HRV guides trained cyclists to new performance highs

Who, what & why In a previous post we covered studies that show using HRV to be significantly better than a standard training program in improving the performance of club and recreational runners. Now, a new study by researchers from the Universities of Alicante...

HRV response to breathing thin air

From a practical perspective, measuring your HRV at altitude and comparing to HRV at sea level can show how sensitive you are to the effects of altitude, and that if you are an elite level endurance athlete, you may be more sensitive than mere mortals! Here is the research.

The effects of overreaching on trained cyclists

Most endurance athletes are familiar with the term ‘overreaching’. That’s when you do high volumes of intensified training to cause supercompensation. But what actually happens to your body and what measures can you use to identify when overreaching has gone too far and become unproductive?

Periodisation – A shake up to training adaptation theory?

The stress – adaptation response considered to underlie improvements in performance caused by training has hardly been questioned in almost 100 years. Now, a new and thought-provoking review paper questions the basis for this model, especially as it applies to human...

Individualised cold water immersion to speed recovery

Who, what and why? Coldwater immersion baths are often used to speed up recovery in both endurance and team sports. It is thought to be effective by moving fluid back from muscle tissue into the circulation, preventing reduction in contractility and associated muscle...

GB du/triathlete’s HRV and race performance correlation

I have been using ithlete for over three years now but it’s only been since the start of the year (2017) that I have started using it to its full potential with an ithlete Pro subscription. In previous years I would exclusively just use the iPhone app to help guide me...

Atrial Fibrillation (AF) and HRV

AF affects the performance of the heart, especially amongst older, less healthy people. But it also affects a significant percentage of Masters athletes. A large study over a 20 year period shows an interesting correlation between Atrial Fibrillation (AF) and HRV. There are optimum values of HRV and resting heart rate, above and below which the chances of developing AF increase significantly.

Athletes: Fit but unhealthy?

Prof Paul Laursen & Dr Phil Maffetone have consistently preached the message that elite level performance needn’t be at the cost of your long term health. Their recent opinion piece highlighting why is summarised here.

Fat adaptation for exercise – how far can it go?

Despite a great deal of discussion about, and anecdotal evidence to support the benefits of a low carbohydrate high fat (LCHF) diet, there have been few studies examining the degree to which athletes’ metabolisms have been altered to take advantage of this dramatic change in fuel for exercise.

How well does HRV reflect overall health?

Who, what and why? Heart rate variability, or HRV, has long been considered to reflect overall health. Since the 1980s, Professor Steven Porges described HRV as an index not only of stress, but of vulnerability to stress. In other words, the higher someone’s HRV, the...

Can HRV help detect concussion?

Who, what & why Traumatic brain injuries, such as concussion, are unfortunately an occupational hazard in many contact sports. As I write this, sad news was announced today that 23 year old rugby player Lilly Partridge had died following a head injury during...

Can your Morning HRV Predict your Cycling Performance?

Who, what, why? In two previous posts, we summarised studies that showed an almost unbelievable ability for night-time / morning heart rate variability (HRV) to predict the changes in performance of both swimmers and club runners. HRV and Swimming Time Trial Results...

We need your data!

Since we introduced subjective scales for sleep, fatigue, soreness, stress, mood & diet in ithlete v3.0 at the beginning of the year, we have been intrigued with the idea of seeing how these factors relate to changes in our daily HRV. We included a facility in the...

How accurate are consumer pulse sensors?

Not very – according to a review recently undertaken by CNET. Senior Editor Sharon Profis collaborated with Cardiologist Dr Jon Zaroff to compare some popular health tracker devices to medical ECG equipment at rest and during treadmill exercise at quite high...

Energy drinks and HRV

A short summary of Dr Mike T. Nelson’s paper on the impact of a Monster energy drink on heart rate, heart rate variability (HRV) and ride time to exhaustion.

HRV after exercise: implications for training prescription

Introduction Researchers Jamie Stanley & Jonathan Peake from the University of Queensland, with the guidance of heart rate variability (HRV) sports research supremo Martin Buchheit have put together an important review article with over 120 references. The paper...

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