Webinar

HIIT vs Norwegian 4x4: The Science Behind Interval Prescription

The interval you prescribe to improve VO2max could be quietly working against your athlete’s performance. And the reason is not the training — it’s who the athlete is.

About the Webinar:

Both HIIT and Norwegian 4×4 are proven to improve VO2max. So why do some athletes see real gains while others stagnate — or even get worse? Sebastian Weber will show why the same interval prescription produces completely different outcomes in different athletes, even when their VO2max is identical.

The aerobic side

Two athletes performing the exact same threshold-based interval can reach very different levels of oxygen uptake. Same workout, same VO2max, different aerobic stimulus. Sebastian will show the data and explain why.

The side nobody talks about

Neither HIIT nor Norwegian 4×4 only affects the aerobic system. There is a second training effect happening in parallel. For certain athletes, this effect can quietly undo the aerobic gains the training was supposed to deliver.

Real athlete data

This is not a theory session. Sebastian will walk through actual metabolic profiles showing how the same interval produces opposite training effects in two different athletes.

Live demonstration

Sebastian will show how to identify which interval approach fits which athlete, and how to set the right intensity for both the aerobic and glycolytic side.

Both methods are backed by science. But choosing the right one starts with understanding the athlete in front of you.

Learn and Apply New Techniques

Develop Effective Winter Training

Create training that maximize off-season improvements.

Elevate Coaching Skills

Implement strategies that lead to better athlete outcomes.

Master Data Application

Enhance your ability to analyze and utilize performance data.

Utilize Practical Tools

Get hands-on experience with INSCYD and seamlessly integrate platforms like AZUM.

Presenter

Sebastian Weber

Founder of INSCYD & World-renowned Sport Scientist

Sebastian Weber, a renowned sports scientist and creator of INSCYD, has significantly influenced elite sports training with his expertise in exercise physiology and metabolic profiling. His innovative methods have propelled multiple world champions to success.

Sebastian Weber has consulted the German Swimming Federation, the USA Triathlon Federation and other, showcasing his diverse skills. Athletes under his guidance have notably won 9 gold medals in time trials over a decade, underscoring his exceptional coaching impact in high-performance sports.

Want deeper insights? - Get 360° View of Your Athletes Performance with Detailed Metabolic Profile

INSCYD equips you with insights into your athletes’ physiological strengths and limitations, metabolic efficiency, energy contributions, and performance potential—all to drive targeted training decisions for peak performance.