KI · AI
· KI-generiertes Rendering — keine echte Aufnahme· AI-generated render — not real footage
Biomechanics and computational analysis of movement data.
At BallScience4U we work at the intersections between tennis, padel, pickleball and golf. Each discipline has its own techniques, but they share biomechanical foundations.
We combine sport-science methods with experienced coaching practice and computational analysis of movement data.
Phöni ist ein internes Arbeitswerkzeug der Trainingspraxis. Über diese Website ist Phöni nicht nutzbar — hier findet kein Austausch mit einer Künstlichen Intelligenz statt.Phöni is an internal working tool of the coaching practice. It is not available through this website — there is no interaction with an artificial intelligence here.
This page documents sport and movement research — it is documentation, not a service. It is not medical, therapeutic or psychological advice: no diagnoses are made, no treatments recommended, nothing promised. For health questions, please consult qualified professionals.Diese Seite dokumentiert Sport- und Bewegungsforschung — sie ist Dokumentation, keine Dienstleistung. Sie ist keine medizinische, therapeutische oder psychologische Beratung: es werden keine Diagnosen gestellt, keine Behandlungen empfohlen, nichts versprochen. Bei gesundheitlichen Fragen wenden Sie sich bitte an qualifizierte Fachpersonen. Disclaimer
Trajectory physics, made visible · AI-generated illustration. Flugbahn-Physik, sichtbar gemacht · KI-erzeugte Illustration.
KI · AI
· KI-Bild· AI image
Performance factor analysis, biomechanics, AI.
Focus of the work
Performance factor analysis — the systematic breakdown of complex performance into nameable, measurable components. Documented in individual and group settings, in association and club work, and in long-term performance development.
Hover for the flightResearch and experience areas
- Mental performance factors in sport (from the GPTCA/ISMCA coach training)
- Performance factor analysis for tennis, padel, pickleball and golf
- Documented training progressions (individual and group)
- Experience in association, university and club sport
- Long-term performance development
- Digital diaries with AI feedback (Phöni)
- Performance planning in the sporting context
The explorer below carries over the original biomechanics deep-dive from the BallScience4U performance lab unchanged in substance — nothing is invented, only translated for you to read here. Tap a factor card to read the full text.
Systematic training meets high performance.
One coach, four sports, one measurable standard: performance factor analysis for tennis, padel, pickleball and golf.
Hover for the courtSee what it looks like when it works → the documented result.
Sehen Sie, wie es aussieht, wenn es wirkt → der dokumentierte Erfolg.
Hover for the flightExplore the performance factors
Click a card to open the full factor text. Press Escape or click again to close.
The science behind racket sports
More from the archive
Welcome to racket sports — tennis, padel, pickleball and golf, held together by the same movement principles.
Resources on this page — background to read for players and anyone curious how movement works.
What biomechanics makes visible — how the mechanics of the body shape technique and performance.
Where this work is heading — careful documentation of what helps in training, step by step.
This archive keeps the earlier long texts — moved out of the six cards above to keep them focused.
Body and mind — connected by data
In professional sport, peak performance does not come from ever more training, but from precise control of the interplay of load, recovery and self-observation.
Twenty-five years of international coaching in tennis, padel and pickleball have shown me: the difference between good and great performance lies in making visible what happens between the strokes.
The kinetic chain — try it
Force travels from the ground through the legs and trunk into the arm and racket. Tap a link and watch it travel up to the ball.
An illustration of the idea, not a measurement.
KI · AI
Breathe. The arc holds still — and the movement becomes readable. Durchatmen. Der Bogen hält still — und die Bewegung wird lesbar.
Phöni — the AI assistance used in my own coaching work (third-party tools)
Phöni supports the training process: motion analysis, documentation of load and recovery, competition preparation, training diary. Phöni is a tool, not a replacement for human coaching. All training decisions are made together with your coach.
Phöni is not offered, not provided and not operated through this website; it is not a product of our own. Phöni does not analyse video recordings of people, does not recognise emotions and does not make decisions about people.
Phöni: Technique solid, performance wavers — example dialogue
A case from the lab, documented over several years.
This is what a performance factor analysis looks like when it works: a change measurable on paper, not just felt on court.
In plain terms: from LK2 to around rank 150 nationally, up to a high national competitive level. A documented individual case.
A player I worked with individually
Documented performance proof (tournament player)
This is a documented individual case, not a guarantee: a ranking jump built on performance factor analysis and coaching — the same method Phöni makes structured, traceable and continuously documentable.
Timeline: this player was coached in phases over several years. The ranking jump is one specific episode within that longer coaching relationship, not the entire timeframe.
Eine von mir betreute Spielerin verbesserte sich über mehrere Jahre jeweils sehr auffällig. Sie stieg bis auf ein hohes nationales Wettkampf-Niveau auf, und ihr größter Aufstieg im Sinne der Leistungsentwicklung war von LK2 auf rund Platz 150 der deutschen Rangliste — ein dokumentierter Einzelfall. Ebenso wie bei einem Großteil der anderen auffälligen Spielerentwicklungen war auch hier der Knackpunkt noch vor taktischen Elementen das korrekte Verständnis der Kraftverhältnisse im Treffpunkt. Sie wurde über mehrere Jahre teils durchgängig begleitet, und Teile ihrer Entwicklung wurden auch bei Fachvorträgen dokumentiert. Ihre Spielerentwicklung hat durch die schnelle, anhand des Rankings messbare Steigerung sehr große Aufmerksamkeit erzielt.Account in the original German.
For context: what is meant here by force conditions at the point of impact is, concretely, the interplay of racket-face angle, contact point and the timing of the kinetic chain at the moment the ball is struck.
Voices on the method
All quotes are on file in written original form. Names are shown only where the person has expressly agreed.
We were all delighted by his straightforward, clear way of communicating. On top of that, his immense theoretical knowledge as a sports scientist impressed us — all the more because he translated that theoretical knowledge perfectly into practical exercises for us.
Mein Sohn hatte 2022 die Möglichkeit, bei Andy zu trainieren, und wir sind wirklich zufrieden mit den Fortschritten, die er gemacht hat. Besonders die Arbeit an den Treffpunktgrundlagen und den Kraftverhältnissen zum Tennisball hin im Treffpunkt hat ihm sehr geholfen. Diese Techniken und das grundlegende biomechanische Verständnis haben sein Spiel spürbar verbessert. Das Training in Andalusien und später in Hochkönig war eine wertvolle Erfahrung, ebenso wie die weiteren Trainingstermine im Nachhinein. Mittlerweile spielt er erfolgreich bei Jugendturnieren und im Verbandsspiel. Andy hat mit viel Geduld und Engagement gearbeitet, was ihn wirklich motiviert hat, sich weiterzuentwickeln.Original quote in German.
BallScience4U is the performance lab of the AUGMANITAI research programme — where research on human-AI interaction meets the court.
augmanitai.com Hover for the court
