ISSA Corrective Exercise Specialist cheat sheet

Kinetic chain = nervous, muscular, articular, and fascial systems cooperating to produce and control movement; a dysfunction at one link alters force distribution at all others.

Regional interdependence: dysfunction in one region (e.g., limited ankle dorsiflexion) predicts compensation in a distant region (e.g., anterior knee or lumbar overload).

Corrective exercise continuum: inhibit overactive tissue, lengthen shortened tissue, activate underactive tissue, integrate into a functional pattern (ILEA).

Force-velocity and length-tension relationships determine a muscle's capacity to produce tension; altered resting length shifts both curves and reduces force output.

Davis's law: soft tissue remodels along the lines of mechanical stress; chronic posture therefore becomes chronic tissue adaptation.

Wolff's law applies to bone: loading pattern drives trabecular orientation, which is why weight-bearing integration matters after mobility work.

Joint-by-joint model: ankle mobility, knee stability, hip mobility, lumbar stability, thoracic mobility, scapulothoracic stability, glenohumeral mobility.

Corrective exercise is not rehabilitation; red-flag findings (numbness, night pain, progressive weakness) require medical referral before training.

Sequence: health history and PAR-Q, static posture, range-of-motion screen, movement screen, then performance testing; findings drive program priority.

Overhead squat assesses bilateral symmetry, ankle and hip mobility, thoracic extension, and lumbo-pelvic control under load.

Single-leg squat reveals frontal-plane knee valgus, hip abductor/external rotator control, and ankle stability asymmetry.

Push-up and pulling screens grade scapular control, thoracic position, and glenohumeral stability.

Goniometric or inclinometer values are compared bilaterally; a side-to-side difference is more informative than an absolute number.

Document compensations in three planes and note the joint above and below the observed fault to locate the driver.

Retest the same screen after a corrective block; change in screen score, not subjective feel alone, determines progression.

Screen results are hypotheses: confirm with manual muscle testing, length tests, and provocation before assigning a corrective priority.

Plumb-line landmarks: external auditory meatus, acromion, greater trochanter, just anterior to lateral malleolus, and slightly anterior to the knee axis.

Upper crossed syndrome: forward head, increased cervical lordosis, rounded shoulders, and a protracted scapula with tight pectorals and deep cervical flexors weak.

Lower crossed syndrome: anterior pelvic tilt with tight hip flexors and lumbar erectors, weak abdominals and gluteals.

Pronation distortion syndrome: foot pronation, knee valgus, and internal femoral rotation with tight peroneals, TFL, and adductors.

Flat-back posture shows decreased lumbar lordosis and is associated with hamstring tightness and hip flexor weakness.

Sway-back posture: pelvis shifts anteriorly, thorax posteriorly, with tight hamstrings and hip flexors and inhibited abdominals.

Anterior pelvic tilt is measured as the angle between the ASIS-ASIS line and PSIS-PSIS line; typical resting value is roughly 10-15 degrees.

Static posture is one snapshot; confirm with dynamic screening because compensation strategies can mask resting alignment.

Length-tension relationship: a muscle produces peak tension near resting length; chronic shortening or lengthening reduces active force.

Force-coupling: force transfers through myofascial continuities, so tension in one segment alters pull on adjacent segments.

Reciprocal inhibition: contraction of an agonist reflexively reduces motor drive to the antagonist; chronic hypertonicity therefore suppresses the opposing muscle.

Autogenic inhibition: sustained tension in a muscle (or Golgi tendon organ input) reduces its own motor drive, the basis of contract-relax stretching.

Arthrogenic inhibition: joint effusion or pain inhibits surrounding musculature, common after knee or ankle injury.

Altered reciprocal inhibition describes an overactive muscle reducing neural drive to its functional antagonist (e.g., tight hip flexors reducing gluteal activation).

Synergistic dominance: a synergist substitutes for a weak prime mover, producing faulty movement and overuse of the synergist.

Assessment pairing: identify overactive/short tissue and underactive/lengthened tissue for each dysfunction before prescribing exercise.

Inhibit phase: self-myofascial release or inhibitory techniques applied 30-90 seconds per area to reduce overactivity before lengthening.

Lengthen phase: static or neuromuscular stretching held roughly 30 seconds, 1-3 sets, targeting the identified overactive tissue.

Activate phase: isolated strengthening of the underactive muscle, typically 1-3 sets of 10-15 controlled repetitions with emphasis on position.

Integrate phase: retrain the pattern under load or speed, 1-3 sets of 8-15 reps, progressing from isolated to full-body movement.

Order matters: releasing and lengthening before activation prevents the overactive tissue from re-dominating the newly activated muscle.

Program duration: a corrective block typically runs 4-6 weeks before formal retesting of the same screen.

Prioritize one or two dysfunctions per block; addressing everything at once dilutes stimulus and confounds retesting.

Progression rule: advance when the client demonstrates the target position without cueing, not simply when sets are completed.

Static stretching improves tolerance to stretch and resting length; dynamic and ballistic work is better suited to pre-activity preparation.

PNF contract-relax uses a 5-10 second isometric contraction followed by a relaxed stretch to exploit autogenic inhibition.

Foam rolling acutely increases range of motion without meaningful performance decrement when kept under roughly 60 seconds per area.

Avoid rolling directly over bony prominences, acute injury, open wounds, or areas of numbness and tingling.

Mobility = range of motion plus control; flexibility alone does not guarantee usable range under load.

Hold SMR pressure on a tender point 30-90 seconds while breathing; sustained pressure is more effective than rapid rolling for tone reduction.

Stretch to the point of tension, not pain; sharp pain or tingling indicates nerve involvement and warrants stopping.

Combine mobility drills with end-range activation (e.g., ankle dorsiflexion drill followed by calf and tibialis work) to retain new range.

Local stabilizers (transversus abdominis, multifidus, pelvic floor, diaphragm) provide segmental stiffness; global movers produce torque.

Drawing-in maneuver activates deep stabilizers with minimal spinal motion; bracing co-contracts the whole trunk for load.

Intra-abdominal pressure generated by diaphragm and pelvic floor co-contraction stiffens the spine before limb movement.

Neutral spine is maintained through hip hinge and anti-extension, anti-rotation, and anti-lateral flexion drills.

Common fault: global bracing substituted for local control, visible as rib flare and breath holding during low-load drills.

Hip hinge competency precedes loaded lifting; loss of neutral pelvis under load indicates insufficient lumbo-pelvic control.

Anti-rotation (Pallof press) and anti-lateral flexion (suitcase carry) train stability without generating spinal motion.

Breathing mechanics: inhale to expand the rib cage, exhale to engage the pelvic floor and lower ribs down; breath-holding during low load is a fault.

Upper extremity: scapular stability precedes glenohumeral mobility; serratus anterior and lower trapezius activation supports overhead range.

Rounded shoulder correction: release pectoralis minor and upper trapezius, lengthen, then activate lower trapezius and serratus anterior, then integrate pressing/pulling.

Shoulder impingement precautions: avoid painful overhead loading until scapular upward rotation and thoracic extension are adequate.

Lower extremity: ankle dorsiflexion restriction drives knee valgus and anterior knee stress; address calf and soleus restriction first.

Knee valgus correction: release adductors and TFL, activate gluteus medius and maximus, then integrate into squat and single-leg patterns.

Patellofemoral pain: control hip internal rotation and knee valgus during single-leg tasks; avoid loaded deep flexion if it provokes symptoms.

Plantar fasciitis and pronation: address calf and plantar tissue tone, intrinsic foot activation, then integrate into gait and single-leg balance.

Hamstring strain prevention: eccentric hamstring loading plus pelvic control, not stretching alone, reduces recurrence risk.

Pregnancy: avoid supine exercise after the first trimester, prolonged breath holding, and high intra-abdominal pressure; screen for diastasis recti.

Osteoporosis: avoid loaded spinal flexion, rotation, and combined flexion-rotation; favor hip hinge, extension, and axial loading within tolerance.

Hypertension: avoid Valsalva and heavy isometric holds; monitor blood pressure response and breathing during resistance work.

Post-surgical clients follow surgeon and physical therapist protocols; corrective exercise does not override range-of-motion or load restrictions.

Refer out for red flags: night pain, unexplained weight loss, progressive neurological deficit, bowel or bladder changes, fever with joint pain.

Diabetes: monitor for hypoglycemia with exercise, inspect feet for ulceration, and avoid exercise during active foot wounds.

Youth clients: emphasize movement competency and control over maximal load; growth-related pain warrants assessment and load modification.

Document screening findings, corrections applied, and referral decisions; clear records support continuity and scope-of-practice boundaries.