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Personal record
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Personal record
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A personal record, or a personal best (abbreviated to PB), is an individual's best performance in a given sporting discipline. It is most commonly found in athletic sports, such as track and field, other forms of running, swimming and weightlifting.

The term came from the world of running, referring to a person's best time in a race of a specific distance. So, if someone runs their first 5K race in 28:45, that's their PB for the 5-kilometre distance. If they run faster than 28:45 in a subsequent 5K race, then they have a new PB for that distance.[1] Over time, PB came to mean any new record in a sport that could be performed by a single person.

Although the term "personal best" is increasingly used in official sports statistics, it can also refer to an unofficial best individual performance.[2]

References

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Personal record

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A personal record, commonly abbreviated as PR, refers to an individual's best performance achieved to date in a specific sporting event, exercise, or , such as the fastest completion time for a race distance or the maximum weight lifted in a particular movement. This milestone serves as a benchmark for tracking personal progress and improvement over time in disciplines including running, , , and general fitness . In athletic contexts, a PR is distinct from broader records like world or national marks, focusing instead on individual achievement rather than comparative standings among competitors. It is frequently celebrated as a motivational tool, signifying enhanced strength, endurance, or skill, and often prompts athletes to set higher goals for future endeavors. While the terms "personal record" and "personal best" (PB) are often used interchangeably, some traditions in emphasize PR for officially verified performances in sanctioned events.

Definition and Terminology

Core Definition

A personal record, often abbreviated as PR and synonymous with personal best (PB), constitutes an individual's optimal performance in a specific measurable sporting event or discipline. It represents the highest level of achievement personally attained by the , such as the shortest elapsed time, greatest distance covered, or maximum weight lifted under standardized conditions. This benchmark serves as a marker of personal progress and capability within the context of competitive or training activities. Central to the are its key attributes: the must be directly accomplished by the , without reliance on teammates, and it is tied to objective, quantifiable metrics. These include temporal measurements like seconds in a 100-meter sprint, linear distances such as meters in a , or mass equivalents like kilograms in a , all verified through official timing, measurement, or weighing protocols. Such records are typically tracked over an athlete's career or a defined period, like a , to reflect sustained improvement. In contrast to team records, which aggregate contributions from multiple participants in collective events like relays or crew sports, personal records emphasize solitary accomplishments in disciplines. For example, a runner achieving a personal record of 3:45 in the mile race during a sanctioned meet highlights this focus on personal metrics, independent of .

Variations in Terminology

In sports, particularly athletics and fitness disciplines, "personal record" (PR) and "personal best" (PB) serve as primary synonyms for an athlete's top performance in a given event or exercise, with "lifetime best" also used to underscore an enduring all-time achievement. These terms, along with their abbreviations PB and PR, are routinely logged in training journals, competition results, and performance trackers to document individual milestones. Contextual nuances arise in how these terms are applied across disciplines. In running communities focused on time-based events, "PB" is often favored to denote the quickest elapsed time, such as in a marathon or 5K race. In contrast, "PR" prevails in field events like or in American contexts, and in strength sports such as , where it typically signifies peak metrics like maximum distance or heaviest load lifted. While interchangeable in many settings, PR may carry a of verified, official competition results, whereas PB can extend to training or unofficial sessions. Regional and cultural preferences further shape terminology usage. speakers, especially in athletics, predominantly employ "PB," a convention shared with Canadian running circles. In the United States, "PR" is more common, particularly within and communities, reflecting localized linguistic habits in sports reporting and coaching. , the international governing body, officially uses "personal best" (PB) for an athlete's top performance in events.

Historical Development

Origins in Athletics

The concept of the personal record in athletics emerged during the amid the organization of structured competitions in and the , where athletes and officials began manually recording individual times and distances to gauge performance. These early meets, often held by schools, groups, or athletic clubs, relied on rudimentary tools like stopwatches to measure sprints and longer runs, fostering a culture of self-tracking among participants. Precision chronometers, introduced in the early 1800s, enabled more accurate timing of events, shifting focus from mere victory to quantifiable improvement. The roots of such tracking can be traced to ancient civilizations, including Greek and Roman athletics, where informal of personal achievements in training and competitions laid groundwork for later formalized records, though systematic documentation began in the . A pivotal development occurred with the 1896 in , the first modern Olympiad, which introduced standardized timing protocols using mechanical stopwatches for all track events, allowing for consistent benchmarking of personal achievements across international competitions. This event, featuring 12 athletics disciplines with times recorded to the nearest fifth of a second, marked a turning point by formalizing the documentation of individual performances and enabling athletes to compare their results against prior efforts. The Olympics' emphasis on precise elevated personal records from informal to recognized metrics of progress. Influential figures like , a prominent coach and administrator in late-19th-century American , played a key role in promoting personal improvement through systematic approaches to athletic training. This approach underscored the value of individual benchmarks in building discipline and excellence. In the pre-digital era, athletes depended on handheld stopwatches and personal notebooks for recording personal records, with measurements often verified by meet officials during informal or club-level events. By the late 19th century, this practice gained visibility through athlete writings that highlighted personal milestones, reflecting the growing emphasis on lifelong performance tracking in .

Evolution in Modern Sports

Following , the concept of personal records expanded significantly into beyond early athletics, driven by international federations' efforts to standardize events and performance tracking. In , the Fédération Internationale de Natation (FINA, now ) advanced record recognition in the by limiting world records to metric pool lengths (50 meters), which streamlined the verification of individual best times in competitive events. Similarly, in , the (IWF) formalized junior world records in 1962 and classified referees into categories in 1962, enabling consistent evaluation of personal achievements across standardized weight classes and lifts like the snatch and . Technological advancements in the and revolutionized the precision and accessibility of personal record verification across multiple disciplines. Electronic timing systems, first fully adopted at the 1968 Mexico City Olympics, became widespread in the for track, , and other timed events, measuring performances to the hundredth of a second and reducing in establishing individual bests. In the , the introduction of video analysis tools, leveraging affordable technology, allowed coaches to capture, replay, and dissect athlete movements, facilitating detailed confirmation of personal records in technique-dependent sports such as and team games. The 1990s marked a shift toward , with integrating personal records as core metrics in programs for and power sports. Coaches and physiologists used personal bests to assess adaptations to load and recovery, applying principles from exercise science to customize regimens that targeted improvements in metrics like or maximal strength. This era saw the establishment of systematic monitoring protocols, where deviations from personal records informed adjustments in periodized . By the 2000s, personal records permeated non-Olympic multisport events like triathlons, with digital databases enabling widespread tracking for amateur participants. Platforms affiliated with and Ironman began aggregating race results from the early 2000s, allowing athletes to log and compare personal bests across distances such as Olympic (1.5 km swim, 40 km bike, 10 km run), fostering a global community of record-keeping among recreational competitors.

Applications in Sports

Track and Field Events

In track and field, personal records (PRs) in track events are determined by the shortest times achieved in running disciplines, measured to the hundredth of a second using fully automatic timing systems approved by World Athletics. These time-based PRs apply to sprints, middle-distance, and longer races, where athletes continually strive to improve their performances under standardized conditions. For example, in the 100m dash, elite male athletes often set PRs under 10 seconds, such as 9.58 seconds, representing peak individual speed. However, the validity of these times for official PR recognition is contingent on wind conditions; a tailwind averaging more than +2.0 m/s over the duration of the race renders the performance ineligible, as it provides unfair assistance estimated to improve times by approximately 0.10 seconds compared to still air. Field events focus on PRs measured by distance or height, emphasizing explosive power and technique in jumps and throws. In horizontal jumps like the , PRs are recorded as the farthest distance from the takeoff board to the nearest mark in the landing area, with elite male athletes achieving over 17 meters as a benchmark of excellence. Vertical jumps, such as the , track the highest bar cleared without knocking it down, where PRs exceeding 2.4 meters signify world-class performance for men. Throwing events, including the shot put and , measure the distance from the throwing circle to where the implement first lands, adhering to rules that nullify fouls beyond the legal zone. These measurements ensure precision and fairness, using certified tapes or electronic devices. In combined events, PRs are expressed as total points from standardized scoring tables that convert individual event performances into numerical values, summing them to yield an overall score. The men's comprises 10 events—100m, , , , 400m, 110m hurdles, discus, , , and 1500m—where a total exceeding 8,000 points marks an elite PR, as seen in the of 9,126 points. The women's includes seven events—100m hurdles, , , 200m, , , and 800m—with top PRs around 7,000 points, exemplified by the of 7,291. These tables, updated periodically by , use mathematical formulas to assign points based on performance levels, promoting balanced athleticism. All official PRs in must comply with measurement standards, which mandate the use of certified venues featuring approved tracks, pits, and equipment to guarantee accuracy and comparability. Facilities are classified into levels (Class 1 for international eligibility), requiring regular inspections and documentation of dimensions, such as 400m ovals with 1.22m-wide lanes for track events. Performances outside these venues, or without proper wind gauging and timing, do not qualify for official PR status, preserving the integrity of athletic achievements.

Swimming and Aquatic Sports

In pool swimming, personal records are established through the fastest times achieved in standardized events, measured to the hundredth of a second using electronic touch pads and automatic timing systems approved by . Competitions occur in long-course pools of exactly 50 meters or short-course pools of 25 meters, with lane lengths certified to a tolerance of +0.01 m (no negative deviation) for accuracy, ensuring fair comparisons across meets. Common distances include 50 m, 100 m, 200 m, 400 m, 800 m, and 1500 m, where elite performers, such as those in the 100 m freestyle, often record times under 50 seconds, highlighting improvements in technique and training. These records emphasize precision in starts, turns, and finishes, with swimmers tracking lane-specific performances to account for minor variations in pool conditions. Open water swimming personal records prioritize endurance and completion times over sprint speeds, typically in events of 5 km, 10 km, or 25 km held in natural bodies of water like lakes, rivers, or oceans. Times are recorded to the tenth of a second via wrist-worn microchip transponders that detect finish-line plates, with environmental factors such as currents, wind, and —required to stay between 16°C and 31°C—affecting outcomes and necessitating adaptive strategies. For instance, a 10 km race might see times vary by several minutes based on tidal influences, making personal records a benchmark of resilience rather than absolute . Team relays, such as the 4 × 1.5 km mixed event, allow individual legs to contribute to personal benchmarks under similar conditions. Stroke-specific personal records are maintained separately for freestyle, , , and due to distinct biomechanical demands, with each stroke governed by precise rules on arm pulls, kicks, and body positioning to optimize efficiency. requires simultaneous arm recovery and a , often yielding the most power-intensive times; involves positioning with a streamlined start; demands symmetric pulls and a two-beat kick; and freestyle allows flexible arm-overhead strokes for speed. Turns and starts significantly influence records—for example, flip turns in freestyle and can shave seconds compared to open turns in and —while individual medley events combine all four strokes in sequence, tracking overall times rather than partial splits. World Aquatics sets the global standards for these personal records, requiring all times to originate from sanctioned competitions with certified facilities and officials to ensure validity. In relay events, only the lead-off swimmer's time qualifies as an individual personal record, as it uses a standing dive start identical to solo races, whereas flying starts in subsequent legs—common in freestyle and medley relays—do not count toward stroke-specific or distance personal bests due to the momentum advantage. This distinction maintains the integrity of individual achievements while recognizing relay dynamics in team contexts.

Strength and Weightlifting Sports

In strength and sports, personal records (PRs) primarily revolve around maximal one-repetition lifts in specific exercises, emphasizing explosive power and technical precision under strict judging criteria. In , athletes track PRs for the snatch, where a is lifted overhead in one continuous motion, and the clean-and-jerk, involving a clean to the shoulders followed by a jerk overhead; totals exceeding 200 kg are common among elite male competitors in heavier weight classes, such as the +109 kg category. These PRs must adhere to (IWF) rules, including full extension of arms and hips without balance loss, with referees disqualifying lifts for technical faults to ensure validity. Powerlifting focuses on PRs in three compound lifts: the squat, requiring descent until thighs are parallel to the ground before standing; the , a horizontal press from chest to lockout; and the , lifting a bar from the floor to full hip extension. Exemplary PRs include deadlifts over 300 kg in the 83 kg class under (IPF) standards, which divide athletes into weight classes ranging from 52 kg to 120+ kg to normalize comparisons. Lifts are verified by three referees signaling with flags for depth, pause, and control, promoting standardized PR achievement across federations. Cross-training disciplines like incorporate PRs that blend maximal strength with , such as weighted pull-ups where athletes add resistance (e.g., 20-50 kg vests) to achieve the highest number of strict repetitions or heaviest single-rep load. These PRs often occur in workouts combining weights with high-repetition schemes, tracked via apps or logs to monitor progress in functional movements. Achieving PRs in these sports requires —incrementally increasing load, volume, or intensity over sessions—to build strength safely and minimize injury risk, as abrupt jumps can lead to strains in joints or muscles. This method, supported by guidelines from authorities, ensures adaptations occur without exceeding recovery capacity, particularly in technique-heavy lifts prone to form breakdowns.

Recording and Verification

Official Recognition

Official recognition of personal records in sports requires that the performance be achieved in a sanctioned governed by international federations, ensuring adherence to standardized criteria for validity. These criteria typically include the presence of qualified technical officials, calibrated equipment compliant with technical specifications, and appropriate environmental conditions, such as wind speeds not exceeding +2.0 m/s on average for events like sprints or jumps. For instance, in athletics, performances must occur in competitions approved by , where all trials in field events are measured immediately to the nearest 0.01 m, even if invalid, to support accurate logging. Similarly, in , valid results demand the use of automatic officiating equipment or semi-automatic timing systems, with times recorded to 1/100th of a second, and must comply with pool specifications and swimwear homologation standards approved by (as of June 2025). In weightlifting, lifts are deemed valid only if they meet technical rules for snatch and clean & jerk movements, verified by referees using white-light signals, and occur in (IWF) calendar events excluding lower-tier bronze-level competitions (as of November 2025). Governing organizations play a central role in validating and logging personal records for elite athletes, integrating them into official databases that support global rankings and historical performance lists, separate from world records. maintains world rankings based on the average of performance scores from valid results, incorporating personal bests to determine seeding, progression, and overall athlete standings across track, field, , and combined events. logs qualifying times and personal bests through its General , using them for entry standards in championships and maintaining discipline-specific rankings that reflect sanctioned competition outcomes (as of June 2025). The IWF registers personal records in its protocols during events, verifying them via jury oversight and including them in age- and bodyweight-category lists to track athlete development and competitive history (as of November 2025). These databases ensure personal records contribute to all-time performance compilations, providing a verifiable benchmark for athletes while excluding applications. Disputes over personal record validity are resolved through structured appeal processes, often involving immediate protests and post-event reviews. While athletes must comply with anti-doping rules for all performances, specific doping verification applies to world record attempts rather than personal records. In athletics, challenges to performance measurements or rule infringements can be protested in writing within 30 minutes to the jury of appeal, which may use video evidence for verification. handles protests similarly, requiring submission within 30 minutes to the referee or jury, with appeals possible to the for equipment-related issues (as of June 2025). For , the IWF jury can reverse referee decisions unanimously using video playback technology, and athletes may use challenge cards for one review per event, while lifts eligible for records undergo doping verification before ratification (as of November 2025). These procedures uphold the integrity of personal records, ensuring they reflect legitimate achievements under controlled conditions.

Personal Tracking Methods

Athletes often employ manual logging methods to monitor their personal records during sessions, utilizing notebooks, journals, or spreadsheets to document key metrics such as times, distances, repetitions, and effort levels. These tools allow for detailed , enabling individuals to identify patterns in performance, such as optimal conditions or recovery needs, which support ongoing improvement without external validation. For instance, weightlifters and runners have historically used such logs to track session-specific data, fostering motivation and preventing by providing a tangible record of progress. Digital tools have increasingly supplemented traditional methods, with applications like and offering GPS-tracked monitoring for activities including running and swimming. enables users to record activities via mobile devices or compatible GPS watches, automatically detecting personal records on specific segments and providing analytics to visualize improvements over time. Similarly, integrates with wearables to capture real-time metrics like pace, , and during pool or open-water swims, allowing athletes to view, edit, or delete personal records directly in the app or web interface for precise . These platforms emphasize individual tracking, often syncing data from devices to generate insights without requiring official oversight. Integrating personal record tracking into training involves setting interim goals, such as weekly personal bests, to progressively build toward lifetime achievements. This approach, rooted in periodized training principles, breaks down long-term objectives—like achieving a sub-40-minute 10K—into manageable short-term targets, such as increasing weekly run distances by 10%, which enhances consistency and reduces injury risk. Athletes monitor these milestones through their logs or apps to adjust efforts, ensuring steady progression. Personal records tracked via these methods are typically maintained privately to protect sensitive performance , though athletes may selectively share them with coaches for feedback or on for motivation. Under regulations like GDPR, such —encompassing biometric and metrics—requires explicit before disclosure, safeguarding against unauthorized use that could impact competitive edges or personal . This confidentiality allows individuals to focus on internal growth without external pressures.

Significance and Impact

Motivational Role

Achieving a personal record (PR) significantly enhances an athlete's , the belief in one's ability to succeed in specific situations or accomplish a task, by providing tangible evidence of personal progress and capability. This boost in self-efficacy encourages athletes to set more challenging goals, fostering a cycle of improved performance and persistence in training and competition. In training programs, PRs serve as benchmarks for tracking progress and structuring training to optimize adaptations and peak performance over time. On a long-term basis, the pursuit of achievements like PRs can sustain motivation among athletes by promoting goal-oriented mindsets that enhance commitment and perseverance. However, unrelenting pressure to achieve can contribute to overtraining syndrome if not balanced with sufficient recovery, leading to , decreased performance, and increased risk.

Comparison to Other Records

Personal records (PRs) represent an athlete's individual lifetime best performance in a specific event, serving as a subjective benchmark tied solely to their personal history, whereas denote the absolute global pinnacle of achievement, ratified by international governing bodies like as the best verified performance across all competitors. For instance, Usain Bolt's 9.58-second mark in the men's 100 meters, set at the 2009 World Championships in , stands as the current as of November 2025, but it functions merely as Bolt's own PR for other athletes who have not matched or exceeded it. This distinction underscores PRs' personal and non-competitive nature compared to ' objective, universally recognized status requiring strict ratification criteria, including facility certification and doping verification. In contrast to national records, which capture the top performance by any representing a specific and are ratified by that nation's athletics federation under World Athletics guidelines, PRs transcend geographic boundaries and focus exclusively on an individual's progression without national affiliation. National records, such as a 's fastest 100-meter time, reflect national pride and eligibility for international selection, whereas PRs remain private milestones unaffected by or team representation. PRs also differ from season bests (SBs), which denote an athlete's top within a single or competitive year, as compiled in seasonal top lists by ; PRs, by definition, encompass an athlete's all-time career high and persist across multiple seasons until surpassed. While an SB might highlight temporary form, such as a runner's fastest marathon time in 2025, a PR tracks enduring personal improvement over years. Within the broader of athletic achievements, PRs form the foundational layer, providing the essential personal benchmark that athletes must exceed to qualify for and challenge higher-tier records like season bests, national marks, or world records, thereby serving as a prerequisite for ascending to collective or global recognition.

References

  1. https://www.yourdictionary.com/personal-record
  2. https://marathonhandbook.com/pr-vs-pb/
  3. https://www.onepeloton.com/blog/pr-workout-meaning
  4. https://runkaizen.com/running-glossary/personal-record-pr
  5. https://www.hwpotraining.com/blog/what-does-a-personal-record-mean-and-why-is-it-important
  6. https://dictionary.cambridge.org/us/dictionary/english/personal-best
  7. https://www.worldathletics.org/download/download?filename=175739a3-b6be-4e84-914c-15d7ce791665.pdf&urlslug=Terms%20and%20abbreviations
  8. https://www.runnersworld.com/beginner/a20820586/a-guide-to-common-running-terms-0/
  9. https://usatf.org/news/2023/tinch%25E2%2580%2599s-110m-hurdles-world-lead-earns-usatf-athlet
  10. https://usatf.org/news/2025/hurdles-record-closes-out-usatf-national-junior-ol
  11. https://trackclassic.com/brief-history-of-track-and-field-in-the-usa/
  12. https://runningstudies.co.uk/history-of-timing
  13. https://www.gearpatrol.com/watches/a90985/brief-history-stopwatches-olympics/
  14. https://www.amazon.com/Training-Sports-Classic-Reprint-Walter/dp/133057706X
  15. https://www.worldaquatics.com/news/1909366/celebrating-110-years-of-history
  16. https://iwf.sport/weightlifting_/history/
  17. https://www.omegawatches.com/en-us/chronicle/1976-seven-perfect-scores
  18. https://journals.humankinetics.com/view/journals/ijspp/12/s2/article-pS2-2.pdf
  19. https://www.scienceofrunning.com/2010/06/evolution-and-history-of-training.html
  20. https://extremephysiolmed.biomedcentral.com/articles/10.1186/2046-7648-2-27
  21. https://www.worldathletics.org/download/download?filename=febae412-b673-4523-8321-e1ed092421dc.pdf&urlslug=C2.1
  22. https://speedendurance.com/2013/05/12/windy-records-in-track-and-field/
  23. https://www.worldathletics.org/download/download?filename=92a127cb-d569-4db3-88e8-370e634ab2cd.pdf&urlslug=C2.1%20-%20Technical%20Rules
  24. https://www.worldathletics.org/download/download?filename=53f7d332-be0c-434c-8467-1d9078966147.pdf&urlslug=IAAF
  25. https://worldathletics.org/news/news/scoring-tables-2025
  26. https://worldathletics.org/records/all-time-toplists/combined-events/decathlon/outdoor/men/senior
  27. https://worldathletics.org/records/all-time-toplists/combined-events/heptathlon/outdoor/women/senior
  28. https://www.worldathletics.org/download/download?filename=851ad441-8624-420b-8468-7335168bd0f7.pdf&urlslug=CERTIFICATES%20-%20Certified%20Athletics%20Facilities
  29. https://www.worldathletics.org/about-iaaf/documents/technical-information
  30. https://resources.fina.org/fina/document/2024/06/28/dcaceb72-3012-4b65-90fb-e4dda53a3132/AQUA-Pool-Certification-Swimming_NEW.pdf
  31. https://www.worldaquatics.com/swimming/records
  32. https://www.olympics.com/en/news/olympic-record-swim-freestyle-backstroke-breaststroke-butterfly-relay-medley
  33. https://resources.fina.org/fina/document/2024/01/29/6570516f-e8c1-4e30-a907-de085a6cb29c/01022024_AQUA_2024_Open_Water_Swimming_Manual_V5__FINAL-_DVdB.pdf
  34. https://resources.fina.org/fina/document/2023/01/04/65961a45-bde5-4217-b666-ca1f5dc2d1f0/1_Swimming-Technical-Rules.04.01.2023.pdf
  35. https://resources.fina.org/fina/document/2023/04/05/c8f2e9bf-54bb-4e95-a534-116671049357/WORLD_AQUATICS_COMPETITION_REGULATIONS.pdf
  36. https://www.usaswimming.org/docs/default-source/timesdocuments/general-docs/times-and-recognition-policy-manual.pdf
  37. https://www.olympics.com/en/news/weightlifting-olympics-rules-history-snatch-clean-and-jerk
  38. https://www.powerlifting.sport/championships/records
  39. https://www.openpowerlifting.org/records
  40. https://www.crossfit.com/essentials/heavy-days
  41. https://www.ahajournals.org/doi/10.1161/cir.0b013e31829b5b44
  42. https://pmc.ncbi.nlm.nih.gov/articles/PMC10279870/
  43. https://resources.fina.org/fina/document/2025/07/01/ed3110a4-2291-411d-8526-6f641bd9237a/Competition-Regulations_June-2025_Clean-updated-01.07.2025-.pdf
  44. https://iwf.sport/wp-content/uploads/downloads/2025/11/IWF-TCRR-2025-as-of-05-November-2025.pdf
  45. https://members.believeperform.com/journaling-the-journey-keeping-a-training-log/
  46. https://barbend.com/best-running-apps/
  47. https://support.garmin.com/en-US/?faq=unLSr8lk0z5EUCi0k8Yys8
  48. https://us.humankinetics.com/blogs/excerpt/set-short-term-and-long-term-goals
  49. https://www.sportsbusinessjournal.com/Articles/2025/02/20/privacy-in-sports-stay-ahead-of-the-game/
  50. https://pmc.ncbi.nlm.nih.gov/articles/PMC10675036/
  51. https://publications.aap.org/pediatrics/article/153/2/e2023065129/196435/Overuse-Injuries-Overtraining-and-Burnout-in-Young
  52. https://worldathletics.org/about-iaaf/documents/technical
  53. https://worldathletics.org/records/all-time-toplists/sprints/100-metres/outdoor/men/senior
  54. https://worldathletics.org/records/season-top-lists
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