HMS, BM EQ-Bank 117

Overview Statement:

• Power cleans and deadlifts require different interactions between skeletal, muscular and nervous systems.
• Their relationships vary in timing, force production and movement complexity.

Component Relationship 1 – Movement Speed and Neural Control:

• Power cleans require the nervous system to coordinate explosive multi-joint movements in under one second.
• This rapid timing triggers sequential muscle activation from legs to shoulders to arms.
• Deadlifts involve slower neural control allowing sustained force over 2-4 seconds.
• The speed difference reveals how neural demands change with movement velocity.
• Fast movements require precise timing while slow movements need sustained neural drive.

Component Relationship 2 – Force Transfer Through Skeleton:

• In power cleans, joints act as sequential levers transferring force upward through the body.
• This creates momentum that travels through hips, spine, shoulders and arms.
• Deadlifts use the skeletal system as a rigid framework maintaining vertical force.
• The contrast shows how skeletal function changes with movement type.
• Dynamic lifts utilise joint mobility while static lifts depend on skeletal stability.

Component Relationship 3 – Muscle Activation Patterns:

• Power clean muscles fire sequentially, each group building on the previous one’s momentum.
• This wave-like pattern enables explosive acceleration of the barbell.
• Deadlift muscles contract simultaneously to produce steady upward force.
• These patterns demonstrate how the nervous system adapts muscle control to movement demands.

Implications:

• The analysis reveals that the same three systems can interact in fundamentally different ways.
• This flexibility allows humans to perform both explosive and grinding movements effectively.
• Therefore, training programs must consider not just which systems to train, but how they should interact.