Movement assessment

You may also encounter movement assessment under names such as "body condition check," "movement screening," or "postural assessment." What these approaches share is that they examine mobility (the range through which a joint moves), stability (the ability to maintain control of the body's center while moving), and left–right balance through a set of prescribed movements. Unlike fitness tests that produce numerical results, they focus on observing the form and flow of movement.

Representative systems include FMS, SFMA, McKenzie MDT, and PRI, each with somewhat different priorities shaped by its developers. They share the idea of viewing the body as an interconnected movement system rather than examining each area in isolation.

• Functional Movement Screen(Functional Movement Screen) — Seven basic movements, such as a deep squat and single-leg support, are scored from 0–3. It offers an at-a-glance view of left–right differences and compensatory movements, so it is often used as a check before starting exercise.
• Selective Functional Movement Assessment(Selective Functional Movement Assessment) — For people who already have discomfort, this system starts with broad movements and breaks down only the necessary components to identify where movement restrictions come from. A defining perspective is that the painful area and the area restricting movement may be different.
• McKenzie Mechanical Diagnosis and Therapy — Repeated bending or straightening of the lower back is used to observe which direction eases symptoms. Exercises are then guided by that direction.
• Postural Restoration Institute(Postural Restoration Institute) — This system examines breathing and postural patterns, starting from the premise that the body is inherently asymmetrical from left to right.

Exercise assessment broadly refers to observing and quantifying movement, fitness, and performance using set procedures. Choosing a test starts with the question, "What do I want to find out?" A jump test shows jumping ability, while a cycling test shows performance on a cycling task, so they cannot substitute for one another.

Results are affected by sleep that day, familiarity with the movement, motivation, equipment, and the environment. It therefore makes sense to view a single number as an observation obtained under those conditions, rather than as an unchanging personal characteristic. Comparing numbers measured with different equipment as though they were on the same scale can make differences in measurement methods look like changes in the body, so it is helpful to repeat measurements using the same method. You can read more about these terms in Test accuracy and measurement terminology.

Quality of movement refers to how smooth, efficient, and controlled a movement is. It cannot be expressed as a clear-cut number in the same way as an angle or a time, so some observer subjectivity is involved. Rather than comparing someone against a single predefined "correct posture," it is more appropriate to look at how comfortably that person performs the task.

From a motor control perspective, movement consists of patterns learned by the nervous system through repetition and feedback. New movements are learned in relation to the tasks and situations practiced, so what is seen in one situation does not necessarily appear in the same way in another. Related information can be found in Movement variability and Motor learning.

Another perspective is Relative flexibility. Because movement follows the path of least resistance, the stiffer of two neighboring joints moves less, while the more flexible one moves to make up the difference. A movement characteristic seen in one area is therefore better understood when the condition of neighboring joints is considered as well.

An assessment score is not a diagnosis, but "a starting point for getting to know your body." The body is not naturally perfectly symmetrical, and a difference does not automatically mean there is a problem.

• Use it as a way to observe. Rather than focusing on scoring, use it to notice differences you might not usually feel, such as "My right ankle is stiffer" or "I wobble more on the left when standing on one leg."
• Repeat it under the same conditions. Repeating it at a similar time of day and in a similar physical state makes changes easier to compare.
• Choose a test with a purpose. Assessment is more useful when you know what you want to find out.
• Interpret it with a professional. It can help to discuss how to apply the results to exercise with someone who understands your physical circumstances and goals.