periodization-coach

name	periodization-coach
description	Periodization framework for trail/mountain running based on Training for the Uphill Athlete methodology (House, Jornet, Johnston). Covers training phases, zone distribution, progression rules, strength integration, and vertical gain planning.

Periodization Coach

When to use this skill

Use this skill when the request involves:

• Creating multi-week training plans (Transition/Base/Specific/Taper phases)
• Determining zone distribution and intensity progression
• Planning strength training cycles and integration with running
• Vertical gain progression and race-specific preparation
• Evaluating readiness to add intensity (Z3/Z4)
• Establishing training volume progression rules

Core methodology: Training for the Uphill Athlete

Based on Steve House, Kilian Jornet, and Scott Johnston's approach to mountain/trail endurance training.

Key Planning Principles

Aerobic Base Development

• 80-90% of annual volume in Zone 1-2 (below AeT — aerobic threshold)
• Repeatability rule: if the athlete can repeat yesterday's workout today, tomorrow, and the day after — the load is correct
• Metric priority (in order of importance): time on feet → vertical gain → distance

AeT-LT Gap Assessment for Focus Selection

Calculation: AeT-LT gap (%) = (LT - AeT) / AeT × 100

• Gap >20%: pronounced aerobic deficit

  • → 100% focus on Z1-Z2, no Z3-Z4 for at least 12 weeks

• Gap 10-20%: moderate deficit

  • → 95% Z1-Z2, can add strides/hill sprints (neuromuscular work without lactate load)

• Gap <10%: good aerobic base

  • → Z3 can be introduced after 6-8 weeks of consistent base

High-Intensity Training

Criteria for Readiness to Add Z3

Add Zone 3 (Tempo/SteadyState) ONLY after meeting ALL criteria:

1. Minimum 6-8 weeks of consistent aerobic base (no gaps >3 consecutive days)
2. AeT-LT gap <10% (otherwise continue base work)
3. Stable CTL (non-declining trend) and positive or neutral TSB
4. No signs of overtraining: resting HR normal, sleep >7h, no chronic fatigue

Intensity Progression

• Zone 3: start at 5% of weekly volume, increase by 2-3% every 2-3 weeks (max ~15% in Specific Period)
• Zone 4 (Intervals): add only when Z3 is ~10% of weekly volume AND the athlete has adapted to Z3 (2-4 weeks)
• When adding intensity: reduce Zone 2, maintain or increase Zone 1 (total Z1+Z2+Z3 volume may decrease slightly for adaptation)

Intensity Zones (Detailed Description)

Recovery: very easy, effortless conversation

Zone 1: easy, nasal breathing possible

Zone 2: moderate, BELOW AeT (upper Z2 boundary = AeT HR), full sentences, nasal breathing at the limit

• Typical Z2 HR cap: AeT HR (e.g., 155 bpm if AeT=155)
• Z2 pace should feel "comfortably moderate", not "easy" (that's Z1)

Zone 3: tempo, between AeT and LT (lactate threshold), 5-7 words

• Lower boundary: AeT HR + 1 bpm
• Upper boundary: LT HR
• Pace feels "comfortably hard", sustainable but requires focus

Zone 4: intervals, above LT, 2-3 words

Zone 5: maximal, sprints, one word

Energy Systems and Adaptations

Aerobic System (Zone 1-2):

• Mitochondrial development
• Capillarization: long runs
• Fat metabolism
• Mitochondrial density: base endurance

Lactate Threshold (Zone 3):

• Increased sustainable power
• Lactate threshold: sustainable speed

VO2max (Zone 4):

• Maximum aerobic power
• Stroke volume: increases through Zone 4

Anaerobic Power (Zone 5):

• Hill sprints
• Neuromuscular power

Vertical Gain

Progression for beginners:

• Start at 1/3 - 1/2 of the target race vertical gain
• Peak: at least the full race vertical gain in two weeks of the late base period
• In recovery weeks, reduce by 40-60%

Safety rule:

• Do not increase vertical gain and volume simultaneously by more than 5% each
• After significant vertical gain (>1500m) — next day Z1 or rest

Strength Training

Progression Principles (source: Training for the Uphill Athlete, ch.6-8)

General Strength (Stage 1→2→3):

• Master Stage 1 completely before moving to Stage 2
• Transition criterion: performing all Stage exercises with correct technique without compensation
• 2 times per week in Transition Period
• Separate from key running workouts: minimum 6 hours, ideally on different days

Max Strength (early Base Period):

• 2x/week, 3-5 sets × 3-6 reps at 85-95% of 1RM
• Reduce to 1x/week in late Base as running volume increases

Muscular Endurance (ME) in the pre-race specific phase:

• ME workouts: hill sprints, long climbs at race effort, strength circuits
• Frequency: 1-2x/week, integrate into running workouts when possible

Injury Prevention Connection

• Foot/ankle strength (see Science of Running) mandatory when volume >8h/week
• Hip/glute stability important for descents and technical terrain
• Core stability supports running economy on long distances

Periodization (Training Cycle Phases)

Transition Period (2-8 weeks)

Recovery, general strength, aerobic base

• Volume: 50-70% of peak
• Intensity: Z1-Z2 only
• Strength: General Strength 2x/week (Stage 1→2→3)

Base Period (8-16+ weeks)

Building Zone 1-2 volume, adding Zone 3

Early Base (4-8 wks):

• Focus on Z1-Z2 volume
• Strength: Max Strength 2x/week

Late Base (4-8 wks):

• Peak volume
• Introduce Z3 (5→10%)
• Reduce strength to 1x/week

Specific Period (4-8 weeks)

Zone 4 intervals, race-specific workouts

• Volume: 85-95% of peak
• Z3: ~10-15%, Z4: 5-10% (starting at 2-3%)
• Strength: Muscular Endurance (ME) 1-2x/week or maintenance

Taper (7-21 days depending on race distance)

Volume reduction while maintaining neuromuscular tone

• 50K and under: 7-10 days
• 100K: 10-14 days
• 100+ miles: 14-21 days
• Reduce volume by 40-60%, maintain 1-2 short intense sessions to preserve neuromuscular tone

Detailed protocols: see "Taper Protocols" section below

Load Progression Rules

Weekly Volume Increase

NEVER increase volume >7-10% per week without explicit request

• The 7-10% rule applies to TIME (hours), not distance or TSS
• After a recovery week, returning to pre-recovery level is allowed (not considered an increase)
• After illness/injury: start at 50% of the last healthy volume, progress by 10-15%/week

Recovery Weeks

• Every 3-4 weeks reduce volume by 40-60%
• Maintain training frequency (number of days)
• Goal: adaptation, supercompensation, reducing overtraining risk

Additions from Ultrarunning Training Essentials (Jason Koop)

Long-range planning (Chapter 10)

• Plan the macrocycle as: Base → Build/Specific → Peak/Taper
• Set key B/A races well in advance
• Break into mesocycles (4-8 weeks): each phase has target metrics (hours/vertical/key workouts)
• Verify progression sustainability (not >7-10% time/week) and correlate with CTL/TSB before introducing a new intensity block

Short-range planning (Chapter 12)

Weekly template (example for 5-day schedule):

• Mon: REST or easy activity
• Tue: Quality (intervals / tempo / hill repeats)
• Wed: Recovery run + strength
• Thu: Endurance run (Z2) or steady effort
• Fri: REST or easy + mobility
• Sat: Long endurance run (Time on feet + vertical)
• Sun: Recovery run or easy cross-training

Place key sessions so that there is at least 48-72h between them for recovery.

Strength training specifics (Chapter 11)

• Maintain general strength 1-2x/week in Transition
• Max strength 2x/week (early Base) — 3-5 sets x 3-6 reps @85-95% 1RM
• Before the race-specific phase, transition strength to ME/endurance: hill-specific circuits, single-leg strength, core and ankle work
• Include mobility and prehab (foot/ankle, hips) as a regular part of the program

Methodological Sources

Training for the Uphill Athlete (House, Jornet, Johnston)

• Primary source: periodization, aerobic base, strength training (Stage 1-3), vertical gain
• Link: knowledge/Training for the Uphill Athlete.txt
• Key sections: «Aerobic Base Development», «Periodization», «Strength and the Uphill Athlete»

Ultrarunning Training Essentials (Jason Koop)

• Additional: practical planning (long-range/short-range), weekly schedule templates, strength training details
• Link: knowledge/Ultrarunning Training Essentials.txt
• Key chapters: CH.6 (Tracking), CH.10 (Long-range planning), CH.11 (Strength), CH.12 (Short-range planning)

Key Messages (Training Philosophy)

• "Volume is the key" — aerobic base volume matters more than intensity
• "If in doubt, go long and easy" — when in doubt, choose long easy runs
• "Listen to your body" — fatigue is a signal, don't ignore it (Kilian Jornet: "Sometimes you realize you need to stop before the prescribed time is over")
• "Training is not competition" — don't turn every workout into a race

Taper Protocols (Evidence-Based)

Source: Meta-analysis by Wang et al. (2023) - Effects of tapering on performance in endurance athletes (PLOS ONE)

Optimal taper strategy

Volume reduction:

• 41-60% reduction from peak volume = optimal performance gains (SMD = 1.28)
• Example: Peak week 10 hours → Taper week 1: 4-5 hours → Taper week 2: 5-6 hours

Intensity & Frequency:

• Maintain 100% training intensity (same HR zones, same pace targets)
• Maintain 100% training frequency (same number of sessions per week)
• Rationale: Preserves neuromuscular adaptations while reducing fatigue

Duration:

• 8-14 days optimal for most endurance athletes
• 7 days: acceptable for shorter events (<50K)
• 15-21 days: acceptable for 100-mile+ events or masters athletes (>45 years)
• <7 days: insufficient recovery

• 21 days: risk of detraining

Taper type:

• Progressive taper > Step taper
• Progressive: Gradual linear reduction (e.g., 100%→80%→60%→50% over 2 weeks)
• Step: Abrupt reduction (e.g., 100%→50% immediately)

Pre-taper overload

Critical insight: Tapering combined with pre-taper overload training had MORE significant effect on performance than conventional tapering (P < 0.05)

Implementation:

• Final hard block (2-3 weeks before taper): Push volume to 105-110% of average
• Include 1-2 key race-specific sessions (e.g., long run with race pace segments, big vertical)
• Then: Begin taper as planned

Rationale: Greater accumulated fatigue → greater supercompensation during taper

Week-by-week taper structure (example for 2-week taper)

Peak week (Week -3 before race):

• Volume: 100% (e.g., 10 hours)
• Include key sessions: long run, tempo, intervals
• This is pre-taper overload week

Taper Week 1 (Week -2):

• Volume: 50-60% (5-6 hours)
• Maintain intensity: Keep 1 tempo session (shortened to 20-30 min)
• Long run: Cut by 40-50% (e.g., 20K → 10-12K)
• Frequency: Same number of days (e.g., 5 days if peak was 5 days)

Taper Week 2 (Week -1):

• Volume: 60-70% (6-7 hours) — slightly UP from Week 1 (progressive taper)
• Maintain 1 short tempo/intervals (15-20 min)
• Long run: Easy 60-90 min max
• Last hard session: 3-4 days before race

Final 2-3 days:

• Only easy runs (20-30 min Z1)
• Day before race: 20 min easy or complete rest (athlete preference)

Source: Wang et al. (2023), PLOS ONE, https://doi.org/10.1371/journal.pone.0282838

Back-to-Back Long Runs

Source: Runners Connect (2025), recent ultra-endurance research synthesis

Scientific rationale

73% of successful first-time 50K finishers used back-to-back long runs in preparation.

Unique adaptations not replicated by single long runs:

1. Enhanced fat oxidation: Starting run with low glycogen promotes PDK4 upregulation → ↑ reliance on fat as fuel
2. Glycogen-sparing capacity: Body learns to maintain performance with depleted CHO stores
3. Neuromuscular fatigue resistance: Maintaining running economy and coordination despite accumulated fatigue

Key insight: These adaptations are specific to ultra-distance events (>4 hours) and cannot be replicated by single long runs.

Protocol (for recreational ultramarathoners)

Frequency:

• 1x per 2-3 weeks (NOT every weekend!)
• Rationale: High cumulative stress requires adequate recovery between cycles

Structure:

• Saturday: 15-25 km (or 75% of current single long run distance)
• Sunday: 12-20 km (or 50% of Saturday distance)
• Combined distance: Start at 30 km, progress to 40-50 km max

Intensity (CRITICAL):

• Both days: 65-75% max HR (conversational pace, Z1-Z2)
• Common mistake: Running too hard defeats the purpose
• Rationale: Need to preserve metabolic stress while minimizing injury risk

Progression:

• +10% combined distance every 2-3 weeks (not weekly!)
• Example:
  • Week 1: 15+15=30 km
  • Week 2: (pause - no B2B)
  • Week 3: 18+18=36 km
  • Week 4: (pause)
  • Week 5: 20+20=40 km
  • Week 6: Recovery week (no B2B)

Recovery between days (CRITICAL)

Immediate post-Saturday (first 30 min):

• 1.2 g/kg CHO (e.g., 84g for 70kg athlete)
• Examples: 2 gels + sports drink, or porridge + banana + honey

Evening Saturday:

• Normal meal (high-CHO)
• Good sleep (7-8 hours minimum)
• Optional: ice bath (controversial but may help some athletes)

Sunday morning:

• High-CHO breakfast (oatmeal + fruit, or pasta)
• Hydration

Following week:

• Monday-Wednesday: Reduce volume, easy runs only (Z1)
• Rationale: Absorb accumulated load before next quality week

When to use back-to-backs

Appropriate for:

• Athletes preparing for 50K+ events
• Current weekly volume >40 km
• Solid aerobic base (6-8 weeks consistent training)
• Build phase (8-12 weeks before race)

Not appropriate for:

• Marathon training (single long runs sufficient)
• Athletes with current weekly volume <40 km (risk of overload)
• During recovery weeks
• Within 3-4 weeks of race (taper phase)

Source: Runners Connect (2025), https://runnersconnect.net/long-runs-training/

Downhill/Eccentric Training Protocols

Source: Millet et al. (2020) - Downhill Running: What Are The Effects and How Can We Prevent/Manage Them? (Frontiers in Physiology)

Scientific basis: Repeated Bout Effect (RBE)

Key finding: Muscles adapt to eccentric loading very rapidly (1-2 exposures)

• 1st downhill bout → 2-5 days soreness (DOMS), strength loss, elevated CK
• 2nd bout (10-14 days later) → 50-80% reduction in DOMS and faster recovery

Practical implication: Pre-conditioning with downhill sessions 3-4 weeks before race is ESSENTIAL for trail athletes

Protocol: Pre-race downhill preparation

Timing:

• Session 1: 3-4 weeks before race
• Session 2: 10-14 days after Session 1 (i.e., 2-3 weeks before race)
• Optional Session 3: 7-10 days later (i.e., 10-14 days before race)

CRITICAL: Last hard downhill must be 10-14 days before race (NOT 3-7 days!)

Session structure:

• Duration: 25-30 min (Session 1), 30-35 min (Session 2)
• Grade: -6 to -8% (typical trail downhill), up to -10% for specific race prep
• Intensity: Moderate (RPE 4-5/10), NOT hard
• Recovery: Expect 48-72h soreness after Session 1 (this is NORMAL)

Example calendar for April 1 race:

• March 8-11: Session 1 (25-30 min, -6-8% grade)
• March 18-21: Session 2 (30-35 min, same or steeper grade) → minimal soreness expected
• March 25: Optional Session 3 (20-25 min, race-specific grade) → light soreness
• April 1: Race (muscles adapted, DOMS minimized)

Alternative: Eccentric strength training (if no downhill access)

Protocol:

• Frequency: 2x/week × 4-6 weeks leading to race
• Exercises:
  • Bulgarian split squats (4-5 sec eccentric phase, 1 sec concentric)
  • Step-downs with dumbbell (4-5 sec down)
  • Nordic curls (eccentric hamstring)
• Volume: 3 sets × 8-10 reps per exercise
• Rest: 60-90 sec between sets

Effectiveness: ~70% as effective as actual downhill running for RBE adaptation

Integration: Can combine with downhill sessions if geography allows (1 downhill + 1 strength per week)

Monitoring & adjustment

Expected responses:

• Session 1: Moderate-severe quad soreness 24-48h later (scale 5-7/10)
• Session 2: Mild soreness (scale 2-4/10)
• Session 3: Minimal soreness (scale 1-2/10)

Red flags:

• Soreness >7/10 or lasting >5 days → reduce grade or duration next session
• Sharp pain during session (not muscle burn) → stop immediately
• Persistent weakness after 7 days → consult physio

Source: Millet et al. (2020), Frontiers in Physiology, https://doi.org/10.3389/fphys.2020.01140

When to Refer to Other Skills

• Recovery monitoring, red flags, VO2max work: see athlete-monitoring skill
• Nutrition/fueling protocols (gut training, race-day, carb-loading): see race-nutrition skill
• Intervals.icu output format, MCP tools: see intervals-icu-integration skill
• Injury prevention, evidence-based practice: see kinesiology-foundations skill