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Muscle Hypertrophy: Specific Adaptations for Endurance and Strength

Explore different types of hypertrophy and their impact on muscle endurance and strength. Learn how specific adaptations affect muscle growth and performance. Visit our website for in-depth insights.

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Muscle Hypertrophy: Specific Adaptations for Endurance and Strength

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  1. Specificity-Review of Possible Adaptations • Hypertrophy: Increase in cross-sectional area • Sarcoplasmic Hypertrophy • An increase in the volume of the non contractile protein and semi-fluid plasma between muscle fibers • RESULTMore endurance, but no increase in strength with realized decrease in relative strength • Sarcomeric Hypertrophy • An increase in the number and size of contractile units per myofibril • RESULTParallel growth results in an increase in strength; whereas series growth results in increased ROM—strength results from parallel growth are correlated with an increase in myofibril density and relative strength www.athletedevelopmentsystems.com

  2. Specificity-Review of Possible Adaptations • Hyperplasia • Sarcoplasmic hyperplasia An increase in the number sarcoplasmic organelles within the fiber • RESULT Increased endurance • Myofibrillar-mitochondrial hyperplasia An increase in the number of myofibrils and mitochondria per muscle fiber • RESULT (typically) Increased strength • Increase in the actual number of fibers per muscle, growing body of indirect evidence, but little to no direct evidence www.athletedevelopmentsystems.com

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