Jacked Athlete Podcast

Chapters 00:00 Introduction to Lauren Pringels and her work on tendons 00:21 The development of her interest in tendinopathy 01:18 The concept of intratendinous pressure and its significance 02:17 How loading affects pressure inside the tendon 03:13 Research aims to understand pressure's role in tendinopathy 04:17 Sources of intratendinous pressure: external and internal 05:41 The anatomy of the Achilles tendon and torsion effects 07:06 The four main aims of her research framework 08:37 How structural changes in tendinopathy alter pressure behavior 11:00 The impact of tendon torsion on pressure during loading 13:23 Differences in tendon structure at the insertion and mid portion 16:36 Alterations in pressure behavior in tendinopathy 19:44 The vicious cycle of pressure, swelling, and pain 22:21 Therapeutic strategies to control pressure in tendons 25:18 Experimental studies on pressure during movement 37:50 Measuring pressure in living athletes 46:58 GAGs, fluid content, and their role in pressure changes 57:38 Implications for clinical practice and rehabilitation 01:17:14 How this research changes clinical practice and patient management Takeaways Tensile strain alone cannot fully explain insertional tendinopathy development. Increased tensile loads lead to higher pressure in tendon insertions. Torsion in tendons can significantly impact internal pressure during loading. Intra-tendinous pressure increases with exercise, affecting tendon perfusion. Corticosteroids can reduce GAG synthesis, impacting tendon health. Fluid retention in tendons can lead to increased pressure and pain. GAG accumulation in tendons is linked to swelling and pressure changes. Rest and proper recovery are crucial for tendon health post-exercise. High pressures in tendons can collapse blood vessels, affecting perfusion. Exercise can help reduce fluid retention in tendons. Heavier loading creates a stronger driving force for fluids. Slow loading provides time for fluids to escape from the tendon. The slow heavy condition produced the greatest response in tendon thickness and stiffness. Reducing compression during rehabilitation improves patient outcomes. Patient satisfaction was significantly higher in the low compression group. Applying a good load on the tendon is crucial for recovery. Rest is essential in the early stages of tendon injuries. Heavy slow and isometric exercises are well tolerated by patients. The GhenTendon initiative aims to bridge clinical care and research. Understanding intra-tendinous pressure is key to managing tendinopathy. Download Lauren's PhD: https://www.publicatie-online.nl/publicaties/lauren-pringels/  Lauren on Twitter: https://x.com/LaurenPringels  Lauren on Instagram: https://www.instagram.com/lauren.pringels/  Lauren on LinkedIn: https://www.linkedin.com/in/lauren-pringels-773197203/  GhenTendon: https://www.ugent.be/ge/hsr/en/research/orthopaedics-and-traumatology/ghentendon  Notes: https://jackedathlete.com/podcast-179-intratendinous-pressure-with-lauren-pringels/ 

Chapters 00:00 Introduction to Jarred Boyd and His Journey 03:03 The Importance of Decision Making in Physical Therapy 05:56 Path to the NBA: How Jarred Boyd Got There 09:12 Curiosity and Learning: The Foundations of Clinical Practice 11:55 Principles of Physical Therapy: Understanding Variability and Robustness 15:12 The Role of Physics in Performance and Rehabilitation 17:55 Building Relationships in Clinical Settings 20:57 Exploring Tendons: Pain, Structure, and Function 24:01 Understanding Tendon Management and Rehabilitation 27:01 The Nuances of Tendon Pain and Function 29:58 The Complexity of Tendon Structure and Function 32:50 Final Thoughts on Tendon Management and Performance 43:16 Understanding Muscle Function and Tendon Dynamics 46:08 Exploring Performance Metrics and Tendon Health 51:21 The Five Ps: Assessing Tendon Function 56:24 Interventions for Tendon Health 01:01:45 Calming Down and Building Up Tendon Function 01:06:25 The Role of Stiffness in Tendon Behavior 01:12:04 Movement Strategies and Tendon Pain 01:17:14 Energy Buffering and Power Attenuation in Tendons 01:22:33 Understanding Tendon Mechanics 01:25:44 The Importance of Tendon Stiffness 01:30:30 Dynamic Effort Methods in Rehabilitation 01:34:27 The Interaction of Muscle and Tendon 01:39:09 Exploring Tendon Pathology 01:43:18 Seated vs. Standing Calf Raises    takeaways Jarred Boyd is a physical therapist and strength coach in the NBA. Decision-making principles are crucial for effective clinical practice. Curiosity drives continuous learning and improvement in the field. Variability and robustness are key principles in physical therapy. Understanding physics can enhance performance and rehabilitation strategies. Building social capital is essential for effective collaboration in clinical settings. Tendon pain management requires a nuanced understanding of structure and function. Pain can significantly alter movement solutions and performance. The human body exhibits degeneracy, allowing for multiple solutions to movement problems. Tendon management involves balancing pain relief with functional and structural considerations. The vasus lateralis plays a key role in deceleration. Speculation can lead to valuable research discussions. Limiting muscle shortening velocity can enhance force production. Player feedback is essential for assessing tendon function. Addition by subtraction can effectively manage tendon pain. Calming down the tendon can facilitate recovery. Tendon stiffness varies based on task demands. Tendon pain can shift between limbs due to compensatory strategies. Energy buffering is crucial for muscle-tendon dynamics. Understanding tendon behavior is vital for effective rehabilitation. The initial stretch of the tendon is crucial for energy release. Tendon stiffness is a key adaptation for performance. Dynamic effort methods can bridge the gap in rehabilitation. Task specificity is vital in assessing tendon stiffness. Understanding tendon pathology requires a nuanced approach. Seated calf raises can be beneficial for specific conditions. The interaction between muscle and tendon is complex and significant. Monitoring tendon strain at specific sites is challenging but important. The total work done on biarticular tissues may lead to more soreness. A tailored approach to loading is essential for recovery.    Jarred on Instagram: https://www.instagram.com/dr.jfitboyd  Jarred on LinkedIn: https://www.linkedin.com/in/jarred-boyd  Notes: https://jackedathlete.com/podcast-178-tendons-and-decision-making-with-jarred-boyd/ 

Chapters 00:00 Introduction to Patellar Tendon and Cartilage 02:49 Exploring the Role of Imaging in Sports Medicine 06:40 Understanding Patellofemoral Pain 09:11 Kinematics vs. Kinetics in Knee Function 11:48 The Importance of the Soleus in Knee Health 14:55 Distinguishing Between Tendinopathy and Patellofemoral Pain 18:31 The Role of MRI in Diagnosing Knee Issues 20:57 The Impact of Patella Alta and Baja 23:33 Managing Knee Pain: Treatment Options 27:14 The Relationship Between Tendons and Cartilage 29:57 Surgical Options for Knee Pain 33:19 Final Thoughts on Tendon and Cartilage Health  Takeaways There's a lot of projecting with imaging and function. Understanding kinematics and kinetics is crucial for knee health. Patellofemoral pain often coexists with other knee issues. MRI findings must be matched with functional movement. The soleus plays a significant role in knee function. Many diagnosed with tendinopathy may actually have patellofemoral pain. Compression in the knee can lead to increased wear and tear. Treatment options should be tailored to individual needs. Surgical options exist but vary in effectiveness. Loading the tendon and cartilage is essential for recovery.   Patellofemoral Joint Protocol:  https://jess-elis-s-school1.teachable.com/a/aff_l9jd3kpd/external?affcode=1653451_hksb4f5s Rehab Code: https://www.therehabcode.com Instagram: https://www.instagram.com/rehab_code/ Linktree: https://linktr.ee/rehabcode?fbclid=PAZXh0bgNhZW0CMTEAAaclQqSRaEdilxSZtc4GugYpJ-vgCpSk9o27MRgnr1fYbmVuCHvmsZaqD96xOA_aem_SmIz4cOqMV6iGFi6kHmsyw Notes: https://jackedathlete.com/podcast-177-tendon-cartilage-part-2-with-jess-elis/ 

Takeaways Tendon management evolution from avoidance to load-based strategies The role of biomechanics and physics in rehab Historical perspective on tendon protocols like Alfredson's The importance of strain, dose, and load in tissue adaptation Differences between pain reduction and stiffness improvement Objective measurement of tendon stiffness and strain The impact of subjective pain versus objective load Practical approaches to load prescription in rehab Future directions in in vivo strain measurement The influence of neural and muscular factors on tendon health Tendon training and its impact on injury prevention Force testing methods and their limitations The significance of consistent measurement in clinical practice Differences in force output based on joint position and testing protocols The role of strength and stiffness in tendon health Practical approaches for non-elite athletes to improve tendon resilience The importance of standardized testing to compare data across studies and clinics Challenges in interpreting force data and injury risk correlations The potential of imaging and force testing to predict injury risk Future directions in in vivo tendon strain management Chapters 00:00 Introduction and guest background 02:14 Chris Juno's journey into biomechanics and tendon research 07:55 Historical perspective on tendon management and protocols 14:59 The shift from avoidance to load-based rehab strategies 22:00 Understanding the difference between pain and stiffness 29:49 The role of physics, force, and strain in rehab 36:58 Measuring and optimizing tendon load and position 43:53 Future directions: in vivo strain measurement and clinical tools Instagram: https://www.instagram.com/cmj027/ Dungeons and Dynamometers: dungeonsanddynamometers.com Twitter: https://x.com/Chris_Juneau3 Email: [email protected] Podcast: https://ptinquest.com Notes: https://jackedathlete.com/podcast-176-tendons-and-force-testing-with-chris-juneau/

Chapters 00:00 Introduction to Dr. Lance Brooks 04:56 The Role of Force Plates in Strength Training 11:51 Understanding the Force-Velocity Relationship 19:10 Tissue Health and Injury Prevention 26:59 The Disconnect Between Strength Training and Sprinting 28:45 Understanding Forces in Strength Training 31:03 The Science Behind Muscle Contraction 37:14 Exploring the Force-Velocity Relationship 39:02 The Role of Tendons in Sprinting 42:02 Length-Tension and Force-Length Relationships 55:52 Biomechanics and Individual Variability in Movement 01:00:00 The Interplay of Muscle and Fascia 01:00:33 Exploring Muscle Research Methodologies 01:04:50 Insights on Muscle Activation and Force Production 01:10:48 The Role of Fascia in Muscle Function 01:19:08 Understanding Neural Control in Muscle Activation 01:20:39 The Journey of a Researcher and Coach  takeaways Force plates are powerful tools but often misused by coaches. Understanding physics is crucial for interpreting force plate data. Injury prevention requires a combination of strength training and sport-specific movements. The force-velocity relationship is often misapplied in strength training. Sprinting can have protective effects against hamstring injuries. Coaches need to be educated on the proper use of sports science tools. Heavy strength training is not the only way to improve performance. Tissue health is essential for athletic performance and injury prevention. The disconnect between weight room strength and on-field performance is significant. A balanced training approach is necessary for optimal athlete development. Muscle tension is an internal force, while ground reaction force is external. Effective mechanical advantage changes with body position during exercises. In science, a theory is a well-supported model, not just a hypothesis. The force in muscle contraction comes from myosin binding to actin. During sprinting, muscles act quasi-isometrically, primarily utilizing tendons for energy storage. Time is a critical variable in muscle tension and force production. Length-tension relationships are crucial for understanding muscle performance. Optimal muscle length allows for maximum force production. Different muscles have unique optimal lengths for force generation. Biomechanics must consider individual anatomical differences in movement.  Fascia plays an important structural and functional role. Muscle activation is crucial for force production. In vivo research provides insights into real-life movement. Neural control is essential for muscle activation. Maintaining muscle compartment integrity enhances force output. Research methodologies vary in their application and insights. Understanding muscle dynamics is key for athletic performance. Training should focus on muscle rather than isolated structures. Experiments require efficiency and adaptability. A background in coaching informs research perspectives. Links: https://linktr.ee/brooksperformancemethods Website: https://www.brooksperformancemethods.com Instagram: https://www.instagram.com/lancebrooks_phd/ Twitter: https://x.com/lancebrooks_phd Notes: https://jackedathlete.com/podcast-175-how-muscles-work-with-dr-lance-brooks/