Research: “Hitting the metrics, missing the angles: closing the directional gap in run-based compensatory training”
Author: Sagarra et al., 2026
Journal: Sport Performance & Science Reports

In modern elite football, non-starting or low-minute players require post-match compensatory training to maintain match readiness without causing undue fatigue before the next fixture. When ball-based games are unavailable due to travel, small squad sizes, or lack of pitch space, performance staff typically rely on run-based drills (e.g., Box-to-Box runs, Shuttle runs, Max Sprints).

While traditional GPS dashboards suggest these linear running drills “hit the targets” for high-speed running (HSR) distance, accelerations, decelerations, and peak speed, advanced tracking data (GPS 3.0) reveals a major flaw: they completely miss the multi-angle and multidirectional demands of match play. Linear drills concentrate almost exclusively on anterior and posterior planes (0° and 180°), leaving diagonal (45°), lateral (90°), and backward-diagonal (135°) movements completely untrained.

To bridge this gap, the authors introduce a novel, pitch-efficient drill called “What The Compensation” (WTC). Combined with standard linear drills, WTC forms a comprehensive, 25–30 minute post-match compensatory session that covers both high-speed volume and multidirectional mechanical loading.

The Problem: “Hitting Metrics, Missing Angles”

Traditional GPS metrics (GPS 2.0) focus on how much distance is covered and how fast players run, but ignore the trajectory and direction of the movements.

The Blind Spot of Standard Drills

• Match Demands: Actual match play generates an omnidirectional movement signature. Players make frequent cuts, arcs, and turns across all angular sectors (45°, 90°, 135°, and 180°) on both left and right sides.
• Linear Toolkit Deficiency: Standard drills—such as Box-to-Box (BtB), Halfway BtB, Shuttle 4x16m, Max Sprints, and BtB S-Runs—are predominantly linear.
• The Directional Gap: Linear options leave the 45° forward-diagonal, 90° lateral arc, and 135° backward-diagonal sectors almost entirely empty. As a result, non-starters miss out on critical multidirectional mechanical stimuli necessary for injury prevention and movement readiness.

The Solution: “What The Compensation” (WTC)

The WTC drill was specifically designed to target the missing angular sectors while requiring no setup, minimal space, and no ball.

Execution & Setup

• Location: Performed entirely inside the pitch centre circle (radius: 9.15 m) using 4–6 cones.
• Structure: A standard 4-minute block consists of 8 repetitions using a 3-3-2 mix with 15 seconds} of rest between reps:
  • 3x W-shape: Double-diagonal path across the circle with sharp cuts back across. Targets backward-diagonal loading bilaterally.
  • 3x T-shape: Sprint to the centre, 90° turn, lateral sprint to one side, then across (180°) to the other. Targets lateral movements—the single pattern missing from all linear drills.
  • 2x C-shape (Curved Accel/Decel): Curved run along the perimeter of the circle and back. Targets curved acceleration/deceleration and centripetal mechanics.

Individualizing Intensity

Because WTC is dominated by accelerations and decelerations, target work times per shape are adjusted according to each player’s individual acceleration/deceleration capacity band:

Capacity Band	Max Acc (m⋅s−2)	Max Dec (m⋅s−2)	Combined Index	W-Shape (s)	T-Shape (s)	C-Shape (s)
High	>5.7	>6.8	>6.2	10	8	8
Medium	5.3 – 5.7	6.4 – 6.8	5.9 – 6.2	11	9	9
Low	<5.3	<6.4	<5.9	12	10	10

This ensures all players train at a comparable relative intensity (~85–90% of individual max).

Analysis: The Three Layers of Load Assessment

The study evaluated all drills through a three-layer perspective:

1. Movement Signatures: WTC is the only run-based exercise that lights up all four angular sectors, closely mirroring the movement signature of a real match.
2. Mechanical Work Breakdown (MW_thigh vs. MW_stride):
   • MW_stride measures linear running against gravity.
   • MW_thigh measures mechanical load from changes of motion (accels, decels, turns).
   • A full match averages 41% MW_thigh. Traditional drills average only 15–26% MW_thigh. WTC provides 69% MW_thigh, effectively rebalancing the session’s mechanical profile.
3. Intensity Exposure Time (IET): WTC allows players to sustain high mechanical intensity (≥ 70% of match 1-minute Most Intense Period for MW_thigh) densely within a short, 4-minute window.

Practical Session Template (~25–30 Minutes)

Golden Rule: Ball-based small-sided games (SSGs) remain the first choice whenever operationally possible. When SSGs are impossible, use the run-based template below.

By pairing WTC with select linear drills, performance staff can drop redundant exercises (Halfway BtB, Shuttle 4x16m, and S-Runs) and build a streamlined 3-part session:

Cumulative Session Load vs. Match Demands

When these three components are combined, the session achieves:

• High-Speed Running (HSR): 115 – 200% of match day values (~1,129m).
• Accelerations & Decelerations: 123 – 169% of match day counts.
• Directional Load (MW_thigh): ~19 – 30% of total match volume, but provides ~48% (~3 minutes) of match-equivalent high-intensity exposure time (≥70% match MIP). Without WTC, directional load drops to less than 3% of match demands.

Key Limitations & Considerations

1. Cardiovascular Blind Spot: This study evaluated external mechanical load only. It did not measure heart rate response. Non-starters frequently miss cardiovascular targets (>90% HR_max time). Coaches must track heart rate concurrently to ensure aerobic conditioning targets are met alongside mechanical goals.
2. Dose-Response Linearity: Mechanical output per block may decline slightly across consecutive WTC blocks due to fatigue; target work times should be managed flexibly.
3. Sample Size: Movement profiles were established using professional-level sample cohorts (N=10 and single-player MIPs); values serve as practical guidance rather than strict rigid norms.

Conclusion & Scientist’s Takeaway

“Traditional dashboards show you how far and how fast your players ran, but not in what direction. Linear drills hit your high-speed metrics while leaving your players movement-starved in lateral and diagonal planes.”

Action Plan for Coaching Staff:

1. Stop relying solely on Box-to-Box and Shuttle runs for non-starters.
2. Prioritize SSGs/ball work whenever circumstances allow.
3. If running drills are mandatory, integrate 3 blocks of WTC inside the centre circle, paired with Box-to-Box runs for volume and Max Sprints for top-speed hamstring protection.
4. Monitor heart rate live during WTC blocks to confirm cardiovascular targets are being satisfied simultaneously.

This summary was generated with the assistance of Gemini based on the original article, with the aim of translating the research into insights for coaches and support staff.