In 1966 the USOC organised a conference where the consensuses of principles of altitude training were developed to enhance athletic performance.
The USSR & USA developed sports centres at altitude in the search of how best to prepare athletes for competitions at altitude.
3/
During the 70's East Germany utilised altitude training as one means to enhance performance allegedly first with swimmers, rowers & then middle & long distance runners.
East Germany applied a 21day sojourn at 2000m followed by 21day return to sea level prior to the Olympics
4/
After Canida's poor success with altitude at the 1988 Sepul Olympics the "Canadian Model" was developed. To attempt to reduce the offset of over training experienced by adopting the East German method.
By the 90s altitude training branched out beyond the original pioneers.
5/
The 90's & Hypoxic chambers.
Hypoxic tents & Chambers were already in use by the 80s and became increasingly popular by the 90s.
Athletes sleep in tents to increase their haemoglobin & hematocrit stimulated by the production of EPO in the body when levels of 02 are low.
6/
By the 2000 Olympics 5/14 finalists 9/21 (45%) of swimmers had attended an altitude training camp prior to the games.
By Athens 2004 5/7 Olympic medalists, 9/14 finalists and 14/20 (70%) of swimmers attended altitude training camps prior to the games.
7/
By the 00s use of altitude tents was becoming very popular.
However, athletes were declaring use of Hypoxic chambers as means to explain high levels of hematocrit levels to explain doping methods.
8/
Altitude & the Biological Passport (ABP):
A 2014 study within elite swimmers reported an altitude sojourn can cause abnormal ABP values for upto 4 weeks post altitude and needs to be considered as a confounding factor.
Due to the elevated levels attributed to altitude exposure impacting the ABP, this leaves a window of opportunity for athletes to use elicit methods straying from natural variations but explain them via altitude to avoid a sanction.
10/
Use of altitude in cyclists:
Within the Chris Boardman documentary 'The Final Hour' documenting his hour record in 2000 Boardman creates a hypoxic chamber in his home to stimulate an erythropotic response.
(~8mins)
11/
An article by Carmichaels Training Systems (Lance Armstrong's) coach details how Lance used altitude training camps during his Tour come back in 2008/09.
12/
Team Sky's documentation of altitude training camps has been well publicised. Here this 2016 article highlights some of Team Sky's approach to altitude. Multiple altitude camps are used for long durations with the next camp duration at a month in duration cited.
13/
Subsequently many professional cycling teams have used Mount Teide in Tenerife as a base for altitude training.
Teams include Sky, Astana & Cannondale.
Many of teams use altitude camps all over the world.
14/
Altitude training is not new! It's been used in sport since prior to the 1968 Olympics.
Only A few countries used altitude training in the 70s & 80s.
Altitude training was heavily used by the 90s.
By the turn of the 00s hypoxic chambers & tents were frequently used.
15/
Altitude training provides a legitimate means to increasing red blood cell & haemoglobin levels to enhance performance.
However, it can also be abused by dopers. It offers an excuse for athletes to dope & explain abnormal biological passport readings from altitude.
16/ Fin
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What does the scientific literature tell us about the effects of super shoes on running economy and race performance? Let’s investigate.
Long thread 🧵
*** Disclaimer***
Without directly testing Assefa in the laboratory we can not determine the effect of super shoes on her running economy and other physiological markers. However, we can explore what the academic literature may suggest is possible and/or not possible. 2/
The first study to examine super shoes was Hoogkamer et al. (2017) pioneering paper. Here researchers observed an enhancement in running economy (RE) on average by 4% compared to traditional racing shoes.
The lower the mass of the leg further away from the body the lower the energetic cost to move it.
East African's have small amounts of musculature in the lower leg. Their gastrocnemius is small and the bulk of the mass more proximal to the knee with alimb ankles.
The gender gap exists across all running distances as shown by Thibault et al (2010) study showsthe smallest margin in running events of 6.5% in the 100m but the largest difference 13.96% I the 4x100m.
Both the rider in question who rode away and the group of riders in question regarding the nandrolone tests where both high natural occurring levels and contamination were ruled out were part of Shane Sutton's squad of riders.
2/
As Shane's squad under went testing for nandrolone in an unacredited WADA lab against WADA's rules as few as 10 British Cycling staff were aware, including the gang: Brailsford, Sutton, Peters and Freeman.
One of anti-doping's biggest challenges is proving how a substance entered an athlete's body. Subsequently, the responsibility has been placed upon the athlete to prove how a substance has came into their body under WADA's Code of 'strict liability'.
Thread 1/
With anti-doping labs analytical sensitivity improving, athletes testing positive due to contamination of supplements for trace amounts of PED's offers a real concern to both athletes and the anti-doping authorities.
2/
Britain's CJ Ujah part of the Olympic 4x100m relay team who won the silver medal at the Tokyo Olympics has returned an AAF for the Selective Androgen Receptor Modulator's (SARM'S) Ostarine & S-23. He is likely to claim a contaminated supplement is the reason behind his AAF