When U.S. sports physician Mary T. H. Bell co-developed early injury prevention programs in youth sports in the 1970s, the focus was not on strength but on preparation: how to wisely bring the body into performance mode. This perspective—warm-up as an active interface between everyday life and explosive performance—shapes modern training science today. It shows that proper warming up is not a ritual but a lever for speed, precision, and longevity in sports practice.

A warm-up is more than just "loosening up a bit." It activates multiple systems simultaneously: the cardiovascular system for better circulation, the nervous system for faster signal transmission, and the joint and muscle structures for more efficient power transfer. Dynamic stretching dynamic stretchingactive, momentum-controlled movements over the joint range of motion, without prolonged holding promotes circulation and coordination before exertion. Neuromuscular activation neuromuscular efficiencyhow precisely nerve impulses activate muscles on time and with the appropriate force improves timing, stability, and changes in direction. Sport-specific warming up specificityexercises that mimic the movement patterns, speeds, and perceptual demands of the upcoming session combines these components into measurable performance—ranging from sprints to decision-making under pressure.

A smart warm-up reduces injury risks and enhances acute performance. Dynamic warm-ups are preferred over purely static stretching because they strategically ramp up muscular, neuronal, cardiovascular, and psychological systems before exertion—with positive effects on sprint and jump performance, as well as potentially lower injury rates in sports programs that integrate neuromuscular elements ^{[1] [2]}. Moreover, neuromuscular warm-ups enhance the ability to change direction quickly and increase knee-related isokinetic strength—two metrics linked to performance and injury prevention in multidirectional sports ^[3]. Proprioceptive neuromuscular facilitation can acutely boost balance, strength, and endurance of the lower extremity—crucial for stability and load tolerance in training ^[4]. In short, those who systematically "ramp up" their bodies before a session gain speed, control, and robustness—today and in the long term.

Recent studies are focusing on cognitive and neuromuscular components of the warm-up. In a study with young footballers, a motor-cognitive warm-up with auditory or visual stimuli improved executive performance (Stroop errors) as well as football-specific passing and dribbling tests immediately after the session compared to a purely motor protocol; depending on the task, either verbal or visual instructions performed best ^[5]. The relevance is clear: those who address perception and decision-making speed in the warm-up enter complex game situations more focused and precisely. Similarly, a study with youth basketball players showed that a modern cognitive-motor warm-up with open-skill demands improved sprint and reaction performance directly after warming up more than a traditional, closed protocol—especially in reaction-based sprints ^[6]. Data on proprioceptive neuromuscular facilitation in footballers report acute gains in isokinetic strength, endurance, and balance compared to general warm-ups, supporting the preparation of the lower extremity before dynamic sports ^[4]. Additionally, a meta-analysis shows that structured neuromuscular warm-ups (with components such as resistance, stability, core, plyometrics, agility) can moderately to significantly enhance change of direction performance and knee-related isokinetic strength—the effect is moderated by protocol details like the number of sets and frequency ^[3]. Together, this supports the idea that warm-ups that combine sensory, cognitive, and neuromuscular stimuli yield measurable acute effects on speed, control, and decision quality.

- Focus on dynamic stretches: 6–8 minutes of active, progressively larger ranges of motion (e.g., lunges with rotation, leg swings, arm circles). The aim: to raise temperature and muscle circulation without a drop in tension. This improves sprint and jump readiness and supports injury prevention ^{[1] [2]}.
- Tailor the warm-up to the sport: mimic the movement patterns, speeds, and perceptual demands of the upcoming session (e.g., dribble-related changes of direction in football, reaction-based starts in basketball). Studies show that sport-specific, cognitively enriched warm-ups directly improve decision-making and motor performance ^{[5] [6]}.
- Integrate cognitive stimuli: include visual or auditory signals (color calls, light impulses, coach calls). Use quick reaction tasks during drills. This sharpens executive functions and reaction time—measurable even after one warm-up ^{[5] [6]}.
- Activate the neuromuscular system: 8–10 minutes with elements from stability (single-leg stands with perturbations), core (anti-rotation), light resistance (mini-bands), plyometrics (skippings, hops), and agility (cutdowns, shuffles). Meta-analyses report improvements in change of direction and knee-related strength, especially when sets and frequency are appropriately dosed ^{[3] [7]}.
- Use PNF activation before lower-body workouts: short proprioceptive neuromuscular facilitation sequences (e.g., contract-relax in functional angles) followed by active transitions. This acutely enhances balance, isokinetic strength, and endurance of the lower extremity ^[4].
- Structure proposal (12–15 minutes): 3–4 minutes of light locomotion; 4–6 minutes of dynamic stretching and sport-specific drills; 4–6 minutes of neuromuscular activation including 2–3 short reaction tasks. Aim: warm, alert, and reactive—without pre-fatigue ^{[1] [5] [6] [3]}.

Future research steps will tailor warm-ups even more precisely to task, athlete level, and daily condition—incorporating smart sensors that capture reaction quality and neuromuscular activation in real time. Adaptive protocols that dynamically mix cognitive stimuli, PNF elements, and load control depending on the sport and individual are expected to maximize acute performance and injury prevention simultaneously.