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Athletic Training: Running Pace, Maxes & Macros Guide

Calculating target paces, 1-rep maximum lift estimates, and optimal protein intake.

9 free calculatorsFormula includedWorked example

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📚 Overview

Athletic performance improves fastest with structured, measurable progression. Using mathematical pace splits for endurance, percentage-based barbell loads, and macro targets gives you predictable fitness results and minimizes injury risks.

📐 Running Pace & Brzycki 1-Repetition Maximum (1RM)

Pace = Total Time / Distance and 1RM = Weight / (1.0278 - 0.0278 × Reps)

Where reps performed is between 2 and 10 to maintain accurate 1RM estimation.

🔢 Worked Example

Scenario: An athlete bench presses 100 kg for 5 completed repetitions.

Weight: 100 kg
Reps: 5

Denominator = 1.0278 - (0.0278 × 5) = 1.0278 - 0.139 = 0.8888
Estimated 1RM = 100 / 0.8888 = 112.5 kg

The estimated 1-rep max is 112.5 kg (248 lbs). Working sets at 80% should use 90 kg.

💡 Pro Tips

For endurance running, compute pace splits in seconds first before converting back to minutes and seconds.
Active resistance trainers should aim for 1.6 to 2.2 grams of protein per kilogram of body weight daily for muscle protein synthesis.
Warm up thoroughly with progressive sub-maximal weights before attempting high-percentage strength lifts.
Use our Heart Rate Zone calculator to target aerobic base building (Zone 2) vs threshold work (Zone 4).

🧮 Fitness Calculators (9)

Put the formulas above into practice with these free tools:

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