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Jem Arnold

Tag: Hard-Start

Why Perform Hard-Start VO2max Intervals?

Hard-start intervals use an initial hard effort at a power output above what would be sustainable for the intended interval duration, to enhance oxygen uptake and cardiac output. Let's talk about some of the reasons for why we might want to perform hard-start intervals, when they might be appropriate for our training, and when they might not be.

Jem Arnold Science Review, Training Optimization 8 Comments December 9, 2020January 8, 2021 13 Minutes

Workload, Intensity, and VO2max Trainability

Here are some of my current thoughts and questions on the topic of VO2max trainability, time near VO2max, hard-start and intermittent intervals, and adaptations toward capacity and efficiency.

Jem Arnold Science Review, Training Optimization 25 Comments June 30, 2020January 7, 2021 12 Minutes

Comparing 30/15 VO2max Intervals

I want to look at my other favourite VO2max workout, the Rønnestad style Hard-start 30/15s VO2max workout. This was the protocol I arrived at based on Rønnestad, Seiler, Buchheit & Laursen, and others' research into optimizing interval prescription for maximizing adaptations to VO2max.

Jem Arnold Training Optimization 18 Comments March 13, 2019January 7, 2021 8 Minutes

  • Blood Flow Limitation of the Iliac Artery (FLIA) Resources

Email me at jem@sparecycles.blog

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Recent Popular Posts

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My name is Jem Arnold

I write about physiology and endurance training optimisation.

I'm an Exercise Physiology PhD student, Physiotherapist, and endurance coach / consultant.

I try to integrate ideas from the perspectives of an athlete, performance specialist, clinician, researcher, and especially as a curious enthusiast who just wants to learn from the smartest people in whatever room I find myself in.

Everything written is my own inexpert opinion. Any good ideas should be attributed to the many smart people I have learned from. Any bad ideas are due to my own temporary misunderstanding. My current opinions will most certainly change as I continue to learn. Nothing written constitutes professional advice.

Recent Posts

  • Muscle Oxygenation Response Profiles during 5-1 Cycling Assessment
  • A 3-Component Model for Athlete Classification in Sport Science
  • Thresholds, Constructs, and Confidence Intervals
  • Sustainable Training
  • Predicting Cycling Time To Exhaustion from Paraspinals Muscle Oxygenation
  • Evaluating the Relationships between Muscle Oxygenation, Ventilation, and Lactate Thresholds
  • CoreTemp Heat Accumulation Test
  • Why Perform Hard-Start VO2max Intervals?
  • Call For Participants (closed)
  • Workload, Intensity, and VO2max Trainability
  • Muscle Oxygenation Overview
  • Internal Training Load Measurement with Muscle Oxygenation
  • Speculating on Physiology in the Lab vs on the Road
  • Comparing VO2 Master Pro to TrueOne 2400 – Part 2
  • Comparing VO2 Master Pro to TrueOne 2400 – Part 1
  • Surgery Race Report
  • Modeled VO2 During Ramp Tests and Intervals
  • Metabolic Steady State – Inside vs Outside
  • Deriving Power from VO2 and VO2 from Power
  • VO2 Measured to Modeled

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