Objective strength measurement is the future— is your program there yet? Move beyond subjective strength grading and introduce students to the power of objective measurement. This webinar explores OTu’s Handheld Dynamometry resources, featuring high-quality videos and guided demonstrations that make teaching objective strength testing easy. Learn how these tools help students master positioning, stabilization, and interpretation of strength data so they develop the clinical precision needed for modern practice. Register now to discover practical ways to integrate strength testing with hand-held dynamometry into labs, hybrid courses, and independent learning.
Featured Speaker: Sheila R. Krajnik, EdD, OTR/L
Dr. Krajnik brings over 43 years of diverse clinical and academic expertise to the OTu Team, specializing in adult neurological practice and gerontology. With extensive experience across various settings, she has held administrative and clinical specialist positions, contributed to research and advocacy efforts, and excelled in educating future OT and OTA practitioners.
00:00 Introduction to the Objective Strength Assessment Webinar
02:19 Challenges & Limitations of Traditional MMT
06:36 Objective Strength Testing with Dynamometry
09:09 Pro’s & Con’s of Handheld Dynamometry
13:29 Handheld Dynamometry in Education: OTu Resources
19:06 OTu’s Customizable Pre-Made Lab Handouts for HHD
22:09 Teaching With OTu’s HHD Resources: Lecture, Lab, Exams
23:53 Handheld Dynamometry Resources Demonstration
26:11 Option to Obtain HHD’s for Your Programs
29:44 Contact Information & Wrap-Up
Helpful Links: Complimentary Educator access | Educator resources | Set up a Demo
Beyond the Gold Standard: Why Handheld Dynamometry Belongs in Your OT Classroom
We’ve all been there. A student performs what looks like a textbook manual muscle test—positioning is perfect, stabilization is appropriate, commands are clear. But when it comes time to grade the resistance, that confident exterior cracks just a bit. Is this a 4? A 4+? Should I push harder? What if I hurt them?
It’s a moment that plays out in occupational therapy labs across the country, and it points to something we’ve long known but perhaps been reluctant to fully address: traditional manual muscle testing, for all its enduring value, has significant limitations that affect both how we teach and how practitioners ultimately assess strength in the field.
During our recent faculty webinar, we explored an approach that doesn’t replace manual muscle testing but rather complements it—handheld dynamometry for objective strength assessment. What emerged from the discussion wasn’t just a conversation about new tools, but a deeper reflection on how we prepare students for the evolving demands of clinical practice.
The Manual Muscle Testing Challenge
Manual muscle testing has earned its place as the gold standard across disciplines and settings, and rightfully so. It requires no special equipment, can be performed anywhere, and when executed by an experienced clinician, provides valuable functional information. We’re not suggesting it should disappear from OT education or practice. But let’s be honest about its limitations, particularly in educational settings.
The lack of objectivity stands out immediately. Students don’t yet have the experiential database that seasoned practitioners draw from when determining whether resistance merits a grade of 4 or 5. They’re often uncertain about applying appropriate force—either hesitating to push hard enough or, conversely, worrying they’ll apply too much. And then there’s the challenge we face as educators: how do we truly verify that a student is providing the correct level of resistance during a performance assessment? We can observe positioning and technique, but the actual force being applied? That remains largely invisible to us.
One webinar participant captured it perfectly: students struggle with the lack of objectivity and test-retest disparity. Another noted the difficulty of assessing whether grades are accurate given these inherent limitations. These aren’t new problems—they’re challenges that have existed since manual muscle testing became part of occupational therapy education. But they’re challenges worth addressing head-on.
The struggle extends beyond distinguishing a 4+ from a 5. Even concepts like “partial range of motion” for a 2+ grade can feel nebulous to learners who haven’t yet developed clinical intuition. We teach gravity-reduced positioning, but quantifying strength within that plane remains subjective. And when students move into fieldwork, these uncertainties follow them, potentially affecting their confidence and the reliability of their assessments.
The Dynamometry Advantage
Occupational therapy practitioners already embrace objective measurement for hand strength—grip and pinch dynamometers have been classroom and clinic staples for decades. We understand their value: measurable data, standardized protocols, and numbers that mean something consistent across testers and testing sessions. Handheld dynamometry simply extends that principle to larger muscle groups throughout the body.
The reliability numbers tell a compelling story. Research examining grouped data shows that handheld dynamometry for large muscle groups achieves inter-rater and intra-rater reliability values in the 0.85-0.95 range. Smaller muscle groups see slightly lower but still respectable reliability around 0.75-0.85. Compare this to traditional manual muscle testing, where reliability values vary widely and are consistently lower, particularly for grades above 3.
But the benefits extend beyond psychometric properties. When we use handheld dynamometry with the same tester and the same tool, we achieve more reliable outcomes for measuring progress—exactly what third-party payers want to see when evaluating goal attainment and justifying continued intervention. In an era where demonstrating measurable progress affects reimbursement, this matters.
There’s also the matter of professional communication. Occupational therapy practitioners working in orthopedic or sports medicine settings often collaborate with physical therapists, orthopedic surgeons, and other professionals who increasingly rely on objective strength measures. Speaking the same quantitative language elevates our professional standing and ensures our assessments carry appropriate weight in interdisciplinary discussions.
Of course, handheld dynamometry isn’t perfect. Cost remains a consideration, though we’ll address how our partnership with ActiveForce helps with that barrier. Isolating specific muscle groups, particularly smaller ones like wrist flexors and extensors, can be challenging given the complexity of muscle action in the forearm. And tester strength still matters—a limitation shared with traditional manual muscle testing—though the use of stabilization straps can significantly reduce this confounding variable.
Bringing Dynamometry Into Your Classroom
We’ve developed comprehensive resources within OTu to support faculty who want to integrate handheld dynamometry into their teaching, whether as a primary method or as supplementary exposure.
The instructional video library mirrors the structure you’re already familiar with from our range of motion and manual muscle testing content. Every major muscle group has corresponding videos demonstrating proper dynamometer placement, stabilization techniques, and testing procedures—both with and without stabilization straps. These videos are filmed with the same attention to anatomical precision and clear instruction that characterizes all OTu content.
The stabilization strap deserves special mention because it addresses one of the key limitations we discussed earlier: tester strength. By anchoring the strap to a stable surface and positioning the dynamometer appropriately, students can assess strength more objectively, reducing the variable of their own body size and strength relative to their partner or patient. Our videos demonstrate both approaches, giving you flexibility in how you teach the technique.
Beyond videos, we’ve created pre-made, fully customizable lab handouts specifically for handheld dynamometry. You’ll find these under Teaching Content in the ROM/MMT and Palpation app, accessible through a simple drop-down menu that lets you filter for dynamometry-only resources. Each handout includes anatomical information, muscle origin and insertion, innervation details, patient cueing, practitioner positioning, and functional context—everything you need for a complete lab experience.
The beauty of these handouts is their adaptability. Maybe you want to introduce dynamometry for just one or two muscle groups as an exploratory exercise. Perhaps you’re ready to integrate it across multiple body regions. These documents can be downloaded, copied, and modified to fit your specific pedagogical approach and learning objectives.
Making It Practical and Affordable
One of the primary barriers to adopting new assessment tools in education is cost. We recognize that lab budgets are tight and every purchase needs to justify itself multiple times over. That’s why we partnered with ActiveForce to make handheld dynamometers accessible to OT programs using OTu. If your program has adopted OTu as a teaching and learning resource, you qualify for a significantly discounted rate: $300 per dynamometer. When you consider that comparable devices on the market can cost several times that amount, this pricing makes equipping your lab genuinely feasible.
The ActiveForce dynamometer comes with everything needed to start teaching immediately: the device itself, stabilization straps for reducing tester strength as a confounding variable, and seamless connectivity to smartphones, tablets, or computers for real-time data display. Students can create accounts quickly, and in our experience, the technology simply works—no extensive troubleshooting or complicated setup eating into precious lab time.
If you’re interested in purchasing devices for your program, the process is straightforward. Navigate to https://clinicalpattern.com/activforce/, then simply scroll to the “Faculty: Group Savings” tab and complete the form, indicating your interest in ActiveForce dynamometers in the notes field.
Integration Strategies That Work
How might you actually use these resources in your teaching? The possibilities are more flexible than you might initially think.
At the most basic level, you can embed dynamometry videos directly into lecture materials as clickable links, giving students visual exposure to the technique even if hands-on practice isn’t immediately available. You might assign videos as pre-lab preparation, allowing students to arrive with baseline familiarity that makes lab time more productive.
For programs ready to invest in devices, hands-on lab sessions become the natural next step. Students can practice on each other, experiencing both sides of the assessment and building confidence with the technology and technique. This experiential learning creates a more tangible understanding than video observation alone.
Performance assessments can incorporate dynamometry alongside traditional methods, giving you more comprehensive evaluation data and students more varied demonstration opportunities. You might even develop written exam questions that require clinical reasoning about when handheld dynamometry is most appropriate, its advantages and limitations, and how to interpret results in clinical context.
The goal isn’t to completely overhaul your existing curriculum but to thoughtfully augment it. Even modest exposure to objective strength assessment tools prepares students for fieldwork sites where these methods are increasingly common. And students who understand both traditional and objective approaches enter practice better equipped to advocate for evidence-based assessment tools in their own future clinical settings.
Looking Forward
As educators, we’re called to prepare students not just for today’s practice landscape but for tomorrow’s. Manual muscle testing will undoubtedly remain relevant—its accessibility and functional orientation ensure that. But the healthcare environment increasingly values objective measurement, demonstrable outcomes, and standardized communication across disciplines.
By introducing students to handheld dynamometry, we’re giving them additional tools for their professional toolkit. We’re teaching them that multiple valid approaches exist for strength assessment, each with appropriate contexts and applications. And we’re modeling the kind of evidence-based, outcomes-focused practice that will serve them throughout their careers.
The resources exist. The technology is accessible. The partnership pricing removes significant financial barriers. What remains is the collective decision of OT educators to embrace objective strength assessment as a valuable complement to traditional methods.
We’d love to hear how you’re approaching strength assessment in your program, what challenges you face, and what creative solutions you’ve developed. This conversation doesn’t end with a webinar or a blog post—it continues in labs, faculty meetings, and informal exchanges among educators committed to excellence in OT education. Because ultimately, when we equip students with both traditional skills and emerging tools, we’re not choosing between approaches. We’re expanding possibilities.
Want to explore OTu’s handheld dynamometry resources or learn more about the ActiveForce partnership? Visit https://clinicalpattern.com/occupational-therapy/ or reach out to schedule a consultation. We’re here to support your teaching, learn from your expertise, and continue this important conversation about preparing the next generation of occupational therapy practitioners.
