533: Andrew Iselin on Lachlan Kennedy’s 9.85s 100m and Building World-Class Sprint Speed

In this episode, Andrew Iselin joins me to discuss athlete development, sprint coaching, and the value of exploration over rigid technical models. We get into developing Lachlan Kennedy (9.85s 100m dash and Oceanic Record), coaching asymmetry, relaxation and sprint mechanics, game-based speed work, movement literacy, resisted sprinting, tempo training, and why coaches may need to “shut up” more often and give athletes space to self-organize. Today’s episode is brought to you by Hammer Strength and the Just Fly Sports Online Courses

Jamie Smith joins me to discuss his transition from gym ownership into full-time education and coach mentorship. We dive into client-led exploration, simplifying movement assessment, avoiding nocebo language, and helping athletes discover better movement solutions without overcoaching. Jamie also shares his thoughts on breathing drills, ribcage mechanics, strength technique, sensory versus motor learning, and why good coaching often comes down to creating better environments for athletes to feel, explore, and learn. Today’s episode is brought to you by Hammer Strength and the Just Fly Sports Online Courses

In this episode, Ted Kroeten joins me to explore free play, underloading, and the idea of movement as a language. We discuss why great athletes often emerge from less-structured environments, how excessive coaching can interfere with creativity and fluency, and why doing less can sometimes produce better performance. Ted also shares lessons from Joy of the People, Brazilian soccer culture, ecological dynamics, late development, and the ideas behind his book, The Talent Thief. Today’s episode is brought to you by Hammer Strength and Lila Exogen.

In this show, Kristina Centenari explores the connection between breathing, nervous-system literacy, and athletic performance. We discuss her journey from Division I tennis to endurance sport, managing pressure and frustration, building awareness of physiological stress, and using breath training to improve composure. Kristina also breaks down breathing “gears” for runners, the relationship between relaxation and high performance, and why learning when to release tension may be just as important as learning to produce it. Today’s episode is brought to you by Hammer Strength

In this episode, Clifton Harski discusses athleticism through the lens of movement variety, adaptability, and lifelong physical practice. He explores his background in jumping and multi-sport play, developing athletic kids without premature specialization, and why training should create opportunities to express athleticism. Clifton also dives into kettlebell training for rhythm, relaxation, explosiveness, multi-directional strength and deceleration, along with programming ideas that bridge traditional strength work, movement skill, and real-world athletic performance. Today’s episode is brought to you by Hammer Strength and the Athletic Fusion Cohort https://www.instagram.com/hammerstrengthofficial/ https://justflysports.thinkific.com/courses/athletic-fusion

In this episode, Daniel Back gets into the role of variety, play, and subconscious learning in developing speed and athleticism. He discusses resisted sprinting, why he avoids over-coaching acceleration mechanics, lessons from the dunk community, and the value of broad movement experience. Dan also explores extensive tempo, longer sprints, training volume, and why specialization and constant measurement can sometimes limit long-term athletic development. Today’s episode is brought to you by Hammer Strength and the Vert Trainer

In this episode, Josh Bray discusses how endurance training shaped his coaching perspective, the role of games and hidden intention in athletic development, and how roughhousing and free play build adaptable movers. He also explores bucketing athletes as elastic, muscular, or hybrid, using force-plate data without overcomplicating the process, balancing readiness with meaningful training stress, and employing open-ended prescriptions that let athletes self-regulate volume while preserving intent, quality, and engagement. Today’s episode is brought to you by Hammer Strength.

Joel Smith shares 20 coaching ideas that permanently reshaped how he trains athletes and himself. Drawing from influential books, mentors, training systems, personal experiments, and hard-earned mistakes, Joel explores intensity and recovery, potentiation, individualized strength, motor learning, games, rhythm, biomechanics, group dynamics, ritual, and athlete profiling. More than a list of methods, the episode traces his evolution from conventional programming toward a more adaptive, embodied, and human approach to performance. Today’s episode is brought to you by Hammer Strength and the Just Fly Sports Online Courses https://www.instagram.com/hammerstrengthofficial/ https://justflysports.thinkific.com/

Ryan Paul talks about blending sprint training with high-intent isometrics, plyometrics, and force-absorption work to build faster, more resilient athletes. He discusses the influence of Jay Schroeder’s system, using readiness data to adjust training, and creating environments that deepen athlete buy-in and intent. Ryan also explores “New Athlete shape,” the value of training through controlled failure, and why speed development requires more than simply running harder or adding traditional strength. Today’s episode is brought to you by Hammer Strength.

Kevin Mulcahy talks about using constraints to develop more complete athletes, helping gifted players move beyond their natural strengths, and designing practices that build decision-making, speed, and adaptability. He shares practical ideas for manipulating time, space, and rules to shape behavior, discusses balancing coordination work with game-based learning, and explains how individual athlete profiles, including explosive versus endurance-oriented players, should influence speed development, conditioning, and long-term injury prevention. Today’s episode is brought to you by Hammer Strength and Lila Exogen.