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Power and Speed: The Metrics That Actually Drive Athletic Performance
After nearly four decades working at the highest levels of track and field and professional sport, one misunderstanding stands out as the most damaging and pervasive in high-performance coaching: the conflation of strength and power. These are not the same quality. They do not respond to the same training. And if you confuse them in prescription, you will systematically fail to develop the athletic attribute that determines performance in virtually every dynamic sport.

Rolf Ohman
Jul 3


Putting Change into Delivering COD Coaching Sessions
Coaching change of direction is not primarily a biomechanics problem. It is a human problem. Before any technical model can be successfully delivered, a practitioner must first establish the conditions under which an athlete will actually want to change, engage, and take ownership of the process.

Gareth Walton
Jun 30


Not All Load Is Equal: A Joint Mechanical Perspective on Rugby Performance
Understanding the dominant mechanical stresses experienced by rugby players can help practitioners make more informed decisions when planning strength training.
By considering not only how much work athletes perform, but also the type of stress they repeatedly encounter, practitioners may be better positioned to develop targeted and context-specific strength training interventions.

Francesco Sarno
Jun 16


Speed Training: A Systems Approach to Developing Speed in Athletes
Speed is one of the most coveted qualities in sport. It is pursued obsessively, dissected in slow motion, and marketed through countless training systems that promise to unlock it.
Yet for all the attention it receives, speed training remains one of the most misunderstood domains in strength and conditioning.

Antonio Robustelli
Jun 9


Integrating Isometrics Intelligently Within a Sprint Program
The debate around isometrics in sprint training often swings between two extremes: either they are held up as highly specific tools that replicate sprint mechanics, or they are dismissed as irrelevant because sprinting is a dynamic, high-velocity, elastic activity.
As usual, the truth sits somewhere in the middle. Isometrics are not sprint-specific in the strict biomechanical sense, but they can play a meaningful role in a well-designed program.

Antonio Robustelli
Jun 2


PlateMate Force Plates: Practical Force Measurement for Coaches, Physios, and Performance Staff
Force plates have become one of the most valuable tools in modern performance environments. What used to be confined to biomechanics labs is now part of daily monitoring in gyms, clinics, and training centres. Coaches and clinicians increasingly rely on objective force‑time data to complement their own judgement—whether they’re tracking neuromuscular readiness, managing return‑to‑play progressions, or simply trying to understand how an athlete produces force and absorbs energ

Mathies Olsen
May 26


Exercise Specificity: Why Function and Demands Matter More Than Positions
In recent years, the conversation around exercise specificity has drifted toward a narrow and often superficial interpretation: if an exercise looks like the sport, then it must be specific. This trend has become particularly visible in sprint training, where isometric holds in “sprint‑like” positions are frequently promoted as highly specific tools for both training and testing.

Antonio Robustelli
May 23


3 Types of Strength Training Sessions Structure in Football
In the elite environment, strength training isn’t an optional add‑on; it’s a non‑negotiable pillar of performance. Treating the weight room as secondary to the pitch reflects a deep misunderstanding of modern sports science. This isn’t about random lifting sessions — it’s about building a system where every rep has a purpose and contributes to what happens on match day.

Marko Matusinskij
May 8


Trunk Training Framework: Strength, Stiffness Modulation, and Lumbopelvic Control
Human movement is a complex, adaptive system. Every action—whether a maximal sprint, a change of direction, or a technical skill—emerges from the interaction of multiple subsystems: musculoskeletal, neural, perceptual, and environmental. Within this landscape, the trunk plays a central integrative role. It is not simply a structure that stabilizes or resists motion; it is a dynamic hub that modulates force, coordinates segments, and adapts to changing constraints.

Antonio Robustelli
May 1


Core Stability: Why the Concept Persisted, Why It Misleads, and What Modern Trunk Training Should Actually Look Like
For more than two decades, core stability has been one of the most widely used concepts in sport science and rehabilitation. It appears in clinical assessments, warm‑ups, physiotherapy prescriptions, and performance programs. It is invoked to explain pain, prevent injury, and enhance athletic performance. Yet the more closely we look at the origins of the idea, the less coherent it becomes.

Antonio Robustelli
Apr 28


Treatment and Prevention of Turf Toe
Turf toe is far more complex than a simple hyperextension injury. While contact mechanisms remain relevant, a substantial proportion of cases arise from modifiable biomechanical factors such as excessive pronation, functional hallux limitus, restricted FHL glide, and insufficient intrinsic foot strength. Effective prevention and rehabilitation require a comprehensive approach that addresses these underlying mechanisms rather than merely treating symptoms.

Tom Michaud
Apr 14


Sprinting as a Coupled Locomotor System
Biomechanical evidence strongly supports the view that sprinting is not a series of single‑leg hops. It is a coupled, history‑dependent locomotor system in which stance, flight, and swing phases are highly interconnected. Reducing sprinting to unilateral hopping may simplify coaching narratives, but it obscures the mechanisms that actually govern performance.

Antonio Robustelli
Apr 8


Isometric Training as a Tool for Dynamic Performance
Given the intense repetitive stress of competition, the wear and tear of chronic pathologies, and the increasing physical demands on young athletes, isometrics in all forms are essential for both development and durability. Far from being "static" in progress, isometric work is a powerful driver for transferring strength into sport-specific dynamic movements.

Manuel Lacroix
Apr 2


(Un)Movement Screenings: Why Tests Like the FMS Fail to Capture How Athletes Actually Move
Static, constrained movement screening tests like the FMS are built on outdated assumptions about motor control and movement quality. By ignoring variability, degeneracy, and the role of constraints, they fail to capture the essence of athletic movement. Worse, they risk misleading practitioners into overvaluing appearance over function.

Antonio Robustelli
Mar 28


From Force to Speed: Why Performance Professionals Need Both Force Plates and Timing Gates
If you are serious about integrating force plates and timing gates into one coherent workflow, Strength By Numbers provides a connected solution through the AxIT performance platform.

Andrew Lemon
Mar 3


Hamstring “Tantrums”: Effective Exercise or Social Media Noise?
In recent years, hamstring tantrums (also referred to as Swiss‑ball kicks or flutter kicks) have gained popularity, largely supported by EMG studies reporting high levels of hamstring activation during the exercise, and viral trending videos on social media. However, what's important to understand is that muscle activation alone is a poor criterion for judging the usefulness of an exercise.

Antonio Robustelli
Feb 24


A Rationale for Progressing Whole-Body Isometric Training Through Isometric Strength Endurance Using PIMA
Isometric training is often discussed as a single method, but this framing obscures the critical distinctions between how isometric force is produced and why those distinctions matter for performance, durability, and health. This article outlines the rationale for progressing isometric training through Isometric Strength Endurance using Pushing Isometric Muscle Actions (PIMA) at longer contraction durations (45 seconds) and maximum descending intensity across the whole body.

Brad Thorpe
Feb 16


Arch Height and Injury: Is There Really No Connection?
Foot strengthening exercises are inexpensive, easy to perform, and result in significantly better outcomes.

Tom Michaud
Feb 12


Why Coaches Use Dashr Timing System: a Complete Ecosystem That Makes a Coach's Job Easier and Athletes Better
Dashr gives you the ability to test speed, agility, power, reaction, and more—quickly and accurately—without complicated setups or recurring subscription fees. You can capture results instantly on your phone, give athletes immediate feedback, and still have everything synced for long-term tracking and reporting when you want it.

Chase Pfeifer
Feb 9


Hamstrings Behaviour and Movement Expression: the Great Debate
Current evidence suggests that the hamstrings function primarily as an eccentric energy-absorbing brake during the late-swing phase, necessary to decelerate the lower limb and manage loads that exceed isometric capacity. However, the presence of long tendons and specific architectures in muscles like the BFlh ensures that tendon contributions and spring-like behavior are also vital.
The issue of hamstring behavior remains complex and multifactorial.

Antonio Robustelli
Feb 3
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