This article was first published in Rouleur Issue 139

Cycling culture celebrates endurance above all else. Kilometres logged, hours in the saddle, and FTP numbers dominate training discussions. But physiology reveals a critical gap: your muscles are capable of far more than repetitive pedalling patterns. If you want to ride faster, climb stronger, and maintain performance as you age, you need to think beyond the bike.

Muscle performance operates on two fundamental levels: Muscle mass – the total number of contractile fibres available. Neuromuscular activation – your ability to recruit those fibres on demand.

To understand why this matters for cyclists, you need to know how your muscles actually work. Every movement begins with your brain sending electrical signals through motor neurons to activate muscle fibres. A motor unit consists of one motor neuron and all the fibres it controls. Your body has two main types:

Low-threshold motor units activate easily and control slow-twitch fibres. These excel at sustained efforts and form the backbone of endurance performance.

High-threshold motor units require greater neural drive to activate and control fast-twitch fibres that generate peak power for sprints, climbs, and surges.

Here is the critical insight: endurance cycling predominantly recruits low-threshold units, leaving your fast-twitch capacity underdeveloped. You literally have dormant muscle potential sitting unused. Strength training forces high-threshold unit activation, teaching your nervous system to recruit all available fibres, not just the ones cycling typically uses.

This translates directly to performance. When you need to surge up a climb, bridge a gap, or respond to an attack, it is neuromuscular activation that determines whether you can access your full power reserve or remain limited by undertrained pathways. You cannot use what you cannot recruit. On gravel and adventure rides these dormant fibres become even more relevant. Technical climbs, sudden accelerations, and stabilising the bike on uneven ground all demand fast-twitch recruitment. Without strength work you are leaving watts untapped and stability compromised where you need them most.

The misconception that strength and flexibility oppose each other undermines optimal training. In reality, they form an integrated system for musculoskeletal health. Cycling’s repetitive motion pattern builds remarkable efficiency within a narrow range. However, this specificity creates vulnerabilities: shortened hip flexors, limited thoracic rotation, and reduced ankle mobility. These restrictions do not just affect off-bike movement; they compromise pedalling mechanics and power transfer.

Active mobility work maintains healthy tissue length and joint function. Strength training through full ranges reinforces this mobility under load, creating stable, functional movement patterns. Together they preserve the movement quality that cycling alone cannot maintain.

Beginning around age 30, adults lose three to eight per cent of muscle mass per decade through a process called sarcopenia. This rate accelerates significantly after 60, with some individuals losing up to 15 per cent per decade in later years. The muscle mass decline follows a predictable pattern: gradual loss through middle age, then a steeper decline beyond 60.

The consequences extend far beyond cycling performance. Sarcopenia affects metabolic health, bone density, balance, posture, and injury resilience. For cyclists, this means not just reduced power output, but compromised bike handling, increased crash risk, and longer recovery times from training stress. For women, particularly post-menopause, resistance training is also one of the most effective tools for preserving bone density, another crucial factor in long-term health and crash resilience.

Endurance training alone cannot prevent sarcopenia. Research consistently demonstrates that progressive resistance training is the most effective intervention for preserving both muscle mass and the neural pathways that control it. Regular strength training can flatten the typical decline curve, maintaining muscle tissue and function that would otherwise be lost.

This is not just about performance in your 60s and beyond. The strength foundation you build in your 30s, 40s, and 50s determines your physical capacity for decades to come. Every year of sarcopenia prevention compounds creates a significant advantage in later life.

Technique priority: Master movement patterns before adding load. Quality execution builds the neural pathways that make strength training effective and safe.

Strength focus: Target two to six repetitions at 80 to 95 per cent of maximum effort. This rep range optimally trains neuromuscular activation and strength gains rather than muscular endurance.

Training frequency: Optimal is two sessions per week, 45 to 60 minutes each. Minimum effective dose is two sessions per week, 30 minutes each. The maintenance level is one session per week.

Practical integration: Schedule sessions during existing routines. Treat strength work as non-negotiable training time, not an optional add-on. If you are already training indoors on a trainer, stack strength or mobility sessions straight after your ride. A 20-minute block is better than nothing, and the pairing makes consistency easier while offsetting the fixed positions of indoor cycling.

Periodisation: Align strength training with cycling goals. Build foundational strength during winter months and base periods, maintain at least one session during peak training, and emphasise mobility during recovery phases.

Cyclists obsess over data and marginal gains, yet often ignore one of the most significant performance opportunities. Your untrained muscle fibres, restricted ranges of motion, and underdeveloped strength represent measurable performance potential that no amount of endurance volume can unlock.

The maths is simple: more recruited muscle fibres equals more available power. Better mobility equals more efficient movement and reduced injury risk. Preserved muscle mass equals sustained performance as you age. Think of strength training as both performance gain and injury insurance: fewer missed weeks from overuse injuries, crashes, or back pain, and more consistent time on the bike.

It is no coincidence WorldTour teams now programme gym sessions as standard. Strength is no longer a supplement; it is a cornerstone of modern performance.

Endurance keeps you riding long. Strength and mobility keep you riding well.