Eccentryx / Exercise Atlas / recovery
A-skip
Alternate high knee with skip; stay tall; arm swing opposes the leg drive.
Muscles
- Primary
- hip flexors
- Supporting
- calves, coordination
Mechanics
- Pattern
- joint circles
- Equipment
- bodyweight
- Geometry
- Variable Range
- Energy model
- Aerobic Stability (>90s)
- Target feel
- Hip flexor + calf coordination — imprints the sprint acceleration pattern.
- Progression
- Add B-skip (leg cycling extension); progress to full sprint mechanics series.
- Regression
- High-knee march in place before adding skip.
Watch for
- Leaning back — kills forward drive; stay tall with slight lean
- Passive arm swing — active arm mirrors leg and drives rhythm
- Foot not dorsiflexed at high point — turns into a sloppy hop
Substitutions
- Sprint repeats
- Jump rope
- High-knee march