up limiting mobility (3).
Since flexibility is the muscles ability to be lengthened, that doesn’t solve our problem with range of motion. Performing a big lift requires our joints to be able to move that weight as effectively as possible and that ability to move through range of motion is where are desire for mobility comes into play. So, if flexibility plus stability equals mobility, then we need to both be able to lengthen our muscles and have the proper strength to support range of motion. Control is key here and that comes through strength, coordination of our muscles and the proper functioning of our stabilizers.
To start, it is important for us to work on both strength and balance to enhance our stability and control, as well as working on flexibility to ensure loose muscles that can lengthen to their optimal capacity. Through proper lifts and a solid stretching routine, whether static or dynamic, we can start to see this change really happen.
For mobility, we should focus on:
While flexibility and mobility may be used interchangeably, they are very different at their cores. Flexibility is the ability to move joints effectively through a complete range of motion, often times passively. Mobility is the body’s ability to move through that range of motion with control, which requires stability. Stability equals strength and building that base is equally as important to mobility as being flexible. A simple equation to remember: Flexibility plus stability equals mobility.
References
Source: https://www.menshealth.com/fitness/a35901065/mobility-vs-flexibility/