Light Paper - What is the absolute limit for human athletes? Here’s the science…
Figure. Katie Ledecky won seven Olympic gold medals and 19 world championship gold medals, the most in the history of a female swimmer (a) (1).
What is the absolute limit for human athletes? Here’s the science…(b)
Alberto Dolci 
Keywords: limits, swimming, sports, training, world record
https://n2t.net/ark:/21207/NADAR.v2i165.40
ABSTRACT
The Olympics have drawn to a close and this year saw the shattering of 19 different (2) world records, some by staggering margins. US swimmer Kate Ledecky (Figure) broke the 800 metre freestyle record, which she herself had previously set, by almost two seconds – a mammoth margin compared to the tenths and hundredths of seconds which often decide Olympic success. As we continue to swim faster, jump higher and throw further than ever before, these performances have left us wondering just how much further athletic performance can be pushed.
Many have tried to establish what the absolute limits for human performance are and science can provide us with some clues as to what they could be and when we will likely reach them.
INTRODUCTION
It is clear, that there has been a dramatic improvement in athletic ability over the past century. This is reflected by the continuous improvement of world records in track and field athletics from the early 1900s, which tend to follow a linear rather than an exponential trend. However, this progress is not distributed evenly across the various disciplines of track and field athletics.
Over the last 100 years, large improvements have been made in the javelin and shot put, for example, while much smaller gains have been made in short-distance races, such as the 100, 200 and 400 metres. In 1909, for example, the men’s shot put record was 15.54 metres; the current record, set in 1990, is 23.12 metres. This means that we had an increase of almost 50% in throwing distance in just over 80 years. By contrast, the improvement we have seen in the men’s 100 metres over the last century is a relatively small 8%.
The rate of improvement (3) for women, however, has been extraordinary, and overall greater than that observed for men over an identical period of time. Looking at the 100 metres, for example, women improved their performance by a huge 30% in just 80 years. As we have seen previously, men had just an 8% improvement in more than 100 years. This difference is even bigger in many other disciplines.
It has also previously been demonstrated that the sequence of records (4) in the history of athletics is not distributed in a random fashion, but that a distinct regularity exists (5).
WHY ARE WE GETTING BETTER?
Could such regular improvements over time be due to cyclical training techniques, whereby a novel training technique is applied to a generation of athletes until something more effective is found and then applied to the next generation? Or could it be down to the more effective discovery of elite athletes in consecutive human generations (6)? The honest answer is that evidence is currently lacking as to which potential mechanisms might be dominant.
Some factors do seem to play a part, however. First, economic advances and broader coverage of sports by the media have contributed to a growth in the base number of athletes, including those competing at higher levels. Statistically speaking, this increases the chance that “extreme outliers” (or peak performers) will occur in a normal distribution of athletes, and may partly account for the improvement in records.
Second, genetics (4) might be involved. Several genes influence athletic performance, which can thus be considered a polygenic trait – one in which a large number of genes, each one having a relatively small effect, contributes to an outcome. A high degree of natural selection will have occurred over time, and the best athletes might be increasingly characterised by a prevalence of these genes.
This may also account for the lower improvement of athletic performance in sprints (for example, 100, 200 and 400 metres) when compared with middle and long-distance events (1,500 and 10,000 metres and the marathon).
The performance of sprint athletes mostly depends on two variables: reaction time and fast muscle fibres. In endurance athletes, meanwhile, peak performance is regulated by slow muscle fibres, and by aerobic capacity. The latter can substantially be increased by either regular training or manipulation (blood doping, for example). Conversely, reaction time, which is strongly dependent on the nervous system, has a limited margin of improvement when compared with muscular power and aerobic capacity. Indeed, the nervous system cannot increase the speed of transmission of an eletric impulse, therefore there is little potential to improve reaction time through training. Here, genetics is key.
Equally, jumping events are limited by tendon stress limits, which cannot be overcome past a certain natural limit and this might explain why the curve of improvement for these specialities is now almost flat.
Whether and by how much genetic selection has helped the progression of world records may soon be known, however, as high throughput microarray-based epigenetic technology (7), which allows DNA profiling, will soon be widely available.
The introduction of professional coaching, improvements in training techniques (8) and the introduction of ergogenic aids (9) – substances used for the purpose of enhancing performance, in the form of nutritional supplements for example – have also profoundly changed sports performance. Investigating the science of running economy has greatly improved long distance running, while the Fosbury flop technique improved high jump performance.
REACHING A PEAK
If these considerations are true, then limits will be approached, and a point will be reached, perhaps soon, when performance levels become essentially static, with only the occasional, once-every-generation “super-athlete” able to set new records. Indeed, this situation may have already been reached in some events, such as the long jump and short distance runs, as progression of world records in these events has nearly stopped or has substantially slowed.
Doping practices (10) might also have played a role in the progression of some world records. Also, the greater the role that equipment and technology plays a part in a sport, the greater the likely ongoing improvement. Thus, ergonomics/wind resistant clothes and better running shoes have enabled runners to optimise energy consumption.
The performances of athletes are the product of genetic endowment, hard work and, increasingly, the contribution of science. The latter began many years ago, when scientists, physiologists, nutritionists, biomechanists and physicists began applying their knowledge to the benefit of athletic performance. As a result, merely practising a sport for hours is no longer enough to enable an athlete to win.
Future limits to athletic performance will be determined less and less by the innate physiology of the athlete, and more and more by scientific and technological advances and by the still evolving judgement on where to draw the line between what is “natural” and what is artificially enhanced. A previous study (11) determined that by the year 2027, world records would have reached 99% of their asymptotic value, which represents the limit for human performance.
OBS.: A tabela a seguir possui barras de rolagem ao final, para melhor visualização em dispositivos com telas pequenas.
|
|
Asympt |
Predicted Interval |
Year of |
Credibility |
Period |
||
|
Events |
value |
variation from asympt |
99,95% |
Interval |
number |
||
|
Cycling - 500m Time Trial (W) |
33,289s |
32,483 |
34,084 |
2034,6 |
2002,2 |
2176,6 |
1 |
|
Cycling - Individual Pursuit (W) |
203,272s |
194,021 |
212,627 |
2015,8 |
1995,8 |
2580,5 |
2 |
|
Cycling - Sprint (W) |
10,689s |
10,347 |
11,033 |
2031,9 |
1994,3 |
2163,1 |
1 |
|
Cycling - 1km Time Trial (M) |
57,944s |
55,721 |
60,196 |
2064,5 |
2000,6 |
2318,5 |
3 |
|
Cycling - Individual Pursuit (M) |
247,298s |
228,227 |
266,962 |
2026,0 |
1986,3 |
2580,2 |
2 |
|
Cycling - Sprint (M) |
9,728s |
9,676 |
9,778 |
2025,4 |
2012,5 |
2044,0 |
2 |
|
Cycling - Team Pursuit (M) |
234,582s |
230,940 |
238,277 |
2030,5 |
2005,7 |
2098,3 |
2 |
|
Speed Skating - 500m (W) |
37,019s |
36,998 |
37,040 |
2007,5 |
2005,1 |
2010,4 |
3 |
|
Speed Skating - 1000m (W) |
72,817s |
72,285 |
73,353 |
2016,6 |
2005,1 |
2045,2 |
4 |
|
Speed Skating - 1500m (W) |
108,164s |
104,731 |
111,538 |
2099,0 |
2051,3 |
2177,1 |
3 |
|
Speed Skating - 3000m (W) |
224,599s |
217,443 |
231,723 |
2100,6 |
2057,1 |
2167,2 |
2 |
|
Speed Skating - 5000m (W) |
397,708s |
389,901 |
405,567 |
2056,5 |
2028,2 |
2100,2 |
2 |
|
Speed Skating - Short Track 500m (W) |
42,119s |
41,149 |
43,068 |
2060,2 |
2037,9 |
2092,4 |
1 |
|
Speed Skating - Short Track 1000m (W) |
88,493s |
86,568 |
90,436 |
2046,8 |
2023,1 |
2084,0 |
1 |
|
Speed Skating - Short Track 1500m (W) |
136,956s |
133,085 |
140,879 |
2023,9 |
2004,9 |
2078,6 |
2 |
|
Speed Skating - 3000m relay (W) |
249,876s |
246,991 |
252,740 |
2014,9 |
2004,6 |
2036,2 |
2 |
|
Speed Skating - 500m (M) |
33,771s |
32,607 |
34,936 |
2074,1 |
2007,1 |
2268,7 |
5 |
|
Speed Skating - 1000m (M) |
66,838s |
66,461 |
67,216 |
2009,5 |
2003,9 |
2019,4 |
3 |
|
Speed Skating - 1500m (M) |
101,888s |
100,894 |
102,874 |
2017,5 |
2006,0 |
2046,1 |
6 |
|
Speed Skating - 5000m (M) |
350,716s |
331,245 |
370,072 |
2181,5 |
2085,5 |
2350,9 |
3 |
|
Speed Skating - 10000m (M) |
758,138s |
738,967 |
777,388 |
2023,0 |
1999,8 |
2369,4 |
4 |
|
Speed Skating - Short Track 500m (M) |
40,944s |
40,443 |
41,452 |
2014,4 |
2002,1 |
2050,8 |
2 |
|
Speed Skating - Short Track 1000m (M) |
83,426s |
80,996 |
85,895 |
2042,6 |
2007,7 |
2144,0 |
2 |
|
Speed Skating - Short Track 1500m (M) |
128,816s |
124,884 |
132,790 |
2028,3 |
2004,4 |
2098,6 |
2 |
|
Speed Skating - 5000m relay (M) |
395,775s |
386,571 |
405,085 |
2034,2 |
2009,0 |
2090,7 |
1 |
|
Swimming - 50m free style (W) |
23,987s |
23,517 |
24,456 |
2019,4 |
1993,1 |
2139,0 |
2 |
|
Swimming - 100m free style (W) |
53,108s |
52,539 |
53,673 |
2034,3 |
1998,5 |
2175,9 |
5 |
|
Swimming - 200m free style (W) |
115,176s |
114,627 |
115,737 |
2027,3 |
2011,0 |
2050,5 |
2 |
|
Swimming - 400m free style (W) |
241,906s |
241,749 |
242,063 |
2010,9 |
2006,6 |
2015,6 |
2 |
|
Swimming - 800m free style (W) |
485,965s |
477,137 |
494,864 |
2036,2 |
2014,4 |
2065,5 |
2 |
|
Swimming - 1500m free style (W) |
939,524s |
937,824 |
941,246 |
2027,2 |
2021,8 |
2032,8 |
3 |
|
Swimming - 100m backstroke (W) |
59,331s |
59,162 |
59,499 |
2019,2 |
2007,9 |
2034,8 |
4 |
|
Swimming - 200m backstroke (W) |
124,669s |
122,821 |
126,562 |
2032,6 |
2012,2 |
2063,1 |
3 |
|
Swimming - 100m breaststroke (W) |
63,832s |
62,612 |
65,038 |
2104,3 |
2056,9 |
2176,4 |
3 |
|
Swimming - 200m breaststroke (W) |
138,147s |
136,776 |
139,525 |
2088,4 |
2067,5 |
2113,7 |
3 |
|
Swimming - 100m butterfly (W) |
55,833s |
54,126 |
57,530 |
2053,3 |
1997,8 |
2240,1 |
3 |
|
Swimming - 200m butterfly (W) |
125,051s |
124,389 |
125,721 |
2046,0 |
1998,8 |
2212,3 |
2 |
|
Swimming - 200m medley (W) |
129,067s |
127,814 |
130,295 |
2017,5 |
1998,3 |
2051,6 |
3 |
|
Swimming - 400m medley (W) |
272,397s |
271,859 |
272,924 |
2020,0 |
2012,3 |
2028,9 |
2 |
|
Swimming - 4*100m medley relay (W) |
233,449s |
230,630 |
236,306 |
2051,1 |
2025,8 |
2088,8 |
2 |
|
Swimming - 4*100m freestyle relay (W) |
215,063s |
214,324 |
215,805 |
2024,6 |
2015,0 |
2036,0 |
3 |
|
Swimming - 50m free style (M) |
21,5s |
21,338 |
21,659 |
2022,4 |
2009,7 |
2039,2 |
1 |
|
Swimming - 100m free style (M) |
47,353s |
46,806 |
47,899 |
2054,8 |
2025,9 |
2094,2 |
2 |
|
Swimming - 200m free style (M) |
103,445s |
101,607 |
105,272 |
2034,4 |
1991,2 |
2308,5 |
4 |
|
Swimming - 400m free style (M) |
216,389s |
214,462 |
218,304 |
2069,4 |
2047,8 |
2096,8 |
4 |
|
Swimming - 800m free style (M) |
454,336s |
451,785 |
456,907 |
2045,7 |
2033,3 |
2060,5 |
5 |
|
Swimming - 1500m free style (M) |
870,014s |
866,048 |
873,946 |
2026,9 |
2017,1 |
2038,7 |
3 |
|
Swimming - 100m backstroke (M) |
52,228s |
51,730 |
52,727 |
2080,4 |
2054,0 |
2115,6 |
3 |
|
Swimming - 200m backstroke (M) |
112,446s |
111,164 |
113,748 |
2080,1 |
2047,0 |
2129,0 |
3 |
|
Swimming - 100m breaststroke (M) |
57,991s |
57,223 |
58,758 |
2101,6 |
2064,7 |
2153,8 |
3 |
|
Swimming - 200m breaststroke (M) |
126,91s |
125,293 |
128,520 |
2062,9 |
2033,9 |
2104,7 |
4 |
|
Swimming - 100m butterfly (M) |
50,16s |
49,233 |
51,069 |
2015,2 |
2001,0 |
2133,8 |
3 |
|
Swimming - 200m butterfly (M) |
112,462s |
111,465 |
113,483 |
2054,1 |
2041,6 |
2068,2 |
1 |
|
Swimming - 200m medley (M) |
113,67s |
112,398 |
114,954 |
2067,9 |
2035,8 |
2118,3 |
2 |
|
Swimming - 400m medley (M) |
242,685s |
240,830 |
244,544 |
2072,9 |
2060,7 |
2086,4 |
1 |
|
Swimming - 4*100m medley relay (M) |
208,407s |
206,508 |
210,314 |
2065,5 |
2042,3 |
2097,4 |
2 |
|
Swimming - 4*100m freestyle relay (M) |
190,918s |
190,062 |
191,777 |
2058,3 |
2048,2 |
2069,4 |
2 |
|
Swimming - 4*200m freestyle relay (M) |
418,482s |
413,795 |
423,125 |
2072,6 |
2036,3 |
2130,1 |
3 |
|
Track & Field - 100m (W) - version 1 |
10,426s |
10,007 |
10,841 |
2013,0 |
1974,1 |
2754,4 |
3 |
|
Track & Field - 100m (W) - version 2 |
10,727s |
10,617 |
10,837 |
1996,3 |
1978,2 |
2066,1 |
3 |
|
Track & Field - 200m (W) |
21,111s |
20,510 |
21,711 |
2054,7 |
1986,6 |
2277,3 |
3 |
|
Track & Field - 400m (W) |
47,119s |
46,252 |
48,003 |
2016,3 |
1989,6 |
2076,1 |
2 |
|
Track & Field - 800m (W) |
110,285s |
107,269 |
113,313 |
2061,8 |
2016,6 |
2139,9 |
2 |
|
Track & Field - 1500m (W) |
230,181s |
229,907 |
230,457 |
1998,0 |
1992,8 |
2004,4 |
1 |
|
Track & Field - 5000m (W) |
847,533s |
835,598 |
859,742 |
2060,0 |
2021,7 |
2134,9 |
1 |
|
Track & Field - 10000m (W) |
1758,127s |
1732,766 |
1783,648 |
2007,1 |
1993,9 |
2033,2 |
1 |
|
Track & Field - Marathon (W) |
8010,233s |
7871,285 |
8151,998 |
2045,1 |
2030,5 |
2063,1 |
1 |
|
Track & Field - 20km walk (W) |
5101,599s |
5067,330 |
5135,802 |
2027,5 |
2017,8 |
2039,4 |
3 |
|
Track & Field - 100m Hurdles (W) |
12,095s |
11,994 |
12,196 |
2022,8 |
2003,0 |
2054,2 |
1 |
|
Track & Field - 400m Hurdles (W) |
52,194s |
51,886 |
52,505 |
2018,2 |
1998,1 |
2069,6 |
2 |
|
Track & Field - 4*100m relay (W) |
40,983s |
40,088 |
41,893 |
2027,5 |
1984,7 |
2160,8 |
2 |
|
Track & Field - 4*400m relay (W) |
193,686s |
190,532 |
196,782 |
2011,0 |
1988,3 |
2060,6 |
1 |
|
Track & Field - High jump (W) |
2,099m |
2,063 |
2,135 |
2000,6 |
1982,2 |
2085,2 |
3 |
|
Track & Field - Pole vault (W) |
5,146m |
4,878 |
5,422 |
2045,9 |
2013,1 |
2128,0 |
2 |
|
Track & Field - Long jump (W) |
7,547m |
7,465 |
7,629 |
1993,0 |
1985,7 |
2013,1 |
3 |
|
Track & Field - Triple jump (W) |
15,631m |
15,093 |
16,171 |
2002,9 |
1991,7 |
2094,4 |
1 |
|
Track & Field - Discus throw (W) |
78,905m |
76,642 |
81,153 |
2043,4 |
2014,9 |
2089,9 |
3 |
|
Track & Field - Hammer throw (W) |
78,49m |
77,266 |
79,700 |
2019,4 |
2008,9 |
2036,9 |
1 |
|
Track & Field - Shot put (W) |
22,8m |
22,647 |
22,952 |
2004,8 |
1997,5 |
2013,6 |
3 |
|
Track & Field - Heptathlon (W) |
7341,529 |
7122,168 |
7563,400 |
1997,3 |
1983,9 |
2073,4 |
1 |
|
Track & Field - 100m (M) |
9,726s |
9,677 |
9,776 |
2019,2 |
1996,8 |
2126,5 |
3 |
|
Track & Field - 200m (M) |
19,193s |
18,990 |
19,400 |
2040,4 |
1999,5 |
2121,9 |
1 |
|
Track & Field - 400m (M) |
43,009s |
42,617 |
43,401 |
2036,4 |
1991,0 |
2130,5 |
3 |
|
Track & Field - 800m (M) |
100,584s |
98,943 |
102,194 |
2052,2 |
1981,3 |
2315,4 |
3 |
|
Track & Field - 1500m (M) |
205,178s |
202,899 |
207,432 |
2025,9 |
1991,0 |
2154,9 |
4 |
|
Track & Field - 3000m Steeple chase (M) |
468,774s |
462,866 |
474,806 |
2067,5 |
2020,9 |
2158,1 |
3 |
|
Track & Field - 5000m (M) |
754,01s |
744,178 |
763,755 |
2033,0 |
1996,4 |
2142,9 |
3 |
|
Track & Field - 10000m (M) |
1575,759s |
1572,589 |
1578,987 |
2008,6 |
2002,8 |
2017,2 |
3 |
|
Track & Field - Marathon (M) |
7388,47s |
7324,533 |
7452,136 |
2080,3 |
2054,5 |
2112,3 |
2 |
|
Track & Field - 20km walk (M) |
4622,507s |
4601,707 |
4643,639 |
2020,9 |
2009,3 |
2036,7 |
3 |
|
Track & Field - 50km walk (M) |
12877,216s |
12823,958 |
12930,889 |
2042,4 |
2030,3 |
2056,8 |
2 |
|
Track & Field - 110m Hurdles (M) |
12,711s |
12,497 |
12,926 |
2107,6 |
2034,6 |
2235,7 |
2 |
|
Track & Field - 400m Hurdles (M) |
46,537s |
46,319 |
46,755 |
2021,6 |
2005,1 |
2044,3 |
2 |
|
Track & Field - 4*100m relay (M) |
37,105s |
36,682 |
37,531 |
2054,0 |
2004,7 |
2169,2 |
3 |
|
Track & Field - 4*400m relay (M) |
173,383s |
169,462 |
177,285 |
2035,7 |
1972,2 |
2775,3 |
2 |
|
Track & Field - High jump (M) |
2,467m |
2,433 |
2,501 |
2027,4 |
1997,8 |
2090,9 |
4 |
|
Track & Field - Pole vault (M) |
6,154m |
6,118 |
6,190 |
2001,1 |
1990,8 |
2028,2 |
5 |
|
Track & Field - Long jump (M) |
891,454m |
857,991 |
924,691 |
1991,7 |
1965,4 |
2225,7 |
2 |
|
Track & Field - Triple jump (M) |
18,495m |
18,163 |
18,826 |
2057,9 |
2007,3 |
2159,1 |
3 |
|
Track & Field - Discus throw (M) |
76,022m |
74,030 |
77,975 |
2050,2 |
2016,2 |
2106,5 |
3 |
|
Track & Field - Hammer throw (M) |
87,189m |
85,169 |
89,167 |
1992,0 |
1982,2 |
2043,9 |
2 |
|
Track & Field - Shot put (M) |
23,833m |
23,178 |
24,477 |
2077,1 |
2036,7 |
2137,6 |
2 |
|
Track & Field - Decathlon (M) |
9088,487 |
8930,790 |
9248,429 |
2041,3 |
1994,9 |
2234,2 |
3 |
|
WeightLifting - C&J 48kg (W) |
118,77kg |
116,408 |
121,102 |
2017,0 |
2002,2 |
2080,9 |
1 |
|
WeightLifting - C&J 53kg (W) |
128,211kg |
125,324 |
131,089 |
2006,6 |
1999,6 |
2042,3 |
1 |
|
WeightLifting - C&J 58kg (W) |
140,905kg |
134,718 |
147,042 |
2017,7 |
2001,9 |
2098,7 |
1 |
|
WeightLifting - C&J 63kg (W) |
142,836kg |
140,864 |
144,817 |
2021,3 |
2012,0 |
2037,1 |
1 |
|
WeightLifting - C&J 69kg (W) |
155,877kg |
149,193 |
162,540 |
2018,7 |
2004,4 |
2063,9 |
1 |
|
WeightLifting - C&J 75kg (W) |
161,216kg |
154,475 |
168,068 |
2016,8 |
2003,2 |
2069,6 |
1 |
|
WeightLifting - C&J 75pluskg (W) |
185,388kg |
163,540 |
207,413 |
2016,7 |
1998,7 |
2500,6 |
1 |
|
WeightLifting - Snatch 48kg (W) |
99,248kg |
93,290 |
105,252 |
2017,9 |
2002,3 |
2090,5 |
1 |
|
WeightLifting - Snatch 53kg (W) |
103,364kg |
100,942 |
105,788 |
2007,7 |
2000,7 |
2031,3 |
1 |
|
WeightLifting - Snatch 58kg (W) |
111,931kg |
103,754 |
120,154 |
2013,8 |
1999,7 |
2152,2 |
1 |
|
WeightLifting - Snatch 63kg (W) |
117,178kg |
114,676 |
119,692 |
2017,4 |
2005,3 |
2049,0 |
1 |
|
WeightLifting - Snatch 69kg (W) |
123,685kg |
116,691 |
130,696 |
2014,6 |
1999,4 |
2191,6 |
1 |
|
WeightLifting - Snatch 75kg (W) |
127,043kg |
120,637 |
133,453 |
2016,1 |
1999,6 |
2191,6 |
1 |
|
WeightLifting - Snatch 75pluskg (W) |
137,713kg |
137,395 |
138,039 |
2004,3 |
2002,6 |
2006,6 |
1 |
|
WeightLifting - C&J superheavyweight (M) |
263,793kg |
263,396 |
264,182 |
2006,4 |
2003,2 |
2010,6 |
4 |
|
WeightLifting - C&J lightheavyweight (M) |
218,636kg |
212,266 |
224,989 |
2002,4 |
1993,2 |
2490,1 |
5 |
|
WeightLifting - C&J lightweight (M) |
198,202kg |
197,042 |
199,386 |
2014,4 |
2002,8 |
2042,4 |
5 |
|
WeightLifting - C&J flyweight (M) |
163,053kg |
158,000 |
168,224 |
2024,0 |
1998,2 |
2097,3 |
3 |
|
WeightLifting - Snatch superheavyweight (M) |
213,864kg |
208,702 |
218,874 |
2010,3 |
1995,4 |
2119,1 |
5 |
|
WeightLifting - Snatch middleheavyweight (M) |
188,093kg |
188,055 |
188,130 |
1999,0 |
1998,4 |
1999,6 |
4 |
|
WeightLifting - Snatch lightheavyweight (M) |
187,42kg |
178,280 |
196,455 |
2064,4 |
2007,5 |
2174,6 |
2 |
|
WeightLifting - Snatch middleweight (M) |
173,826kg |
173,675 |
173,977 |
2007,0 |
2005,7 |
2008,4 |
4 |
|
WeightLifting - Snatch bantamweight (M) |
139,797kg |
137,964 |
141,632 |
2031,0 |
2009,9 |
2064,8 |
5 |
Table. Predicted WR asymptotic value, year of the 99.95% limit, credibility intervals and period number per event. Women and men are respectively symbolized by (W) and (M). C&J are Clean and Jerk weight lifting events. Two versions of the Track women 100 m are presented, version 1 includes the last WR, version 2 leaves it out. (c) (12).
Although world records initially progressed according to a linear model in the Olympic disciplines of track and field athletics, in most instances the progression curve has flattened out over the past 20 years (for example, in running and jumping), while in some sports (for example, shot put) no improvement has been recorded since the mid-1990s. Hence, if the present conditions prevail for the next 20 years, this will support the hypothesis that most of the male world records will probably no longer be substantially improved, although some female world records can still be expected to be broken, given increased access and participation.
Nevertheless, if gene doping happens (13), we may never be able to predict what the limits of human performance are. The probability is that further improvements will be mostly due to chance (occurrence of “extreme outliers” in the normal distribution of top-class athletes), the use of mechanical aids, the introduction of genetic or other forms of doping and, finally, environmental and ecosystem revolutions (pollution, for example). These would probably make any current mathematical model unreliable for forecasting progression of world records in athletics.
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(6) Norton K, Olds T. Morphological Evolution of Athletes Over the 20th Century. Sports Medicine [Internet]. 2001 Feb [cited 2022 Nov 7];31(11) DOI 10.2165/00007256-200131110-0000. Available from: https://www.researchgate.net/profile/Kevin-Norton-3/publication/11766594_Morphological_Evolution_of_Athletes_Over_the_20th_Century/links/0912f51143a64601d9000000/Morphological-Evolution-of-Athletes-Over-the-20th-Century.pdf
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(9) Thein LA, Thein JM, Landry GL. Ergogenic aids. Phys Ther [Internet]. 1995 May [cited 2022 Nov 8];75(5):426-439. DOI 10.1093/ptj/75.5.426. Available from: https://pubmed.ncbi.nlm.nih.gov/7732086/.
(10) BBC [Internet]. London; 2016 Jan 11. Athletics doping crisis: UK Athletics wants to reset world records; [cited 2022 Nov 9]; Available from: https://www.bbc.com/sport/athletics/35277793
(11) Berthelot G, Thibault V, Tafflet M, Escolano S, El Helou N, Jouven X, et al. The Citius End: World Records Progression Announces the Completion of a Brief Ultra-Physiological Quest. PLoS ONE 2006;3(2):e1552; [cited 2022 Nov 9]; Available from: https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0001552
(12) Berthelot G, Thibault V, Tafflet M, Escolano S, El Helou N, Jouven X, et al. The Citius End: World Records Progression Announces the Completion of a Brief Ultra-Physiological Quest. PLoS ONE 2006;3(2):e1552. Table of predicted WR asymptotic value, year of the 99.95% limit, credibility intervals and period number per event. Women and men are respectively symbolized by (W) and (M). C&J are Clean and Jerk weight lifting events. Two versions of the Track women 100 m are presented, version 1 includes the last WR, version 2 leaves it out.
(13) The Conversation [Internet]. Melbourne; 2016 Aug 08. Explainer: what is gene doping – and will any athletes at Rio 2016 have tried it?; [cited 2022 Nov 8]; Available from: https://theconversation.com/explainer-what-is-gene-doping-and-will-any-athletes-at-rio-2016-have-tried-it-63230
FOOTNOTES
(a) Michael Ledecky, CC BY-SA 4.0, via Wikimedia Commons
(b) Article adapted for publication in accordance with the journal's submission rules, under a Creative Commons license from The Conversation.
(c)Copyright: © 2008 Berthelot G, Thibault V, Tafflet M, Escolano S, El Helou N, Jouven X, et al. (11)
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