Athletic Performance & Power

RFD is arguably the most important metric in sport performance. It measures how quickly an athlete can develop force from zero to peak. Why RFD matters more than max strength in sport: • A sprinter's foot contacts the ground for 80-100ms • A boxer's punch takes 60-100ms • Peak force in these timeframes is never reached—only early-phase force matters Training RFD requires specific loading strategies: • Ballistic Training: Throwing, jumping, and striking movements where you actually release or leave the ground. Intent to accelerate through the entire range. • Olympic Lifts: Clean, snatch, and their derivatives. The second pull in a clean develops peak power output. • Contrast Training: Heavy set (85%+ 1RM) immediately followed by explosive set (30% 1RM or bodyweight). Post-activation potentiation (PAP) enhances neural drive. • Reactive Strength: Plyometrics that exploit the stretch-shortening cycle—the brief eccentric-to-concentric transition that stores and releases elastic energy.

Plyometrics train the stretch-shortening cycle (SSC): a rapid eccentric loading followed immediately by a concentric contraction. This cycle exploits both elastic energy storage in tendons and the myotatic stretch reflex. Progression hierarchy: 1. Low-Intensity: Pogo jumps, skipping, line hops (ground contact <250ms) 2. Moderate: Box jumps, broad jumps, lateral bounds (200-400ms) 3. High-Intensity: Depth jumps, single-leg hops, hurdle jumps (100-200ms) 4. Reactive: Drop jumps from increasing heights, combination sequences Programming guidelines (NSCA): • Beginner: 80-100 contacts per session, 2x/week • Intermediate: 100-120 contacts, 2-3x/week • Advanced: 120-140 contacts, 3-4x/week • 48-72 hours recovery between plyometric sessions • Quality over quantity—stop when ground contact time increases (fatigue = injury risk) Prerequisite: Athletes should be able to squat 1.5x bodyweight before high-intensity plyometrics (NSCA recommendation).

Sprint speed is a product of stride length × stride frequency. Elite training focuses on both: • Acceleration Phase (0-30m): Forward lean, powerful hip extension, aggressive arm drive. Ground contact time is longest here. Trained with sled pushes, hill sprints, and heavy resisted sprints. • Maximum Velocity (30-60m): Upright posture, hip height maximized, foot strikes under center of mass. Trained with fly-in sprints, overspeed running, and wicket drills. • Deceleration: Often neglected but accounts for the majority of non-contact ACL injuries. Requires eccentric strength (especially quadriceps and hamstrings) and proper mechanics (hips back, center of mass lowered, wide base). Agility is NOT just speed with direction changes. True agility includes a cognitive component—reading and reacting to stimuli. Programmed cone drills train change-of-direction speed (CODS), not agility. Add reactive elements (partner mirror drills, ball drops, light boards) for true agility development.

Athletic performance requires systematic periodization—you can't train everything at once: • General Preparatory Phase (GPP): Build broad fitness base. Higher volume, lower intensity. Hypertrophy, general strength, aerobic capacity. • Specific Preparatory Phase (SPP): Shift toward sport-specific qualities. Increase intensity, add power and speed work. Reduce volume. • Competition Phase: Maintain strength, emphasize speed and power. Minimal volume, maximum intensity and quality. Taper for peak performance. • Transition Phase: Active recovery. Address accumulated fatigue, corrective work, psychological refreshment. Block Periodization (Issurin): Concentrate training qualities into 2-4 week blocks. Block 1: Accumulation (volume + hypertrophy). Block 2: Transmutation (strength + power). Block 3: Realization (speed + peaking). Key principle: strength underpins everything. Never drop strength training entirely during any phase—it decays fastest and takes longest to rebuild.