Most Recent Posts for Physiology

Ok, here goes. I’ve been meaning to write this for a while, but time and energy have not allowed it. But I’ve just been involved in some lively Twitter discussions, ultimately productive, so I’m going to try to share some thoughts around this issue of transgender females (male-to-female transitioning people) competing in women’s sport. It’s […]

Tags:
High performance management Physiology

Real quick-fire today, with some links and things I found interesting this week: On Wednesday, I wrote a short thought on whether the conventional wisdom around how elite athletes “expire” and fade with age may be outdated. Seems to me that we hear a lot more about older athletes succeeding, and even dominating, than before. […]

Tags:
Marketing &amp sponsorship Most interesting Physiology Short thought on sport Uncategorized

Yesterday, I was sent this link. It says that Dwain Chambers, he of THG and a doping ban in 2004 (!), is making a comeback, hoping to qualify for Team GB at the European Indoor Championships. At the age of 40. Well, almost 41. My first thought was “Of course he is”, and then upon […]

Tags:
African running doping High performance management marathons Physiology Rugby Running Physiology Short thought on sport Uncategorized US sports

Along with two prominent scientists, we have recently called for the research study on testosterone's effects in women athletes to be retracted. This research is part of the IAAF's policy on hyperandrogenism in athletics, but we have analyzed aspects of the study, and discovered significant and numerous errors. This article describes those errors, and calls for scientific integrity and transparency from both the IAAF and the British Journal of Sports Medicine.

Tags:
African running Caster Semenya High performance management Physiology Sports management Sports Science

Boston 2018 was one for the archives. A brutally cold, wet and windy day made for incredible, unpredictable elite races, and a whole lot of DNFs! There's a theory that women did better in this regard than men, and this post explores cold physiology, and what factors MIGHT explain why women MIGHT be able to handle the extreme cold better than men

Tags:
Boston Marathon fluid heat &amp thermoregulation Physiology

The latest four minute mull explores pacing strategies, physiology and fatigue. In so doing, I offer a theory for the limits to human performance existing at the point where the "reserve" that physiology maintains is no more, the endspurt disappears, and humans are at the limits of what is physiologically possible.

Tags:
Fatigue/Central Governor Four minute mull Physiology Running track-and-field

This is part 3 of the 3-part series on head injuries in rugby. It explores the two most interesting and relevant findings of the research, looking at how the height of the tackle and the body position of the players influences head injury risk. These two items formed the strongest evidence that was used to change the high tackle laws in the sport. We also discuss the next steps and future application of the research.

Tags:
Physiology Rugby Sports management

Coronary arteries, as seen via cardiac catheterization.
photo: pinterest.com

Tags:
Physiology Running

As I've previously mentioned, I've recently started working with the Heart Center in their new

Tags:
Physiology Running

Where do we go next? Now that Eliud Kipchoge has taken us to the brink of a sub-2 hour marathon, have the boundaries of human endurance been recalibrated? Can we expect a 1:59 soon? Or did the Nike staged event simply move some of the boundaries aside? This piece looks at potential benefits, and asks whether we should expect to see a speeding up, or a slowing down, in the foreseeable future?

Tags:
African running Event analysis Fatigue/Central Governor High performance management marathons Marketing &amp sponsorship Physiology running shoes

Eliud Kipchoge has run a marathon in 2:00:25, coming within sight of breaking the 2-hour barrier. How did he do it, and what might we expect in future? This post analyzes the splits, the tactics and the prospects for the 1:59:59 in the future.

Tags:
African running Event analysis Fatigue/Central Governor High performance management marathons Marketing &amp sponsorship Physiology running shoes

The Nike-Breaking 2 attempt will happen in Monza this weekend. I don't think a sub-2 is possible, but what will be fascinating is to see a) how they go about pacing the attempt, and what happens if it starts to fall away; and b) what the collective advantage is of all the tactics employed. I predict 2:01:55 at best, a DNF is also a real possibility. More thoughts here.

Tags:
African running Event analysis High performance management Marketing &amp sponsorship Physiology running shoes

Around 100 years ago, the world's leading scientists got together to discuss "eugenics", the idea that we could selectively breed "good stock" for the benefit of the human race. This happened openly, with the support of the USA's judicial system, and looks macabre and horrific in hindsight. It made me wonder about over-confidence, and knowledge, and how experts shouldn't ever profess absolute certainty, on anything.

Tags:
High performance management Physiology Sports Science Uncategorized

Last week, inspired by some recent schoolwork and research, and mildly prompted by

Tags:
Physiology Running

Nike recently unveiled the Vaporfly Elite, the shoe it has been working on to help it break the 2-hour marathon barrier. The shoe incorporates a "spring plate", and is claimed to have significant performance implications. I think the shoe, and the incorporation of spring-like devices in all shoes, should be banned for future credibility of performance. Here's why

Tags:
High performance management Marketing &amp sponsorship Physiology running shoes Sports Science Uncategorized

Kenenisa Bekele kicks off the 2017 Marathon season in Dubai, with what is a potential world record. It's the year of the "Breaking-2" after Nike's announcement last December. This article is an expanded version of one I wrote for an SA Newspaper on Jan 15th, 2017

Tags:
African running doping High performance management marathons Marketing &amp sponsorship Physiology Running Physiology Uncategorized

Nike's announcement that they're backing three top marathoners to break the 2 hour marathon barrier in Spring 2017, is the latest installment in the sub-2 hype. Relevance and legitimacy aside, what would it take, product and course wise, to achieve? I look at shoes and downhill running to illustrate the concept of physiological barriers and how they might be shifted.

Tags:
African running High performance management marathons Marketing &amp sponsorship Physiology Running Physiology Uncategorized

I’ve spent the last week, a very stimulating one, at the IMG Academy in Brandenton Florida, where I’ve lectured on the IAAF Level 5 and USATF Level 3 coaching courses.  The specific theme of this year’s Academy was Youth Sport, and I did four lectures in total – three on Talent ID and Specialization issues, […]

Tags:
African running High performance management Marketing &amp sponsorship Physiology Rugby Talent vs training Uncategorized US sports

Much of what you read here on this site is my attempt to translate the research I'm interested in, and which can be applied to the real world, in a way that makes it more "palatable" to you. This post, however, summarizes some of the "source" research, the scientific articles that I've had published in the last 12 months, for those wanting to see the academic side of the discussions we have.

Tags:
African running Barefoot running Fatigue/Central Governor Physiology Rugby Running Physiology running shoes Running technique Sports Science Uncategorized

Caster Semenya won the Monaco 800m in 1:55.33, at a canter, and is the surest bet for gold in Rio 2016. She's also the surest bet for controversy, and will kick start an explosive, aggressive debate. This post introduces some of the concepts, and addresses some issues around our approach to this difficult issue.

Tags:
African running Caster Semenya Physiology Series Uncategorized

Caster Semenya's likely gold medal in Rio is going to be one of the most controversial stories of the Games, if not the history of the Olympics. She is, unwillingly, the known image of a sex-verification controversy in sport, asking questions over whether a woman should compete against other women. In this piece, I interview Joanna Harper, an expert on matters of transgender science and performance, for her comprehensive views

Tags:
African running Caster Semenya High performance management Physiology Uncategorized

Caster Semenya's likely gold medal in Rio is going to be one of the most controversial stories of the Games, if not the history of the Olympics. She is, unwillingly, the known image of a sex-verification controversy in sport, asking questions over whether a woman should compete against other women. In this piece, I interview Joanna Harper, an expert on matters of transgender science and performance, for her comprehensive views

Tags:
African running Caster Semenya High performance management Physiology Uncategorized

Caster Semenya's likely gold medal in Rio is going to be one of the most controversial stories of the Games, if not the history of the Olympics. She is, unwillingly, the known image of a sex-verification controversy in sport, asking questions over whether a woman should compete against other women. In this piece, I interview Joanna Harper, an expert on matters of transgender science and performance, for her comprehensive views

Tags:
African running Caster Semenya High performance management Physiology Uncategorized

After five years of watching bad science, defensiveness from both sides, and extremist advocacy rather than balance, I've written an article which is an appeal for nuance on the issue of low carbohydrate diets. The article first appeared in the SA papers, and this is the longer, unedited version.

Tags:
Physiology Sports Science Uncategorized