PLANNING · CONCURRENT TRAINING
Concurrent Training Interference Estimator
Estimate strength, hypertrophy, and power attenuation from running while lifting using the Wilson 2012 meta-analysis.
Result
Lifting-Only vs Concurrent Gain
Strength gain attenuation under concurrent endurance load (Wilson 2012).
Recommended split
Current load is within manageable concurrent-training territory.
How to use it
- Open Concurrent Training Interference Estimator and enter your current baseline accurately.
- Adjust one variable at a time so changes are easy to interpret.
- Review the headline output first, then inspect supporting metrics.
- Run at least one conservative and one aggressive scenario.
- Use outputs to set your next training or nutrition action for the week.
- Save or share this setup if you want to revisit it later, then check one easier and one harder version before you change your plan.
Questions people usually ask
What is Concurrent Training Interference Estimator best used for?
Concurrent Training Interference Estimator helps you estimate strength, hypertrophy, and power gain attenuation from running while lifting (wilson 2012). so you can turn estimates into practical next steps.
How do I avoid misleading results?
Use realistic baseline inputs, run multiple scenarios, and update assumptions as your training, recovery, or nutrition changes.
Is this medical advice?
No. Outputs are general planning estimates and do not replace professional medical guidance.
Is this free and private?
Yes. Tools run client-side in your browser with no signup.
Formula
See the math
The underlying formula with variables defined, derivation shown, and a worked example with units.
Related Resources
Learn the decision before you act
Every link here is tied directly to Concurrent Training Interference Estimator. Use the explanation, formula, examples, and benchmarks to pressure-test the calculator output from first principles.
How To Use
4 STEPSHow to Use Concurrent Training Interference Estimator
Step-by-step guide for the Concurrent Training Interference Estimator: inputs, interpretation, and reproducibility tips.
ReadFormula
5 VARIABLESHybrid Training Planner Formula
Hybrid weekly plan: 2-3 strength + 3-4 endurance + 1-2 mobility. Schoenfeld/Roberts 2023 framework. AM cardio + PM strength, ≥6h separation, polarized intensity.
ReadFormula
4 VARIABLESConcurrent Training Interference Formula
Concurrent training interference dose-response: >3 cardio sessions/week reduces hypertrophy ~10-15%. Wilson 2012 + Schumann 2022 meta.
ReadFormula
4 VARIABLESHybrid Athlete Macro Split Formula
Hybrid macro split: protein 2.0-2.2 g/kg, carbs 6-8 g/kg endurance day / 4-5 g/kg lift day, fat 0.8-1.0 g/kg. Roberts 2023. Fuels both strength and endurance demand.
ReadRelated deep dive
All articles →Read further
Long-form context behind the calculator output.
- Pillar·12 min
Concurrent Training Interference: 2026 Meta-Analysis
Concurrent training interference effect: 2026 meta-analysis on strength + endurance — interference magnitude, modality dependence, and programming windows.
Read - Article·7 min
Concurrent Training Interference: 4 Lifts, 30km Running, 1 Rest Day
Concurrent training cost for 4 lift sessions + 30 km moderate running: strength -14%, hypertrophy -18.5%, power -27%. Moderate risk band. The split rule.
Read - Article·7 min
Hybrid Training Plan: 30km Running, 70/20/10 Intensity, Three Lifts
Hybrid training math for 30 km/week running (70% easy, 20% tempo, 10% interval) plus three lifts. Session map, recovery debt, realistic goal window.
Read
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