16.1 Grading Therapeutic Exercise & Conditioning Programs
Key Takeaways
- Domain 3 Task 3 opens with methods for grading therapeutic exercise and conditioning programs consistent with indications and precautions.
- Manual muscle test grade dictates the starting point: grades 0 to 1 require passive range of motion and facilitation, grade 2 requires gravity-eliminated active-assisted motion, grade 3 permits active motion against gravity, and grade 3+ or higher permits added resistance.
- Isometric contraction produces tension without joint motion and is the contraction of choice when motion is contraindicated, but it must be avoided or modified where the Valsalva maneuver is dangerous.
- The DeLorme protocol progresses within a session at 50, 75, and 100 percent of the 10-repetition maximum, while the Oxford protocol regresses through the same percentages in the reverse order.
- Muscle soreness lasting more than one to two hours after activity, or new weakness the following day, indicates the dose was excessive — the defining warning sign of overwork weakness in denervated and post-polio muscle.
Grading Therapeutic Exercise & Conditioning Programs
Domain 3, Task 3 begins with methods for grading therapeutic exercise and conditioning programs consistent with indications and precautions. Under OTPF-4, exercise sits within Interventions to Support Occupations — a preparatory method. It is defensible only when it is explicitly linked to an occupational outcome within the same episode of care, and ideally the same session.
1. Start From the Muscle Grade
| Manual Muscle Test Grade | Definition | Exercise Prescription |
|---|---|---|
| 0 (Zero) | No contraction palpable | Passive range of motion; positioning; consider neuromuscular electrical stimulation and mental practice |
| 1 (Trace) | Palpable flicker, no motion | Passive range of motion plus facilitation techniques; electrical stimulation |
| 2− / 2 / 2+ (Poor) | Partial to full range with gravity eliminated | Active-assisted and active range of motion in the gravity-eliminated plane (e.g., shoulder abduction on a powder board) |
| 3 (Fair) | Full range against gravity, no resistance | Active range of motion against gravity; begin functional task use |
| 3+ / 4 (Good) | Full range against gravity with some to moderate resistance | Begin progressive resistive exercise; graded functional loading |
| 5 (Normal) | Full range against maximal resistance | Advanced resistance, endurance, power, and full task demand |
The most common exam application: a client with a grade 2 deltoid placed in an against-gravity reaching task will fail, compensate with trunk lean, and learn a faulty movement pattern. Grade the plane before you grade the load.
2. Contraction Types
| Type | Description | Indication | Caution |
|---|---|---|---|
| Isometric | Tension without joint motion | Motion is contraindicated: post-operative immobilization, acute arthritis flare, healing fracture, casting | Raises blood pressure and encourages the Valsalva maneuver — modify in cardiac disease, uncontrolled hypertension, elevated intracranial pressure, and after eye surgery |
| Isotonic concentric | Muscle shortens against a constant load | General strengthening; lifting phase of a functional task | — |
| Isotonic eccentric | Muscle lengthens under load | Builds strength efficiently; controls lowering | Produces the most delayed-onset muscle soreness and microtrauma — avoid in denervating and post-polio conditions |
| Isokinetic | Constant velocity through the arc using specialized equipment | Objective testing and controlled loading | Equipment-dependent; poor ecological validity |
3. Progressive Resistive Exercise Protocols
Both are built on the 10-repetition maximum (10 RM) — the heaviest load a client can move through the full arc exactly ten times with good form.
| Protocol | Set 1 | Set 2 | Set 3 | Rationale |
|---|---|---|---|---|
| DeLorme (progressive) | 10 reps at 50% of 10 RM | 10 reps at 75% | 10 reps at 100% | Builds in a warm-up; the heaviest work occurs when the muscle is primed |
| Oxford (regressive) | 10 reps at 100% | 10 reps at 75% | 10 reps at 50% | Accommodates fatigue; often better tolerated in deconditioned or easily fatigued clients |
The Governing Principles
- Overload: adaptation requires a demand above habitual levels.
- Specificity (specific adaptation to imposed demands): you get better at what you practice. Strengthening the biceps does not automatically improve dressing; practicing dressing does.
- Progression: the load must advance as capacity grows, or adaptation stops.
- Reversibility: gains are lost when the stimulus is removed — which is why a home program and a role that requires the ability matter more than the clinic sessions.
- Strength versus endurance: high resistance and low repetitions build strength; low resistance and high repetitions build endurance. Most daily occupations demand endurance.
4. The Grading Variables
Advancing or regressing a program is a matter of adjusting one variable at a time:
| Variable | Grade Down | Grade Up |
|---|---|---|
| Plane / gravity | Gravity-eliminated (side-lying, powder board, supported on a table) | Against gravity; then overhead |
| Resistance | No load; body-weight assisted | Cuff weights, resistive bands, heavier objects, heavier resistive media |
| Arc of motion | Short, mid-range arc | Full arc, then end-range control |
| Lever arm | Shorten: hold the weight close to the joint, bend the elbow | Lengthen: extend the arm, hold the object distally |
| Base of support | Wide, supported, seated with back support | Narrow, unsupported sitting, standing, single-limb stance |
| Repetitions and sets | Few repetitions with long rests | More repetitions with shorter rests |
| Speed | Slow and controlled | Faster, then variable and reactive |
| Complexity | Single plane, one joint, one step | Multi-plane, multi-joint, sequenced, dual-task |
| Context | Quiet clinic, therapist cueing | Real environment, distraction, time pressure |
One variable at a time. Changing resistance, speed, and position simultaneously makes it impossible to know what caused the failure.
5. Tissue Healing Timelines Set the Ceiling
| Phase | Approximate Timing | What the Tissue Tolerates |
|---|---|---|
| Inflammatory | Roughly days 0–5 | Protection, edema control, gentle motion within the surgeon's protocol; no loading |
| Proliferative / fibroplasia | Roughly 5 days to 3 weeks | Controlled motion; collagen is laid down but is disorganized and weak |
| Remodeling / maturation | 3 weeks to 1–2 years | Progressive loading; collagen aligns along lines of stress |
Structure-specific milestones matter: after a flexor tendon repair, progressive resistive exercise typically begins around 8 weeks, with return to heavy work or sport around 12 weeks. Skin grafts are immobilized 3 to 5 days before gentle active motion begins.
6. Condition-Specific Precautions
| Condition | Precaution |
|---|---|
| Amyotrophic lateral sclerosis, post-polio syndrome, Guillain-Barré syndrome, muscular dystrophy | Avoid high-load exercise to exhaustion; use individualized submaximal activity, rest, and symptom monitoring. Appropriate dosing varies by diagnosis, disease phase, baseline strength, and next-day recovery. |
| Myasthenia gravis | Fatigable weakness — schedule around anticholinesterase peak effect; avoid exercise to exhaustion and heat exposure |
| Multiple sclerosis | Avoid overheating (Uhthoff's phenomenon); short bouts with cooling and rest |
| Rheumatoid arthritis in flare | Isometrics and gentle active range of motion only; no resistance, no aggressive stretching |
| Osteoporosis | Avoid trunk flexion, twisting under load, and high-impact activity; weight-bearing and resistance training are otherwise protective |
| Cardiac disease and hypertension | Avoid the Valsalva maneuver and sustained isometrics; teach exhalation on exertion; monitor with rating of perceived exertion |
| Heterotopic ossification | Gentle pain-free active motion; no forceful or ballistic stretching |
| Complex regional pain syndrome | No aggressive passive range of motion; use stress loading and graded motor imagery |
| Acute deep vein thrombosis | Hold activity until the client is adequately anticoagulated per the medical team |
| Post-sternotomy | Restricted pushing, pulling, and lifting; no unsupported bilateral overhead activity during the healing period |
Reading the Client's Feedback
- Delayed-onset muscle soreness appears 12 to 48 hours after unaccustomed work, is diffuse, and resolves in a few days. It is expected.
- Unusual or prolonged pain or fatigue, swelling, cramping, delayed recovery, or new weakness the next day means the dose was excessive. Reduce load and reassess rather than assuming that all post-exercise sensation is beneficial or that a single episode proves permanent motor-unit loss.
7. Keep It Occupation-Based
An exercise program that never touches an occupation is exactly the documentation pattern payers deny, and exactly the distractor the exam builds. Three habits keep it defensible:
- Embed the exercise in the task. Grade the reach by moving the client's own coffee mug to a higher shelf rather than by adding a cone stack.
- Name the occupational target in the goal. "Client will lift a 5-pound pan from the stovetop to the counter" beats "increase shoulder flexion strength to 4/5."
- Close the occupational loop. Connect the exercise to a measurable occupational goal and deliberately practice transfer to the relevant task as clinically appropriate.
An occupational therapist evaluates a client three weeks after a peripheral nerve injury and finds that the biceps can complete full elbow flexion range only when the arm is supported on a table in the gravity-eliminated plane, and cannot lift against gravity. Which exercise prescription is MOST appropriate?
A client with post-polio syndrome asks the occupational therapist to design a strengthening program, stating that "muscle burn the next day means it's working." Which instruction is MOST important for the therapist to give?
An occupational therapist is designing a strengthening program for a client with severe osteoporosis who wants to return to gardening. Which program element is CONTRAINDICATED?