This is a static, no-movement worksheet. It teaches the difference between arriving at a declared angle and controlling an already-recorded task there. All angles, cursor samples and support configurations are fictional. Do not copy a position, test a joint, hold an end range, remove support, add load or use pain as data. This supplement deliberately uses the governed lesson’s no-attempt record route; it neither replaces nor expands the separately declared bounded configuration. The worksheet score checks calculations and boundary reasoning; it does not score a body. Angle-specific improvement can be described only inside the same device and support configuration. It cannot establish tissue integrity, joint safety, whole-range control or injury prevention.
This dossier explains the evidence and its limits. It is not a diagnosis, personal recommendation, assessment, clearance, performance promise or training programme. Actionable teaching appears only when the canonical Power record explicitly authorises it.
Complete bounded explanation
What this power means.
Capability to develop or express end-range control in a declared context without inheriting broader claims.
What the current evidence supports
End-range performance can improve, usually in an angle- and task-specific way; broad transfer is not established.
How to observe or measure it without overclaiming
Angle-specific torque or task accuracy measures tested capacity in that position, not tissue integrity or safety in every movement.
Myth
Own impossible joint angles
Metric
Accuracy and force at a declared angle
Boundary
One-angle strength cannot prove whole-range control or tissue safety.
Negative and limiting findings
Isometric strength gains were limited to the trained and adjacent angles.
Claims this evidence cannot support
Bulletproof joints
Own every range
Loaded stretching repairs injuries
End range prevents all injury
Evidence guide frame · non-prescriptive
A guide frame—not a training protocol.
Explain end-range control as performance at a declared angle, without presenting extreme positions as desirable or safe.
What this frame may discuss
Evidence and measurement boundaries for end-range control
Task specificity, access configurations and negative findings
Limits on transfer, efficacy and authority
Conceptual observations
Conceptually separate arriving at an angle from producing controlled force or accuracy at that angle.
Treat supports, assistance and apparatus as part of the measurement configuration.
Reflection prompts
What does an angle-specific result say, and what does it leave unanswered about the rest of the range?
How would support or assistance change the meaning of the observation?
What it cannot establish
One-angle strength cannot prove whole-range control or tissue safety.
It cannot establish: Bulletproof joints.
It cannot establish: Own every range.
It cannot establish: Loaded stretching repairs injuries.
It cannot establish: End range prevents all injury.
Accessibility alternatives
Words or diagrams are sufficient; no joint position needs to be demonstrated.
Supported, assisted and no-attempt configurations remain valid.
No extreme range, unsupported position or comparison target is implied.
Non-participation remains valid: Yes.
Stop and escalation boundaries
Stop if the frame is being turned into an end-range hold, loaded position, pain test or joint challenge.
Stop if the reader feels pressure to remove support or exceed a comfortable, clinician-approved boundary.
Pain, instability, injury, post-operative or rehabilitation questions require an appropriately qualified clinician, not this frame.
Prohibited uses
Loaded or unloaded movement instruction, holds, repetitions, duration or progression.
Claims of joint protection, tissue repair or injury prevention.
Extreme-position challenges or removal of supports.
No collection or scoring: this page requests no answers, stores nothing and produces no personal or Titan result.
This is a static, no-movement worksheet. It teaches the difference between arriving at a declared angle and controlling an already-recorded task there. All angles, cursor samples and support configurations are fictional. Do not copy a position, test a joint, hold an end range, remove support, add load or use pain as data. This supplement deliberately uses the governed lesson’s no-attempt record route; it neither replaces nor expands the separately declared bounded configuration. The worksheet score checks calculations and boundary reasoning; it does not score a body. Angle-specific improvement can be described only inside the same device and support configuration. It cannot establish tissue integrity, joint safety, whole-range control or injury prevention.
Check the boundaryRead the evidence, risk framing, prerequisites and stopping rules before attempting anything.
Declare the baselineUse only the task and measurement contract specified by the governed lesson.
Complete the bounded practiceFollow the ordered steps without hidden progression or improvised intensity.
Retest separatelyKeep direct performance, delayed retention and transfer as different questions.
ReviewContinue, adapt, seek support or stop according to the lesson's declared decision rules.
Authority boundary: A governed exercise is available only in the declared configuration, dose and stopping rules. The method is Power-specific; its actionability follows this treatment.
Citation roles are explicit. A source may support existence or trainability while simultaneously limiting transfer, certainty, generalisation or safety.
Gerard E McMahon; Christopher I Morse; Adrian Burden; Keith Winwood; Gladys L Onambélé · 2014 · Primary research
Current teaching and evidence boundary
The next gate remains visible.
No external confirmation is required for the current bounded explainer and non-prescriptive guide-frame permissions; any stronger efficacy, generalisation, protocol, promotion or independent-validation claim requires a new adjudication.
A separately governed practical lesson is available at /tutorials/pwr-026/. Its safe configuration, prerequisites, ordered practice, measurement, stopping, accessibility, retention, transfer and review rules remain controlling.