The Training Load Friction Model (Proprietary)

A Framework for Managing Stress, Recovery and Adaptation

Most training models focus on how much work is done. The Training Load Friction Model focuses on how efficiently that work is absorbed.

Training load does not exist in isolation. The same workout can drive adaptation in one context and create breakdown in another. The difference is friction.

This model explains why training outcomes vary even when programs look identical on paper.

What the Model Represents

The Training Load Friction Model describes training stress as the interaction between two forces:

• Training Load - the external and internal demands placed on the athlete (volume, intensity, density, frequency, effort).

• Friction - the resistance that limits how effectively that load can be expressed, tolerated, and recovered from.

Friction includes:

• Accumulated fatigue

• Poor sleep or inconsistent recovery

• Psychological stress (work, life, pressure)

• Nutritional shortfalls or dehydration

• Joint irritation, soreness, or low-grade injury

• Environmental stressors (heat, cold, travel, shift work)

As friction increases, the cost of producing the same output rises.

Why Friction Changes Training Outcomes

When friction is low, training load is absorbed efficiently. Movement quality stays high, recovery is predictable, and adaptation occurs as intended.

When friction is high, the same training load:

• Feels harder than expected

• Produces disproportionate fatigue

• Degrades technique and coordination

• Extends recovery time

• Increases injury risk

This explains why athletes can suddenly struggle with workloads they previously handled without issue. Fitness hasn’t disappeared, friction has increased.

Fitness vs Friction

A key insight of the model is that fitness and friction are independent variables.

An athlete can be:

• Highly fit but high-friction (poor sleep, high stress, recovery debt)

• Moderately fit but low-friction (well-recovered, consistent habits)

In practice, the second athlete often performs better on that day.

This is why programming solely off fitness metrics, without accounting for readiness and friction, leads to stalled progress and unnecessary breakdown.

Practical Coaching Application

The Training Load Friction Model changes how training decisions are made:

• Load does not need to be reduced every time performance dips

• Volume and intensity should be adjusted based on friction, not emotion

• Some days require pushing load

• Other days require preserving quality

Effective programming aims to:

• Apply enough load to stimulate adaptation

• Minimize unnecessary friction that blunts the stimulus

This approach allows athletes to train consistently without relying on extremes.

Why This Matters for Tactical and High-Stress Athletes

Tactical athletes operate in environments where friction is rarely low. Sleep disruption, irregular schedules, psychological stress, and environmental demands are the norm.

The Training Load Friction Model acknowledges this reality and provides a framework for:

• Sustaining performance under stress

• Reducing injury risk without undertraining

• Maintaining readiness alongside long-term fitness development

It explains why rigid, percentage-based programs often fail in real-world settings.

Key Takeaway

Training load drives adaptation.
Friction determines whether that adaptation actually occurs.

Better training outcomes don’t come from blindly adding load. They come from understanding when friction is low enough to push and when it must be managed to preserve progress.

The most effective programs don’t eliminate friction, they account for it.

What Is Tactical Conditioning? | What Is Training Load? | What Is Tactical Readiness?