kinetic chain

Definition

The interconnected system of body segments and joints that work together to produce movement. The reason your knee pain might actually be a hip problem, and why bodies are annoyingly complicated.

Example Usage

My physical therapist explained that my shoulder issue is actually a kinetic chain problem starting at my feet, which is just rude.

Origin

Borrowed from engineering; applied to human movement by Arthur Steindler in 1955

Fun Fact

Problems in the kinetic chain often manifest far from their source—weak glutes can cause knee pain, and poor ankle mobility can affect your squat form.

Source: Biomechanics and physical therapy literature

Related Terms

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conjugate periodization

A training method where multiple qualities (max effort, dynamic effort, repetition method) are trained simultaneously in the same week rather than in sequential blocks. It's the Westside Barbell approach that treats periodization like a mixed plate rather than a tasting menu.

⚽ Sports / Fitness

Advanced

autoregulation

A training approach where intensity and volume are adjusted daily based on current performance and recovery rather than following a rigid plan. The art of listening to your body instead of blindly following what a spreadsheet demands.

⚽ Sports / Fitness

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periodization phases

The specific training blocks in a periodized program: base building, strength, power, peak, and recovery. It's a systematic way to get stronger instead of just randomly doing hard workouts until you get injured.

⚽ Sports / Fitness

Beginner

training split

The organization of your workout schedule by muscle groups or movement patterns across different days. It's how you scientifically justify why today isn't the day for that body part you're trying to avoid training.

⚽ Sports / Fitness

Advanced

lactate threshold

The exercise intensity at which lactate begins accumulating in your blood faster than your body can clear it. The invisible line between 'I can do this all day' and 'I need to stop immediately.'

⚽ Sports / Fitness

Intermediate

training max

A submaximal weight used for program calculations, typically 85-90% of your true one-rep max, because programming off your absolute maximum is how you get injured and disappointed simultaneously. It's the humble approach to getting stronger.

⚽ Sports / Fitness

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