Sports science, distilled.
Summaries and analysis of key research papers in sports science, velocity-based training, and performance measurement.
Why Knee Flexion Angle Determines Jump Height: Biomechanical Analysis of Countermovement Depth
Biomechanical research analyzing how knee flexion angle in countermovement jumps impacts jump height. Optimal depth, individual variation, and IMU measurement.
Why Rotational Power Asymmetry Matters: Injury Risk and Performance in Throwing and Striking Sports
Rotational power asymmetry above 15% triples injury risk in throwing sports. Review longitudinal IMU data, validated thresholds, and corrective protocols.
Why 30% Velocity Loss Is the Best VBT Cutoff: A Meta-Analysis of Pareja-Blanco and Beyond
30% velocity loss is the optimal VBT cutoff for balancing hypertrophy and power. Review the Pareja-Blanco et al. dataset and how to apply VL30 with an 800Hz.
Why Rep-by-Rep Velocity Stabilization Matters: Reliability and Adaptation Signals in VBT
When inter-rep CV converges below 5%, neuromuscular adaptation is taking hold. A research-based look at velocity stabilization through 800Hz IMU data.
Why Warmup Jumps Predict Performance: The Science of Neuromuscular Readiness
Discover how warmup jump height and RSI fluctuations predict same-day performance, with 800Hz IMU-based protocols for neuromuscular readiness assessment.
Force Deck vs IMU: Jump Measurement Accuracy, Metric Agreement, and Field Reality
Compare force plate and 800Hz IMU jump metrics: ICC, Bland-Altman limits, error, and field practicality. A coach's tool-selection guide.
Why Bar Path Tracking Matters: 3D Kinematics and Lift Efficiency
Bar path is a strong signal for lift efficiency and injury risk. We review 3D kinematics across squat, deadlift, and clean using 800Hz IMU tracking data.
Why the Bench Press Arch Helps: ROM Reduction, Scapular Stability, and Power Transfer Biomechanics
A thoracic arch shortens ROM by 12-18% and adds 5-8% to 1RM. The biomechanics of scapular retraction and IMU bar-speed evidence for the arch.
Why Cluster Sets Outperform Straight Sets for Power: An 800Hz IMU Meta-Analysis
Why cluster sets beat straight sets for power. An 800Hz IMU meta-analysis of velocity retention, RFD, and neuromuscular fatigue across 12 studies.
Why Couplet Training Saves Time: The Neurophysiology of Antagonist Supersets
Antagonist couplets cut training time by 47% while preserving 1RM and output. Neurophysiology, 12+ studies, and 800Hz IMU verification data inside.
Why Eccentric Training Builds More Muscle: From Molecular Biology to IMU Measurement
The science behind why eccentric overload drives superior hypertrophy: mechanical tension, muscle damage, satellite cell activation, and IMU-based velocity...
Why Explosive Intent Matters on Every Rep: The Neuromechanics of Intent-Velocity-Adaptation
Even at light loads, maximal accelerative intent shifts motor unit recruitment, firing rates, and neural drive.