The Constraints Collective
Our mission is to transform practice environments in sport by equipping coaches with the knowledge, understanding and skills to bridge the gap between skill acquisition theory and practice.
The Constraints Collective
Latest Episodes
#102 Twenty Minutes From the Sea — Chris Button on Why the Pool Doesn't Prepare You for Open Water (Part Two)
In Part Two of this milestone two-part conversation, Ian Renshaw continues talking with Professor Chris Button (University of Otago) — this time about water safety and drowning prevention. New Zealand has one of the worst per-capita drowning ra...
#101 Nobody Plays in Perfect Conditions — Ian & Keith's July Monthly Catch-Up
In this month's catch-up, Ian Renshaw and Keith Davids work through a run of ideas connected by a single question: how do you prepare an athlete for the conditions, schedules, and pressure you can't control? Keith breaks down why the NBA's 82-g...
#100 Use The Funnel, Not the Average Value: Chris Button on the PhD That Almost Wasn’t (Part One)
In this landmark 100th episode, Ian Renshaw and Keith Davids are joined by Professor Chris Button from the University of Otago, whose research has ranged from ball-catching biomechanics to basketball free throws to, more recently, why so many p...
The Video Doesn't Show What Happened — Ian Renshaw & Keith Davids Review Schütz, Betsch & Plessner (2026), with guest Scott Russell
An emergency episode: VAR was dominating the World Cup news cycle, and a paper had just landed asking the exact question everyone was arguing about. Ian Renshaw and Keith Davids review Schütz, Betsch & Plessner's "The Impact of Video Speed ...
#98 From the Pitch to the Algorithm — with Ben Teune
# From the Pitch to the Algorithm — with Ben Teune In this episode, Ian Renshaw and Keith Davids are joined by Ben Teune, Sports Scientist and Analytics Lead at the WTA (Women's Tennis Association), whose PhD work — embedded with the Western Bu...