Achilles Tendons with Seth O'Neill

Achilles Tendons with Seth O'Neill

From Jacked Athlete Podcast by Jake Tuura

February 16, 2026 · 1h 20m

About this episode

Seth O'Neill discusses Achilles tendon problems and rehabilitation techniques focusing on the soleus muscle and calf strength.

Chapters 00:00 Seth O'Neill's Background and Expertise 01:34 Understanding Achilles Tendon Problems 02:26 The Role of the Plantaris in Achilles Tendinopathy 07:04 The Importance of the Soleus Muscle 16:15 PhD Research on Soleus and Achilles Tendon Rehabilitation 19:43 Calf Muscle Loads and Performance 22:13 Internal vs External Loads in Rehabilitation 30:43 Rehabilitation Focus: Dorsiflexion vs Plantar Flexion 37:27 Identifying Deficits in Performance Testing 39:53 Understanding Muscle Weakness and Performance Misconceptions 40:58 Concentric vs Eccentric Training in Rehabilitation 42:29 Dorsiflexion and Insertional Tendinopathy: A Misunderstanding 45:01 Balancing Load and Pain in Rehabilitation 48:16 Rehabilitation Approaches for Mid-portion and Insertional Tendinopathy 50:35 Neuromuscular Function and Tendon Adaptation 57:41 Understanding Achilles Ruptures: The Perfect Storm 01:05:41 Fluoroquinolones and Tendon Health: Debunking Myths 01:13:07 Metabolic Health and Tendon Repair Takeaways Seth O'Neill is a physiotherapist specializing in calf and Achilles tendon injuries. His PhD focused on the soleus muscle's role in Achilles tendon problems. Peritendon issues can affect various…

People in this episode

Host: Jake Tuura

Guest: Seth O'Neill

Topics covered

  • Achilles tendon problems
  • rehabilitation techniques
  • calf muscle strength
  • plantaris tendon
  • dorsiflexion
  • tendon health

Keywords

  • Achilles tendinopathy
  • plantaris tendon
  • soleus muscle
  • rehabilitation
  • dorsiflexion
  • calf muscle loads
  • tendon health
  • performance testing
  • eccentric training

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