Show Notes
Whether you're training for a marathon, hitting the trails on weekends, or just getting back into running after years away—this episode is for you.
There's a part of your body that's absolutely critical to your running performance and injury prevention, and most runners are neglecting it: your ankles and feet.
The ankle is the first major joint to absorb impact when your foot hits the ground. It's the foundation of your entire kinetic chain. Yet most runners never think about ankle mobility or foot strength until something goes wrong.
The Ankle: Your First Line of Defense
When you run, every foot strike generates impact forces of two to three times your body weight. Over a marathon, that's 40,000+ steps—millions of pounds of cumulative force that your ankle must handle.
Dorsiflexion—the ability for your shin to travel forward over your foot while your heel stays down—is the critical movement. We want to see at least 15-20 degrees for running.
When dorsiflexion is limited, the body compensates:
- Early heel rise: More stress on forefoot, Achilles, and plantar fascia
- Foot pronation: Overpronation stresses medial structures, contributes to shin splints
- Knee valgus: Increased stress on knee joint, IT band, and hip
- Forward trunk lean: Changed mechanics, increased lower back load
- Shortened stride: More steps, more cumulative impact, less efficiency
The Modern Foot Problem
Your foot contains 26 bones, 33 joints, and over 100 muscles, tendons, and ligaments. But most of us have spent our entire lives in shoes that don't allow the foot to function as designed.
Narrow toe boxes, elevated heels, stiff soles, and arch support have weakened our intrinsic foot muscles over decades. The foot becomes passive, relying on the shoe rather than being an active, responsive foundation.
The Injury Connection
So many common running injuries trace back to ankle and foot dysfunction:
- Plantar Fasciitis: A whole lower leg problem manifesting in the foot
- Achilles Tendinopathy: Almost always associated with calf tightness and ankle mobility restrictions
- Shin Splints: Overpronation from limited dorsiflexion and weak foot muscles
- Knee Pain: Many cases of runner's knee trace back to ankle and foot dysfunction
- Hip and Lower Back Pain: The back is often the victim of dysfunction below
Self-Assessment: The Wall Test
Stand facing a wall with one foot about 4 inches away. Keep your heel flat and try to touch your knee to the wall. Find the point where your heel just starts to lift and measure from big toe to wall.
- Less than 4 inches: Significantly restricted—you need focused mobility work
- 4-5 inches: Mildly restricted—room for improvement
- 5+ inches: Generally adequate—maintain with regular movement
Barefoot Shoes & Toe Spacers
Barefoot shoes let the foot function naturally with wide toe boxes, zero drop, thin flexible soles, and no arch support. Research shows they can increase foot muscle size and strength, improve arch function, and enhance proprioception.
Critical caveat: Transition gradually over 6-12 months. Start with walking, progress slowly. Sudden transition causes stress fractures, plantar fascia injuries, and Achilles problems.
Toe spacers passively spread toes toward their natural position, counteracting years of narrow shoes. Start with 15-30 minutes daily and gradually increase.
Practical Protocols
Ankle Mobility (Daily):
- Ankle circles: 10 each direction, each foot
- Ankle PAILs and RAILs: 2-minute hold at end range, then 3-4 sets of PAIL (5 sec) immediately into RAIL (5 sec), building from 30% to 100% effort
- Banded ankle mobilizations: 10-15 reps each side
- Theragun on calves: 60-90 seconds per leg before running
Foot Strengthening (3-4x per week):
- Towel scrunches: 3 sets of 10-15 per foot
- Toe yoga: 10 reps each pattern, each foot
- Short foot exercise: Hold 5 seconds, 10 reps per foot
- Single-leg balance: 30-60 seconds each side
- Calf raises with full range: 3 sets of 15-20 reps
Wednesday Truth
"The ankle and foot are the foundation of your running. Limited ankle mobility forces compensation up the entire chain. Weak foot muscles leave you relying on passive structures that weren't designed to handle the load alone. But this is fixable—with consistent work over time."
About Absolute Rehabilitation & Wellness:
Located in Burlington, Ontario, we help runners build resilient bodies from the ground up. We assess the entire kinetic chain, use targeted treatment including electroacupuncture, and build progressive exercise programs addressing all deficits.
📞 Call our Burlington clinic: 905.332.7000