Threshold #160 | Strength Periodisation for Endurance Athletes: Building Power Gradually 💪

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Strength training is no longer optional for endurance athletes — it’s essential. It improves running economy, increases force production, reduces injury risk, enhances neural drive, and unlocks the kind of durability that keeps performance rising year after year. But strength only works when it’s structured. Random lifting produces random outcomes. Well-applied periodisation, however, transforms your body into a more efficient, powerful, and resilient engine.

Endurance athletes don’t need to lift like powerlifters, nor train like bodybuilders. They need a clear progression: build tissue capacity → develop maximal strength → convert strength into power → maintain strength efficiently through the racing season. When executed well, this sequence not only complements endurance work — it amplifies it.

So how do you build strength that actually translates to performance? And how do you layer it into your yearly training cycle without impairing aerobic development?

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TL;DR

  • Strength periodisation improves durability, running economy, and power output.

  • Four phases: General Prep → Max Strength → Conversion to Power → In-Season Maintenance.

  • The goal isn’t bulk — it’s neural efficiency, tendon health, and force transfer.

The Main Feature

Leg 1: Why Strength Training Works for Endurance — The Physiology Behind the Gains

Endurance performance is governed by far more than aerobic efficiency. You must also generate force, stabilise movement, and reuse elastic energy with minimal metabolic cost. Strength training enhances all these systems.

1. Improved Neuromuscular Recruitment

Maximal strength work increases the number of motor units you can recruit. This means:

  • more force with less effort

  • improved stride mechanics

  • lower oxygen cost per step

Running economy improves because your body becomes more mechanically efficient.

2. Tendon Stiffness and Elastic Return

Tendons adapt slowly but profoundly. As they stiffen (in a positive sense), they return more elastic energy with each stride. This improves economy and reduces muscular fatigue.

This is why a stronger Achilles is often more impactful than stronger quads.

3. Injury Prevention Through Load Capacity

Strength increases the robustness of:

  • connective tissue

  • joint stability

  • bone density

  • muscular support

Heavy lifting creates a protective buffer against high-volume training.

4. Rate of Force Development (RFD)

Cycling sprints, running hill surges, mid-race accelerations — these rely on fast force production. Strength training, especially maximal and power phases, enhances RFD and enables cleaner, more explosive movement.

Strength isn’t just about producing force — it’s about producing force quickly.

T1: Mental Preparation

Strength training demands intention. Unlike endurance sessions that reward grinding, strength rewards precision. Treat every rep as a rehearsal for force production. Quality over quantity. Control over chaos. Strength isn’t built by fatigue — it’s built by focus.

Threshold Performance Club

Leg 2: The Four Phases of Strength Periodisation for Endurance Athletes

Phase 1: General Preparation (4–6 weeks)

Purpose: Build foundational movement quality and tissue capacity.
Intensity: Low to moderate.
Focus: Technique, range of motion, stability.

Key movements:

  • Goblet squats

  • Split squats

  • Hip hinge patterns

  • Glute bridges

  • Core stability (anti-rotation, anti-extension)

Why it matters: This prepares joints, tendons, and nervous system for heavier loads later.

Phase 2: Maximal Strength (6–10 weeks)

Purpose: Increase neural drive and force production without adding unnecessary muscle mass.
Intensity: Heavy (80–90% 1RM).
Rep ranges: 3–6 reps, long rest periods.

Key movements:

  • Back squat or front squat

  • Deadlift or trap bar deadlift

  • Weighted step-up

  • Heavy calf raises

  • Pull-ups or weighted rows

Why it matters: Maximal strength improves motor unit recruitment and builds the mechanical foundation for later power development.

This is where endurance athletes make their biggest performance jump.

Phase 3: Conversion to Power (4–6 weeks)

Purpose: Translate strength into speed and elastic efficiency.
Intensity: Moderate loads, high velocity.
Rep ranges: 3–6 per set, focusing on explosive intent.

Key movements:

  • Box jumps

  • Bounds

  • Medicine ball throws

  • Kettlebell swings

  • Light Olympic lift variations (if trained)

Why it matters: Your body learns to produce force quickly. This phase sharpens stride mechanics, cycling surges, and hill acceleration.

Power is the bridge between strength and real-world endurance performance.

Phase 4: In-Season Maintenance (All race season)

Purpose: Maintain strength without interfering with performance.
Intensity: Moderate to heavy, but low volume.
Frequency: 1–2 sessions per week.

Simple, effective template:

  • 2 sets of 3–5 reps (heavy) on squats or deadlifts

  • 2 sets of 6–8 step-ups or lunges

  • 2 sets of calf raises

  • 1–2 plyometric drills
    Done. In 20 minutes.

Why it matters: Strength decays quickly if dropped entirely. This keeps neural drive, tendon stiffness, and force transfer stable during peak training.

T2: Enhance your performance

The smartest athletes don’t just train hard — they dial in their nutrition.

So let me save you months of frustration: stop guessing your diet.

You might think I’m about to pitch a fancy supplement stack. Think again — just grab the  Nutrition Plan for Training and follow it step by step.

This isn’t a cookie-cutter meal plan. It’s a proven system designed to help you shred fat, build lean muscle, and perform better — with clear macros, calorie advice, and simple strategies you can actually stick to.

We’ve refined this with athletes pushing for real results — and now it’s yours for £29.99 £19.99.

If you’re serious about your goals, start here.

Leg 3: Integrating Strength Into Your Endurance Training Without Burnout

Strength works brilliantly — unless you combine it poorly with endurance load. Here’s how to integrate it:

1. Pair Strength With Easy Days

Avoid stacking strength on top of key sessions.
Strength → easy run the next day = best pairing.

2. Keep Heavy Strength Away From Intensity Blocks

Heavy strength + threshold intervals = recipe for neural fatigue.

Strength belongs in base and early build phases, not peak blocks.

3. Use Microdosing When Volume Peaks

Short, 15–20 minute sessions maintain strength extremely well with minimal fatigue.

4. Prioritise Torso and Tendon Training

Strength for endurance isn’t just legs:

  • stable hips

  • strong trunk

  • resilient Achilles

  • functional feet

This reduces energy waste during movement.

5. Monitor Fatigue Closely

If stride feels heavy, form breaks down, or soreness lingers → reduce load.
Strength must support endurance, not compete with it.

Strength periodisation is a long game. Progress compounds across seasons when structured correctly.

Workout of the Week: Maximal Strength Builder for Endurance

Goal: Improve neural drive, tendon resiliency, and force output without excessive fatigue.

Warm-Up (10 min)

  • Hip mobility

  • Glute activation

  • Light goblet squats (2 x 10)

Main Set (30 min)

  1. Trap Bar Deadlift — 4 x 4 (heavy, but crisp technique)

  2. Split Squat (weighted) — 3 x 5 each leg

  3. Standing Calf Raise (slow eccentric) — 3 x 8

  4. Med Ball Chest Throw or Kettlebell Swing — 3 x 6 (explosive)

Cool Down (10 min)

  • Calf stretching

  • Hamstring mobility

  • Light diaphragmatic breathing

Why it works:
This session develops maximal strength and explosive capability while reinforcing tendon stiffness — all essential for efficient running and cycling mechanics.

Conclusion

Strength periodisation gives endurance athletes what they’ve always lacked: power, resilience, and mechanical efficiency. When you build strength deliberately and sequence it correctly, your stride becomes more economical, your surges become sharper, your body becomes more durable, and your performance rating rises across every domain.

Strength doesn’t replace endurance — it elevates it..

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Learn from other sources:

🧠 Thrive25 is a 5 minute newsletter dedicated to health & longevity. Find out how to live smarter, better and longer.

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🎖️ Level up your discipline listening to retired Navy SEAL Jocko Willink sharing advice.

Coaches Corner

Great coaches think in seasons, not sessions. They build stability first, then strength, then power, before shifting into maintenance during peak periods. Strength phases must align with endurance cycles, ensuring the right stimulus at the right time. Movement quality matters more than the weight on the bar, and athletes should avoid heavy lifting during high-mileage or high-intensity weeks. Strength is a force multiplier — but only when programmed with disciplined structure and long-term vision.

Threshold Performance Coach

TRAINING PLANS TO HELP YOU PERFORM

The smartest athletes don’t just train hard — they dial in their nutrition.

So let me save you months of frustration: stop guessing your diet.

You might think I’m about to pitch a fancy supplement stack. Think again — just grab the  Nutrition Plan for Training and follow it step by step.

This isn’t a cookie-cutter meal plan. It’s a proven system designed to help you shred fat, build lean muscle, and perform better — with clear macros, calorie advice, and simple strategies you can actually stick to.

We’ve refined this with athletes pushing for real results — and now it’s yours for £29.99 £19.99.

If you’re serious about your goals, start here.

Workout of the Week: The Economy Engine Session

Total Duration: 50–60 minutes
Goal: Improve neuromuscular coordination, elastic return, and running mechanics.

Warm-Up (10 min)

  • Easy jog

  • 5 minutes mobility

  • 3 x 20s strides (full recovery)

Drill + Plyo Set (15 min)

Repeat twice:

  • A-skips – 40m

  • B-skips – 40m

  • Bounding – 20m

  • 10 low box jumps

  • 20 pogo hops

Main Set (20 min)

4 x 4 minutes steady (Zone 2–3) focusing on:

  • upright posture

  • quick cadence

  • minimal vertical oscillation

2 minutes easy jog between reps

Cool Down (10 min)

  • Light jog

  • Breathing reset

  • Calf + hip flexor mobility

Why it works:
This sequence hardwires efficient mechanics, improves stiffness, and reinforces economy at sub-threshold intensities — perfect early-season neural conditioning.

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Robert

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