Amplitude Parcial vs. Total: O Que o Estudo de Pedrosa Revela Sobre Hipertrofia do Quadríceps

Range of Motion and Quadriceps Hypertrophy — the study by Pedrosa et al. challenges the classic dogma of greater range of motion, greater results. 🎯 In this video lesson, Professor Dr. João Moura rigorously analyzes the findings of the study that compared different ranges of motion on the leg extension machine and their effects on regional quadriceps hypertrophy — with direct implications for strength training prescription. 📊 WHAT YOU WILL LEARN: • Why partial range of motion in the most elongated position outperformed full range of motion in hypertrophy • The role of stretching under load in the hypertrophic process • How local muscle hypoxia potentiates metabolic stress • Regional differences in hypertrophy between rectus femoris and vastus lateralis • How to apply undulating periodization by range of motion in prescription 🧠 SCIENTIFIC ANALYSIS OF THE STUDY: Pedrosa and colleagues divided 45 untrained women into 4 training groups on the leg extension machine for 12 weeks: initial partial range of motion (most elongated muscle), final partial range of motion (most shortened muscle), full range of motion (70°), and alternating between partial ranges of motion. Hypertrophy was measured by ultrasound at 4 points along the femur (40%, 50%, 60%, and 70% of the hip-knee distance). The group that trained with partial range of motion in the most elongated position (beginning of the concentric phase, 100° to 65°) generated greater hypertrophy—especially in the distal region of the quadriceps (near the knee). The mechanism involves: the highest possible weight in this range of motion, greater stretching of the fibers throughout the set, and a greater degree of intramuscular hypoxia resulting from the collapse of microvessels during stretching under load. ⚙️ PRACTICAL APPLICATION IN PRESCRIPTION: • Maximum distal hypertrophy: prioritize partial ranges of motion in the most elongated position (initial concentric phase) • Specific angular strength: train at the exact angle where you want to gain strength — the gains are highly specific • Balanced development: alternate between initial and final partial ranges of motion in consecutive sessions (undulating periodization by range of motion) • Athletes in stagnation: variation in partial ranges of motion may be the necessary shock strategy ⏱️ TIMESTAMPS: 0:00 Introduction and contextualization of the study 1:30 Methodology: groups, protocol and measurement 4:00 Analysis of the angles and ranges of motion used 7:00 Results: regional quadriceps hypertrophy 11:00 Why did the partial range of motion surpass the total range of motion? 3:00 PM Strength and Angular Specificity Results 6:00 PM Pedrosa's Practical Framework for Prescription 9:00 PM Final Applications and Undulating Periodization #MuscleHypertrophy #RangeOfMotion #StrengthTraining #LegExtensionMachine #Quadriceps #ExercisePhysiology #Biomechanics #ExercisePrescription #PersonalTrainer #ScientificStudy #TrainingWithScience #StretchingUnderLoad #UndulatingPeriodization #ProfDrJoãoMoura #MovementSciences 📲 Connect Follow me:   / joaomouratef     / treinoemfoco     / eksyapp      / @canaltreinoemfoco      / @eksyapp   Training and in-depth study for Personal Trainers - https://www.treinoemfoco.com.br/play/ Assessment and Prescription App - https://eksy.com.br/