Internal Strength Model (ISM®)

What is the ISM®?

The "ISM Internal Strength Model," which stands for "Internal Strength Model," is a training philosophy that prioritizes the internal mechanics and function of the body as the primary driver of movement, focusing on building strength from within the joints and connective tissues rather than just external displays of strength, often associated with the Functional Range Systems (FRS) approach to exercise.

Focus on internal function

Unlike traditional strength training which often emphasizes external movements like lifting heavy weights, the ISM model emphasizes training the internal structures like joints, ligaments, and fascia to optimize movement quality and prevent injury.

Movement originates internally

This model believes that all movement is initiated from within the body, so training should focus on developing proper internal alignment and stability before progressing to external movements.

Connective tissue training

The ISM places a significant emphasis on training connective tissues like ligaments and tendons, considering them crucial for joint stability and overall strength.

Joint space awareness

The model emphasizes training to maintain optimal joint space and mobility, allowing for full range of motion without compromising stability.

Who is associated with the ISM?

Dr. Andreo Spina: Considered the primary developer of the FRS Internal Strength Model, promoting the idea of training the internal system to enhance external movement capabilities.