What the Functional Movement Screen Reveals About Your Body

The Functional Movement Screen (FMS) is a systematic assessment tool that evaluates seven fundamental movement patterns: the deep squat, hurdle step, in-line lunge, shoulder mobility, active straight leg raise, trunk stability push-up, and rotary stability. Each pattern is scored on a 0–3 scale based on quality of execution, compensation, and pain. Developed in the 1990s by physical therapists Gray Cook and Lee Burton, the FMS provides a standardized way to identify movement deficiencies that underlie common injuries. Unlike diagnostic tests that seek pathology, the FMS focuses on how the body moves in basic patterns, flagging asymmetries, instability, and mobility restrictions. Research by Kiesel et al. (2007) demonstrated that athletes with a composite score of 14 or lower face a significantly elevated injury risk, making the FMS a powerful tool for proactive injury prevention. The screen is not a substitute for a clinical exam, but when used correctly, it gives coaches and clinicians a reproducible method to detect movement breakdown before it leads to tissue damage.

The value of the FMS lies in its ability to objectively quantify movement quality. Each of the seven tests targets a specific element of motor control, range of motion, and stability. For example, the deep squat assesses bilateral lower body mobility and core control, while the trunk stability push-up evaluates anterior chain stability and spinal control. The rotational stability test examines the body’s ability to transfer force across the midline. By isolating these patterns, the FMS reveals exactly where the movement chain breaks — whether it’s tight calves limiting ankle dorsiflexion, weak glutes causing hip instability during the hurdle step, or poor thoracic rotation compromising the lunge pattern. This granular insight allows practitioners to design prehab interventions that address the root cause rather than just the symptom.

Why Prehabilitation Demands Individualization

Prehabilitation — or prehab — is the proactive practice of preparing the body for the demands of sport through targeted exercise that corrects underlying deficiencies. Unlike rehabilitation, which responds to injury, prehab anticipates vulnerabilities and strengthens them in advance. A generic “injury prevention warm-up” that includes a set of common stretches and stability exercises may benefit groups, but it lacks precision. Because every athlete moves differently, a program designed without screening data will either overcorrect areas that are already adequate or undercorrect real deficits. When the FMS is integrated into prehab design, the program becomes specific to the individual’s unique asymmetries and movement errors. Studies report that customized prehab based on movement screening can reduce injury rates by 30–50% in collegiate and professional athletes.

The mechanism behind this reduction is straightforward: correcting a specific asymmetry, such as a 1-point difference in shoulder mobility between the left and right sides, restores balanced loading across the joint. Without correction, the athlete compensates by altering movement patterns elsewhere, leading to cumulative overuse. Prehab built on FMS data directly addresses these compensations early. The result is not only fewer injuries but also more efficient movement, as energy wasted on compensations is redirected into performance. For example, a baseball pitcher with an active straight leg raise asymmetry may have limited hamstring flexibility on one side, causing a compensatory hip tilt that loads the lumbar spine. Corrective exercises like supine hamstring belt stretches and hip flexor releases restore symmetry, reduce back strain, and improve throwing mechanics indirectly.

The Direct Benefits of Combining FMS and Prehab

  • True Personalization: The FMS tells you exactly which movement patterns are compromised. A deep squat score of 1 caused by limited ankle dorsiflexion demands tibial mobilization and elevated heel work, while the same score from tight hips requires hip capsule stretches and deep squat holds. The exercises differ completely, and the FMS makes that distinction clear.
  • Early Risk Detection: Asymmetries and low scores often precede injury. A side-to-side difference in shoulder mobility frequently predicts shoulder impingement in overhead athletes. Detecting this asymmetry during a screening and addressing it with sleeper stretches and banded external rotations can prevent weeks of lost training time.
  • Performance Gains: Efficient movement allows the body to produce and transfer force better. Correcting a rotary stability deficit through cable chop variations and quadruped knee drives can improve rotational power in golf, tennis, or combat sports. The athlete experiences enhanced performance as a byproduct of improved movement quality.
  • Measurable Progress: The 0–3 scoring system provides a clear metric. Re-screening every 4–6 weeks shows whether the intervention is working. If a score improves from 1 to 2, the prehab is effective. If it remains stagnant, the practitioner can adjust the exercises or intensity. This closed-loop feedback keeps the program dynamic.
  • Informed Load Management: Combined with training load data and subjective readiness, the FMS helps coaches decide when to push and when to pull back. An athlete with a composite score of 12 and high training volume is a high-risk profile that warrants a prehab emphasis before increasing intensity. The FMS becomes part of a comprehensive monitoring system.

Building the Prehab Program from FMS Scores

Designing a prehab program using FMS data follows a logical sequence: assess, interpret, target, and reassess. Each step requires attention to detail and clinical reasoning. Below is a practical guide for practitioners.

Step 1: Administer the FMS Correctly

The screening must be performed by a certified practitioner using the official test kit to ensure consistency. Each test is repeated three times, and the best score is recorded. Pain provocation tests during the screen — indicated by a score of 0 — require referral to a sports medicine professional before starting prehab. The athlete should perform a brief warm-up (5–10 minutes of light cycling or foam rolling) to standardize tissue readiness. Conduct the screen in a quiet, well-lit space where the athlete can move freely. The official test kit includes measured blocks and dowel rods that standardize test positions, reducing inter-rater variability. For reliable results, follow the protocol outlined at the official Functional Movement Systems website.

Step 2: Interpret Results Systematically

Focus on three data points: asymmetries, low scores (1 or 0), and composite score ≤14. Asymmetries are the highest priority because they indicate compensation that can lead to overuse on the dominant side. A one-point difference between left and right on any test should trigger immediate correction. Next, address scores of 1 — these movements are completed but with measurable compensation, indicating mobility or motor control deficits. Finally, a composite score ≤14, even without notable asymmetries, signals a generalized movement quality issue that requires comprehensive prehab. Research from Bock et al. (2016) indicates that asymmetries contribute more to injury risk than symmetrical low scores, so prioritize them first.

Step 3: Design Targeted Corrective Interventions

The FMS comes with a corrective exercise matrix that links specific deficits to appropriate exercises. The hierarchy is: fix mobility first, then stability, then re-integrate the full movement pattern. Below are specific exercises for each FMS test, chosen based on common underlying causes.

Deep Squat Corrections

  • Ankle dorsiflexion limitation: Wall ankle mobilization with knee-to-wall touches, band-distracted ankle rocking, and heel-elevated squats. Perform 2–3 sets of 10 reps, focusing on gaining range.
  • Hip mobility restriction: Deep squat holds with elbow prying (10–15 seconds), hip capsule stretch (90/90 position), and frog stretches for adductor flexibility.
  • Thoracic spine extension: Open books (thoracic rotation on hands and knees), foam roller extensions, and cat-cow stretches.

Hurdle Step Corrections

  • Single-leg balance deficit: Single-leg deadlift (bodyweight) with a slight forward lean, lateral band walks to activate glute medius, and single-leg stance on unstable surface (slow progressions).
  • Hip flexor tightness: Kneeling hip flexor stretch with posterior pelvic tilt, and supine figure-4 stretch for deep hip rotators.
  • Core instability: Dead bug exercises with leg extension, and side planks with hip lift.

In-Line Lunge Corrections

  • Thoracic mobility deficit: Side-lying thoracic rotation with legs stacked, quadruped thoracic extension rotation, and banded thoracic rotation.
  • Hip extensor weakness: Glute bridges with a 5-second hold at the top, single-leg glute bridges, and kettlebell hip hinges.
  • Ankle instability: Single-leg stance on a foam pad gradually adding perturbations.

Shoulder Mobility Corrections

  • Internal rotation deficit: Sleeper stretch (lying on side, pushing into floor with hand), towel stretch (pulling upward with a towel), and doorframe pectoralis stretch for anterior shoulder tightness.
  • External rotation deficit: Face pulls with band at eye level, banded external rotations with elbow at 90 degrees, and posterior capsule stretching (cross-arm stretch).

Active Straight Leg Raise Corrections

  • Hamstring flexibility: Supine hamstring stretch with a belt (pulling the leg independently), pike stretch with hands on a bench, and seated forward fold with a neutral back.
  • Anterior chain tension: Hip flexor lunges (kneeling stretch with glute activation), and supine contract-relax for the iliopsoas.

Trunk Stability Push-Up Corrections

  • Core stabilization: Dead bugs with controlled breathing, bird dogs (arm and leg extension from quadruped), planks with band perturbations (coach gently pushes the athlete to challenge stability).
  • Shoulder/scapular control: Scapular push-ups, serratus punches, and wall slides for scapular mobility.

Rotary Stability Corrections

  • Cross-body motor control: Cable chop variations (high to low, low to high), quadruped knee drives with opposite arm raise, and rotational medicine ball slams at low intensity.
  • Lumbar-pelvic stability: Paloff press with band resistance, and side plank with leg raise.

Perform corrective exercises before the main training session to take advantage of a fresh neuromuscular system. Aim for 2–3 sets of 8–10 reps or holds of 15–30 seconds. Quality is paramount; poor technique counteracts the benefit. Progress to more dynamic and loaded variations only when the movement pattern improves. Use mirror feedback or video to reinforce proper form.

Integrating FMS Prehab into Training Cycles

The prehab program must complement the broader periodized plan. During the off-season or preparatory phase, dedicate more time to corrective work. This could mean 15–20 minutes prior to each training session, or even a full session per week focused solely on FMS deficiencies. As competition approaches, volume decreases but exercises remain as part of the warm-up to maintain gains. For in-season athletes, a 5–10 minute “reboost” circuit twice per week can preserve improved movement patterns. Re-screen every 4–8 weeks to track progress. When an athlete achieves scores of 2 or 3 on all seven tests with no asymmetries, shift to a maintenance mode with fewer targeted drills, but continue to monitor for regression. The FMS should be integrated as part of an ongoing athlete monitoring battery alongside subjective wellness, load tracking, and performance metrics.

Common Mistakes in FMS-Based Prehab

  • Ignoring pain cues: If any part of the screen provokes pain (score 0), do not proceed with corrective exercises. Refer the athlete to a healthcare professional. Pushing through pain often worsens the underlying issue.
  • Overcorrecting: Attempting to address every score of 1 with a separate exercise is counterproductive. Prioritize the two or three most impactful deficits — usually asymmetries or the lowest composite contributors — and focus efforts there. Adding too many exercises reduces compliance and effectiveness.
  • Neglecting motor control: Mobility and strength are important, but many low scores stem from poor movement coordination, not lack of range. Use slow, deliberate exercises with explicit coaching. Cue the athlete on where to feel the movement and how to breathe.
  • Inconsistent re-screening: Without reassessment, the program becomes static. The body adapts, and new deficits may emerge. Schedule re-screens at regular intervals — monthly during heavy prehab, every other month during maintenance. Adjust exercises based on changes.
  • Using FMS as a one-time event: Movement quality fluctuates with training load, fatigue, and maturation. Incorporate FMS into periodic monitoring (e.g., at the start of each training block) to catch regressions before they become injuries.
  • Applying uniform corrections: The same low score on the same test can have different causes. For example, a poor deep squat might be due to ankle restriction in one athlete and hip stiffness in another. Use the FMS corrective matrix but also apply clinical reasoning: palpate ranges, observe compensations during warm-ups, and ask the athlete about their history.

A Case Example: Applying the Process

Consider a collegiate soccer player with an FMS composite score of 13. The screen reveals an asymmetry in the active straight leg raise (right 2, left 1), a score of 1 on the deep squat, and a score of 1 on the trunk stability push-up. The practitioner prioritizes the asymmetry first. The intervention includes supine hamstring belt stretches for the left leg (3 sets of 30-second holds), hip flexor lunges (2 sets of 10 per side), and dead bug exercises for core control (3 sets of 8 per side). These are performed before each practice. After four weeks, a re-screen shows the asymmetry resolved (active straight leg raise now 2 bilaterally), deep squat improved to 2, and trunk stability push-up remains at 1. The deep squat deficit was caused by ankle stiffness, so the practitioner adds wall ankle mobilizations and heel-elevated squats. After another four weeks, all tests are at least 2, composite score is 16. Prehab shifts to maintenance: two sessions per week with a short circuit of the corrective exercises. The athlete completes the season without lower extremity injury.

Advanced Considerations for the Practitioner

Combining the FMS with other assessments enhances its utility. Consider pairing it with a Y-Balance Test for dynamic balance, a FMS movement quality analysis, and subjective questionnaires like the Oslo Sports Trauma Research Center Overuse Injury Questionnaire. This multi-lens approach gives a fuller picture of the athlete’s risk profile. Additionally, the FMS can be used to screen for readiness to return to sport after injury. An athlete who scores well on the FMS is likely demonstrating sufficient movement control to handle sport-specific demands. However, the FMS is not a substitute for strength, power, or endurance testing — it is a tool for movement quality. Use it in conjunction with performance tests (vertical jump, sprint times, isometric strength) to make load management decisions.

For groups, the FMS can identify team-wide trends. For example, if many athletes score low on the hurdle step, it may indicate a need for generalized hip stability work in the group warm-up. But individualization remains key: the athlete with a specific asymmetry will need targeted corrective work in addition to the group program. The FMS also offers a common language between coaches, strength staff, and medical professionals. Sharing FMS scores and corrective strategies improves communication and ensures everyone is working toward the same movement quality goals.

Long-Term Athlete Development and the FMS

Incorporating FMS-based prehab into long-term athlete development plans yields lasting benefits. Youth athletes can be screened early to identify movement deficiencies that might limit skill acquisition or lead to overuse injuries. Correcting these patterns during the sensitive periods of growth can set the foundation for more advanced training. For adult athletes, regular FMS monitoring prevents movement quality degradation that often accompanies high training loads. As an athlete ages, the FMS can highlight compensations that arise from decreased flexibility or stability, allowing prehab to target age-related vulnerabilities. The FMS is not just for the short term — it is a lifelong tool for movement health.

To stay current, practitioners should attend periodic FMS recertification courses and read updates from the original creators. The field of movement screening continues to evolve, integrating new research on pain science and motor learning. One recent study published in the Journal of Athletic Training confirms the value of asymmetry detection, while another from the NSCA Strength and Conditioning Journal provides practical guidelines for implementing FMS in team settings. By staying informed, the practitioner ensures their prehab programs remain evidence-based and effective.

Final Recommendations for Implementation

To successfully integrate FMS-based prehab into a training environment, follow these guidelines: (1) Ensure all staff are trained in FMS administration and interpretation. (2) Screen each athlete at the start of a training cycle and after any significant change in training load or after injury. (3) Use a systematic corrective approach: fix asymmetries first, then low scores. Prioritize mobility before stability. (4) Keep corrective sets low in volume but high in quality. Never sacrifice form for reps. (5) Re-screen consistently and modify the program as scores improve. (6) Document everything. Track scores, exercises performed, and subjective feedback. This data becomes invaluable for adjusting programs over time and communicating with medical staff. (7) Remember that the FMS is a screening, not a diagnosis. When pain or serious dysfunction is present, refer to appropriate healthcare providers.

The Functional Movement Screen is not a magic bullet, but it is one of the most practical, research-supported tools available for injury prevention. When paired with a thoughtful prehab program, it allows the practitioner to move from reactive injury management to proactive movement optimization. The athlete benefits from fewer days lost, better movement efficiency, and a foundation that supports higher performance. By adopting this framework, you are not just preventing injuries — you are cultivating a movement culture that values quality as much as quantity, and longevity as much as immediate output. This shift in perspective is what separates truly elite training environments from those that simply chase results.