AgentSkillsCN

workout-analysis

赛后评估框架、努力程度评估、配速区间分析,以及训练分配策略。

SKILL.md
--- frontmatter
name: workout-analysis
description: Post-run assessment framework, effort evaluation, pace zone analysis, and training distribution

Workout Analysis

Post-Run Assessment Framework

When analyzing a completed run, consider:

1. Was it the right effort?

Easy Run Assessment:

  • Pace should be 1:00-1:30/km slower than threshold
  • Heart rate should be in Zone 1-2 (below 75% max HR)
  • If pace was faster than this, the run was too hard
  • Conversation test: could they talk in full sentences?
  • Common issue: "easy" runs done too fast

Long Run Assessment:

  • First half should feel comfortable
  • Pace within 30-60s/km of marathon pace is fine for experienced runners
  • Negative split (second half faster) is ideal
  • Watch for cardiac drift: HR increasing >10% at same pace indicates fatigue
  • Fueling: runs over 90 minutes should include some nutrition

Tempo/Threshold Assessment:

  • Pace should be sustainable for about 60 minutes in a race
  • Heart rate in Zone 3-4
  • "Comfortably hard" - can speak in short phrases but not sentences
  • Consistent splits (less than 5s/km variation) = good execution

Interval Assessment:

  • Target pace depends on interval length
  • 400m-800m: ~5K pace or slightly faster
  • 1000m-1600m: ~5K to 10K pace
  • Recovery should be adequate (jog, not walk to a stop)
  • Consistency across repeats more important than hitting one fast split
  • Positive splits (slowing) across intervals suggests starting too fast

2. Training Load Indicators

Acute Training Load (ATL) - last 7 days:

  • Sum of distance * intensity factor
  • Easy run: 1.0x, Tempo: 1.5x, Intervals: 2.0x, Race: 2.5x

Chronic Training Load (CTL) - last 28 days rolling average:

  • Fitness trends over time
  • CTL going up = fitness building
  • CTL going down = detraining or recovery

Training Stress Balance (TSB) = CTL - ATL:

  • Positive: rested/fresh (good for racing)
  • Negative: fatigued (building fitness)
  • Very negative (<-20): risk of overtraining

3. Weekly Distribution

80/20 Rule: ~80% of running should be easy, ~20% moderate-to-hard

How to check:

  • Count minutes at each intensity level
  • Easy/recovery: Zone 1-2 HR or conversational pace
  • Moderate: Zone 3 (tempo range)
  • Hard: Zone 4-5 (intervals, races)

If more than 25% is moderate+hard, the athlete is likely doing too much intensity.

4. Key Metrics to Flag

Cardiac Drift:

  • Compare HR in first 15 min vs last 15 min at same pace
  • Drift >10%: dehydration, heat, or insufficient fitness
  • Drift >15%: significant concern

Cadence:

  • Optimal: 170-185 spm for most runners
  • Below 160: may indicate overstriding
  • Cadence naturally increases with speed

Pace Variability in Easy Runs:

  • High variability on flat terrain = inconsistent effort
  • Suggest running by feel/HR rather than pace

Elevation Impact:

  • Adjust pace expectations for hilly runs
  • ~5-8s/km per 100m elevation gain is normal

Feedback Guidelines

When giving feedback:

  1. Lead with the positive: "Great consistency on those intervals"
  2. Be specific: Reference actual paces, distances, dates
  3. Contextualize: Compare to their typical performance, not abstract standards
  4. One key takeaway: Don't overwhelm with 10 observations
  5. Actionable: If something needs to change, say what and how
  6. Check memory: Have they shown this pattern before? Reference it.

Red Flags

  • HR significantly higher than usual at same pace
  • Pace dropping on easy runs (fatigue accumulation)
  • Inability to hit interval targets they could hit 2 weeks ago
  • Increasing RPE for same objective effort
  • Missing workouts or cutting them short