Justin Harris Lifting WeightsJustin Harris Lifting Weights

Smarter Nutrition
For Harder Athletes

- Bodybuilding Coach Justin Harris -
black background
Monthly Coaching
Get Fit. Eat Right. With Justin Harris.
Receive a personalized nutrition plan and monthly coaching to achieve your fitness goals.
Get Started
black background
e-books
Build Mass. Learn from the best.
Professional guides to build muscle, burn fat, and eat right. Written by Justin Harris.
Shop E-Books
Justin Harris Bodybuilder and Troponin Nutrition Owner

Start Training Hard

Crush Your Bodybuilding goals!

Train with top-level competitive bodybuilder and powerlifter, Justin Harris and Team Troponin.

Learn More

What Is Troponin Nutrition?

Troponin (tro-po'-nin) is a complex of proteins that is integral to muscle contraction. Troponin is attached to tropomyosin (another type of protein) and lies within the groove between actin (muscle) filaments. In a relaxed muscle, tropomyosin blocks the attachment of cross bridges to actin, thus preventing contraction. When the muscle cell is stimulated to contract, mechanisms cause the concentration of calcium in the sarcoplasm to rise. Some of this calcium attaches to troponin, causing a conformational change that moves troponin and tropomyosin out of the way so that the cross bridges can attach to actin and produce muscle contraction. Without troponin, there can be no muscular contraction.