· KI-generiertes Rendering — keine echte Aufnahme· AI-generated render — not real footage
Frequently asked questions
BallScience4U is the performance lab of the AUGMANITAI research programme — documented movement research and biomechanics in tennis, padel, pickleball and golf.
Why this concerns you: read the short, honest answers below before you write to us.
Translation: “Whoever understands how they think, understands how they play.”
Sports
Tennis · Padel · Pickleball · Golf
hover to seeContact
Contact by email or form.
Enquiries are answered personally — no pricing given by form.
hover to seeCan my child train here? Can I book lessons?
No — nothing is offered or bookable on this site. Andreas Ehstand coaches tennis officially only at TC Herrsching. This site is a documentation of research into movement and performance, not a service. If you are looking for tennis lessons, please contact TC Herrsching directly.
Which sports have documented cases?
Tennis, padel, pickleball and golf. Focus: performance factor analysis and mental performance factors in sport (from the GPTCA/ISMCA coach training).
What is BallScience4U — and what is it not?
BallScience4U is a research and documentation site: it records measured movement, ball flight and documented training histories. It is not a bookable training offer — nothing here is for sale. If you are unsure whether the documented work relates to your question, write two sentences — you will receive an honest answer, including an honest no.
What is Phöni? (computational analysis of movement data)
Phöni is the AI assistance used in my own coaching work (third-party tools). It supports the training process through motion analysis, documentation of load and recovery, training diary and competition preparation. Phöni is a tool, not a substitute for human coaching. One historical example from practice, achieved with the method alone, well before Phöni existed: one player I worked with individually is documented as making a clear jump in the rankings within one phase of a season — a single documented case. More details on the term system behind it, License of Clarity — Andreas Ehstand's own vocabulary-brain for human-AI interaction:
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.
Phöni ist die in meiner eigenen Trainingsarbeit genutzte KI-Assistenz (Werkzeuge Dritter). Sie unterstützt im Trainingsprozess durch Bewegungsanalyse, Dokumentation von Belastung und Erholung, Trainings-Tagebuch und Wettkampfvorbereitung. Phöni ist Werkzeug, kein Ersatz für menschliches Coaching. Ein historisches Beispiel aus der Praxis, das allein mit der Methode erreicht wurde, lange bevor es Phöni gab: eine von mir betreute Spielerin ist nachweislich innerhalb einer Saison-Phase deutlich in der Rangliste aufgestiegen — ein dokumentierter Einzelfall. Mehr Details zum Begriffs-System dahinter, License of Clarity — Andreas Ehstands eigenes Begriffs-Gehirn für Mensch-KI-Interaktion:
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.
Behind it is a method: real training moments are observed, named and distilled into one clear term — Phöni is the tool that makes these terms usable in training, not a replacement for them. More on the method: Performance Lab.
Dahinter steckt eine Methode: reale Trainingsmomente werden beobachtet, benannt und zu einem klaren Begriff gefasst — Phöni ist das Werkzeug, das diese Begriffe im Training nutzbar macht, nicht ihr Ersatz. Mehr zur Methode: Leistungslabor.
How can I reach you for an exchange?
This site documents research and individual cases. For a professional exchange, reach me by email — this is not a bookable service and there is no price list.
What does the official research seal (BSFZ) mean?
In 2026, Germany’s federal certification body for research certified one single project from this work as genuine research and development.
Will my data be stored?
This website sets no cookies and loads no third-party embeds; all videos are hosted locally. The only thing stored is your language choice in the browser (localStorage). Details: Privacy policy
Diese Website setzt keine Cookies und lädt keine Dritt-Einbettungen; alle Videos liegen lokal. Gespeichert wird nur Ihre Sprachwahl im Browser (localStorage). Details: Datenschutzerklärung
Are health or psychotherapeutic services offered?
No. BallScience4U documents sports movement research and mental performance factors in a sporting context. For health, psychotherapeutic or medical questions please contact the appropriate qualified professionals.
Are financial, legal or career advisory services offered outside of sports?
No. BallScience4U is limited to sport movement research, documentation and sport-related topics. Advice in other areas of life is outside the scope of services.
Where can Andreas Ehstand be reached?
Phone: +49 151 29108224
Email: andreas.ehstand@augmanitai.com
Address: Nepomukweg 7, 82319 Starnberg
Which brands are protected?
License of Clarity®, BallScience4U and Phöni are designations with claimed trademark or business name protection. Details and licensing information: Rights & Protection
License of Clarity®, BallScience4U und Phöni sind Bezeichnungen mit beanspruchtem Marken- bzw. Geschäftsbezeichnungsschutz. Details und Lizenzierungs-Informationen: Schutz & Rechte
This protection is not a formality — it is part of the value: all terms and the entire work are additionally licensed under CC BY-NC-ND 4.0 — free to read and cite, but not to commercially copy. That is what sets the method apart from an ordinary training tip.
Can I talk to you?
Write two sentences about your situation and you will receive an honest, personal assessment — a non-commercial exchange about the documented work, not a bookable service.
How can I get in touch?
This is a research and documentation site. For a professional exchange, questions about Phöni or cooperation, please use the e-mail or write directly to andreas.ehstand@augmanitai.com.
Dies ist eine Forschungs- und Dokumentations-Seite. Für fachlichen Austausch, Fragen zu Phöni oder Kooperationen nutzen Sie bitte die E-Mail oder schreiben Sie direkt an andreas.ehstand@augmanitai.com.
Full legal texts (imprint, privacy policy, rights & protection, §1–§18 disclaimer) are published in the legal section on the homepage, linked in the footer.
