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Predicting Olympic weightlifting performance at the international level

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Summary of a study investigating the totals required to medal in international competitions.

Who

Top 15 male athletes from the Europeans, Worlds, and Olympics from 1998 to 2021 (4,011 samples from old weight categories, 639 samples from the new weight categories)

Design

Data analysis of historical totals (snatch + clean&jerk) of 1-15 best athletes at the Europeans, Worlds, and Olympics from 1998 to 2021 (4,011 samples) + data from the performances in the new weight classes from the 2020+1 Tokyo Olympics (639 samples).

Outcome measures/tests

  • competition totals
  • competition zones:
    • zone 1 - places 1st to 3rd (medal positions)
    • zone 2 - 4th & 5th
    • zone 3 - 6th to 8th
    • zone 4 - 9th & 10th
    • zone 5 - 11th to 15th

Main results

Predicting Olympic weightlifting performance at the international level - infographic

  • differences in totals were mostly trivial between years, so they were pooled together for each competition type (Europeans, Worlds, Olympics)

  • the prediction models performed well but their strength depended on the competition type, performance zone, and weight category.

  • on average, the predicted total displayed a difference from the actual total of -1.1±3.5% (-4±11kg) for the European Championships, 0.8±3.3% (2±10kg) for the Worlds, and 3.7±2.5% (12±9kg) for the Olympics. Also, the error increased the lower down the performance zone (i.e. 11th -15th).

  • medal zone (place 1 -3) predicted and actual totals for the Europeans, Worlds, and Olympics:

Competition
Europeans
predicted total [kg]
actual total (±SD) [kg]
difference [kg]
Worlds
predicted total [kg]
actual total (±SD) [kg]
difference [kg]
Olympics
predicted total [kg]
actual total (±SD) [kg]
difference [kg]
55kg class
Competition
Europeans
predicted total [kg]
266
actual total (±SD) [kg]
251 (±9)
difference [kg]
15
Worlds
predicted total [kg]
288
actual total (±SD) [kg]
270 (±16)
difference [kg]
19
Olympics
predicted total [kg]
294
actual total (±SD) [kg]
not contested
difference [kg]
NA
61kg class
Competition
Europeans
predicted total [kg]
287
actual total (±SD) [kg]
287 (±5)
difference [kg]
0
Worlds
predicted total [kg]
308
actual total (±SD) [kg]
310 (±6)
difference [kg]
-2
Olympics
predicted total [kg]
314
actual total (±SD) [kg]
303 (±10)
difference [kg]
11
67kg class
Competition
Europeans
predicted total [kg]
308
actual total (±SD) [kg]
314 (±5)
difference [kg]
-6
Worlds
predicted total [kg]
328
actual total (±SD) [kg]
330 (±6)
difference [kg]
-2
Olympics
predicted total [kg]
333
actual total (±SD) [kg]
328 (±6)
difference [kg]
5
73kg class
Competition
Europeans
predicted total [kg]
327
actual total (±SD) [kg]
339 (±4)
difference [kg]
-11
Worlds
predicted total [kg]
345
actual total (±SD) [kg]
351 (±8)
difference [kg]
-6
Olympics
predicted total [kg]
351
actual total (±SD) [kg]
351 (±12)
difference [kg]
1
81kg class
Competition
Europeans
predicted total [kg]
351
actual total (±SD) [kg]
358 (±9)
difference [kg]
-8
Worlds
predicted total [kg]
367
actual total (±SD) [kg]
373 (±5)
difference [kg]
-6
Olympics
predicted total [kg]
373
actual total (±SD) [kg]
369 (±5)
difference [kg]
4
89kg class
Competition
Europeans
predicted total [kg]
371
actual total (±SD) [kg]
369 (±6)
difference [kg]
2
Worlds
predicted total [kg]
385
actual total (±SD) [kg]
372 (±2)
difference [kg]
13
Olympics
predicted total [kg]
391
actual total (±SD) [kg]
Not contested
difference [kg]
NA
96kg class
Competition
Europeans
predicted total [kg]
387
actual total (±SD) [kg]
380 (±15)
difference [kg]
7
Worlds
predicted total [kg]
401
actual total (±SD) [kg]
403 (±10)
difference [kg]
-3
Olympics
predicted total [kg]
407
actual total (±SD) [kg]
392 (±9)
difference [kg]
15
102kg class
Competition
Europeans
predicted total [kg]
399
actual total (±SD) [kg]
381 (±7)
difference [kg]
18
Worlds
predicted total [kg]
412
actual total (±SD) [kg]
395 (±2)
difference [kg]
17
Olympics
predicted total [kg]
418
actual total (±SD) [kg]
Not contested
difference [kg]
NA
109kg class
Competition
Europeans
predicted total [kg]
413
actual total (±SD) [kg]
439 (±34)
difference [kg]
-26
Worlds
predicted total [kg]
425
actual total (±SD) [kg]
422 (±11)
difference [kg]
3
Olympics
predicted total [kg]
431
actual total (±SD) [kg]
421 (±10)
difference [kg]
10
>109kg class
Competition
Europeans
predicted total [kg]
446
actual total (±SD) [kg]
455 (±20)
difference [kg]
-9
Worlds
predicted total [kg]
457
actual total (±SD) [kg]
457 (±20)
difference [kg]
0
Olympics
predicted total [kg]
462
actual total (±SD) [kg]
451 (±33)
difference [kg]
11

Take home message

For a clinician & coach
The prediction models performed well but their strength depended on the competition type, performance zone, and weight category. On average, the predicted total displayed a difference from the actual total of -1.1±3.5% (-4±11 kg) for the European Championships, 0.8±3.3% (2±10 kg) for the Worlds, and 3.7±2.5% (12±9 kg) for the Olympics. Also, the error increased the lower down the performance zone (i.e. 11th -15th).
For a parent
The prediction models performed well but their strength depended on the competition type, performance zone, and weight category. Predicted totals were the closest to the actual totals for the Worlds (the average difference was less than 1% or 2 kg). Also, the error increased the lower down the performance zone (i.e. 11th -15th).
For an athlete
The prediction models performed well but their strength depended on the competition type, performance zone, and weight category. Predicted totals were the closest to the actual totals for the Worlds (the average difference was only 0.8±3.3% or 2±10 kg). Also, the error increased the lower down the performance zone (i.e. 11th -15th).

Original article

Chavda S, Comfort P, Lake JP, Bishop C, Turner AN. Predicting weight category–specific performance zones for Olympic, World, and European Weightlifting Competitions. The Journal of Strength & Conditioning Research. 2023 Oct 1;37(10):2038-45.

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