Strength isn’t just about muscle size. It’s about the nervous system’s ability to issue an efficient motor command, the muscle’s molecular capacity to generate tension, tissue repair after stress, and how a training programme is structured across time. This series walks the science of strength training in seven parts — from foundations to applied profiles.
New to strength science? Start with Part 1: Fast-Twitch vs Slow-Twitch. For periodization first, jump to Part 3: Periodization for Endurance Athletes.
Series Roadmap — 7 Parts
Logical progression: muscle physiology → neuromuscular function → periodization → applied scenarios in tennis, football, basketball. Each part builds on the last.
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1.
Fast-Twitch vs Slow-Twitch — Which Muscle Fibres Do Footballers Need?
5 min read -
2.
Muscle Cramps in Football — Causes and Prevention
5 min read -
3.
Periodization for Endurance Athletes: How to Structure a Training Year
7 min read -
4.
Why Tennis Players Need Strength Training: An Evidence-Based Case
8 min read -
5.
Virgil van Dijk and the Power-to-Weight Profile of an Elite Aerial Defender
6 min read -
6.
Nigel Hayes-Davis and the EuroLeague Physical-Wing Strength-Defense Profile
6 min read -
7.
Erling Haaland and the Force–Velocity Profile of an Elite Striker
6 min read
Why a Series?
Standalone articles deliver information; a series delivers context. To understand why a movement works, you need to know how a muscle contracts, which fibres are recruited, and what cellular signals are triggered. These four foundational pieces plus three elite-athlete profiles form a learning path from molecular hypertrophy mechanisms to applied force-velocity profiling in professional sport.
About the Author
Frequently Asked Questions
How long until I see results from strength training?
The first 4–6 weeks are dominated by neural adaptation: you learn to recruit existing fibres more efficiently. Visible hypertrophy follows from week 8–12. Meaningful maximal-strength gains require 16–24 weeks of structured periodization. Don’t be impatient — the ‘feeling stronger before looking bigger’ window is real and expected.
What set-and-rep range is optimal for hypertrophy?
Mechanical tension, metabolic stress, and muscle damage are the three established mechanisms. Most evidence supports 6–12 reps at 65–80% of 1RM with 8–20 seconds time under tension per set. The weekly volume per muscle group (10–20 sets) matters more than the per-session rep number.
Can I train for strength and endurance in the same block?
Yes, but plan around the ‘concurrent training interference effect.’ High-volume aerobic work activates AMPK, which transiently antagonizes the mTOR–p70S6K pathway that drives hypertrophy. The practical fix is to separate strength and endurance sessions by at least 6–8 hours or alternate days.
What is progressive overload and why does it matter?
Apply the same stimulus repeatedly and adaptation stalls. Progressive overload means systematically increasing one variable per week — load, reps, sets, complexity, tempo, or session density. Conservative increments of 2–5% per week are sustainable for 8–12 weeks before a deload.
Do master athletes (40+) still benefit from strength training?
More than anyone. After the third decade, 3–8% muscle mass per decade is lost to sarcopenia. Regular resistance training doesn’t fully reverse this but slows it by 50–80%. Studies on individuals in their seventies show 50%+ strength gains from 12-week interventions.
Is strength training different for female athletes?
Absolute loads differ, but the physiological mechanisms (hypertrophy, neural drive, hormonal response) are largely the same. Oestrogen aids muscle repair, so recovery tends to be faster. The most-cited practical adjustment is to concentrate high-intensity strength sessions in the follicular phase (days 1–14) of the menstrual cycle.
A separate 7-part series on aerobic physiology, VO₂max, heart rate zones, and polarized training: Endurance Science Series →