Fatigue-related disability cases present unique challenges for lawyers and legal teams, as they are difficult to prove without objective data. At Workwell Foundation, we provide reliable, science-backed testing that translates fatigue and exertion intolerance into objective, measurable evidence.
Our 2-Day cardiopulmonary exercise testing (CPET) protocol can help identify functional limitations in conditions like ME/CFS and long COVID, giving attorneys measurable evidence. You can use these findings to build stronger documentation, meet evidentiary standards, and present clear, defensible arguments.
Conditions That May Benefit From Objective Disability Testing
Workwell Foundation supports legal teams representing clients dealing with medical conditions that impair their ability to tolerate exertion and recover from activity.
Our 2-Day CPET protocol is designed for assessing cases involving:
- ME/CFS (myalgic encephalomyelitis / chronic fatigue syndrome)
- Long COVID and post-viral fatigue syndromes
- Fibromyalgia
- Lyme disease and chronic infectious conditions with fatigue
- Dysautonomia and POTS with exertional limitations
- Unexplained fatiguing conditions where PEM is suspected
These illnesses involve persistent fatigue, cognitive dysfunction (“brain fog”), disrupted sleep, abnormal heart rate and blood pressure responses, pain, and impaired physiological recovery. Together, these factors significantly limit a person’s ability to sustain physical or cognitive activity.
A defining feature of many of these illnesses is post-exertional malaise (PEM), where even mild physical or mental activity leads to delayed and prolonged symptom worsening.
Why Fatigue-Related Disability Claims Can Be Difficult to Document
The challenge with fatigue-based conditions is demonstrating, with measurable data, how exertion can have a debilitating impact on your client’s ability to work consistently and reliably.
Your clients may describe serious functional limitations, but standard tests rarely capture how exertion affects them over time. This gap in documentation can make it difficult for attorneys to clearly demonstrate the true extent of functional impairment.
Here are some common factors that can complicate fatigue-related disability claims.
- Symptoms fluctuate from one day to the next, making them difficult to document consistently
- Routine labs and imaging appear normal, even when functional capacity is severely reduced
- Clients may sometimes be mischaracterized as deconditioned, unmotivated, or depressed
- Traditional functional evaluations do not measure exertion intolerance or post-exertional decline
- No single biomarker exists for post-exertional malaise (PEM), a core feature of ME/CFS and long COVID
These gaps leave room for misinterpretation, placing lawyers and legal teams in the difficult position of proving disability without clear, measurable evidence.
How 2-Day CPET Measures Functional Impairment
At Workwell Foundation, our specialized testing protocol is designed specifically for people dealing with medical conditions involving post-exertional malaise, such as ME/CFS, long COVID, fibromyalgia, and other related disorders.
Our 2-Day CPET protocol can provide objective data that standard evaluations cannot. It documents the measurable drop in function that occurs after exertion.
This offers attorneys and legal teams a reliable way to demonstrate the severity and consistency of your client’s limitations with documented physiological changes.
The Gold Standard: 2-Day Cardiopulmonary Exercise Testing
We use a 2-Day CPET protocol designed specifically to detect exertion intolerance and the physiological changes that follow. We measure various key biological markers across two consecutive days to quantify a person’s functional capacity.
The National Academy of Medicine (NAM, formerly Institute of Medicine or IOM) endorses Workwell’s 2-day CPET protocol as an objective measure of post-exertional malaise (PEM). Our protocol is suitable for conditions like ME/CFS and long COVID, where symptoms often worsen after exertion. The second-day test allows us to capture and quantify this post-exertional worsening of symptoms.
How CPET Data May Support Disability Claims
For attorneys and legal teams representing complex disability cases, results from our 2-Day CPET offer several advantages.
- The second-day performance decline cannot be voluntarily produced or exaggerated
- We can differentiate disease-related impairment from simple deconditioning
- Results demonstrate an inability to sustain activity, which directly relates to reliable work performance
- All measurements adhere to the American College of Sports Medicine standards and are supported by peer-reviewed literature
- Test results are interpreted by experienced clinicians and physiologists who generate a detailed report written for medical and legal use
Our testing facility in Santa Rosa, CA, follows strict quality control/quality assurance protocols, ensuring accuracy and consistency.
What’s Included in a Workwell CPET Report
Every report is designed to support both medical understanding and legal review and includes:
- Comparison of first-day and second-day performance
- Evidence of PEM and reduced tolerance for physical activity
- Clear interpretation of physiological measures, such as how efficiently the body produces and uses energy and when the shift from aerobic to anaerobic metabolism occurs
- Functional capacity limitations tied directly to the ability to work
- Guidance on safe exertion levels and long-term functional expectations
- Explanations suitable for legal hearings, appeals, and depositions
We also provide educational support and explanatory guidance to help attorneys understand the clinical significance of test findings and integrate them into case strategy.
Disability Claims and Legal Cases That May Use CPET Data
Our CPET reports can be used across a wide range of disability and injury claims, offering clear objective evidence of an individual’s reduced work capacity, exertion intolerance, and the inability to reliably perform or repeat tasks over time.
Attorneys commonly use our findings for the following.
- Social Security Disability (SSDI) Claims: Clear documentation of reduced functional capacity and inability to sustain repeated tasks reliably.
- Long-Term Disability (LTD) Appeals: Objective data that counters denials based on incomplete or single-day, or misinterpreted functional evaluations of work capacity and exertion tolerance.
- ERISA & Non-ERISA Plans: Reproducible physiological measurements that meet evidentiary requirements related to functional impairment.
- Workers’ Compensation Cases: Insight into exertional impairment following infection, injury, or toxic exposure.
- Personal Injury Claims: Documentation of persistent functional loss when imaging and labs are inconclusive.
- Reasonable Accommodation Requests: Concrete thresholds for safe exertion and activity pacing.
Request a CPET Consultation for a Disability Case
If your disability case involves fatigue, exertion intolerance, or post-exertional malaise, we can provide the objective testing to support your argument.
Please contact our team to discuss how our 2-Day CPET testing protocol can support disability claims and appeals, and legal proceedings.
