A 10-year Evaluation of the NFL Combine. Do Combine Results Correlate with Career Longevity for NFL Offensive players?

Asprey, Walker; Foley, Brittany M.; Makovicka, Justin L.; Dulle, Donald L.; Williams, Ken; Ginn, Jessica; Chhabra, Anikar

doi:10.7243/2055-2386-7-8

Cited by 3 publications

(9 citation statements)

References 10 publications

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“…Published online: 2021-08-10 reer longevity and how a player's draft status may be negatively affected [4][5][6][7][8].…”

Section: E59mentioning

confidence: 99%

“…For example, a study examining the combine from 1987 to 2000 showed players receiving a high orthopedic grade having a mean career length of 42 games, players with a low orthopedic grade playing 34 games, and players with a failed orthopedic grade playing 19 games 4 . Other studies have shown how injury prior to the combine, among other characteristics, can help estimate career longevity and how a player’s draft status may be negatively affected 4 5 6 7 8 .…”

Section: Introductionmentioning

confidence: 99%

“…However, our study aims to determine the relationship between combine physical testing and drill performance and career longevity. A study recently established the relationship between combine physical performance and career longevity for offensive NFL players, but information regarding defensive players is scarce 7 . To our knowledge, our study is the first to perform an in-depth analysis of original and normalized combine drill performance and career longevity for defensive NFL players.…”

Section: Introductionmentioning

confidence: 99%

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Can NFL Combine Results be Used to Estimate NFL Defensive Players Longevity?

Pollock

Doan

Asprey

et al. 2021

Sports Med Int Open

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The National Football League Scouting Combine is an annual event held to evaluate football players. The results of the combine are used to identify talent and player potential. Our study aims to examine the relationship between combine drill performance (e.g., speed, power, agility, explosiveness) and career longevity. We performed a retrospective review of The National Football League combine test results for all defensive players from 2005–2015 to determine the association of each player’s combine test results with career longevity. The position that had the most significant associations for 1-year status was linebackers, with weight, 10-yard dash, 20-yard dash, 40-yard dash, broad jump, 3-cone drill, and shuttle being significantly associated with 1-year roster status. The position that had the most significant associations for 5-year status was cornerbacks, with weight, 10-yard dash, 20-yard dash, 40-yard dash, 3-cone drill, and shuttle being significantly associated with 1-year roster status. The least number of significant associations was found for safeties, with no drill being associated with 1-year roster status and only height and shuttle time significantly associated with 5-year career longevity. Our study demonstrates the utility of the combine results to help estimate the career longevity of NFL defensive players.

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“…Published online: 2021-08-10 reer longevity and how a player's draft status may be negatively affected [4][5][6][7][8].…”

Section: E59mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Can NFL Combine Results be Used to Estimate NFL Defensive Players Longevity?

Pollock

Doan

Asprey

et al. 2021

Sports Med Int Open

Self Cite

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“…39 , 42 , 46 The Lisfranc ligaments are composed of dorsal, plantar, and interosseous components in order of increasing strength based on previous biomechanical models. 4 , 15 , 35 , 46 …”

mentioning

confidence: 99%

“… 41 , 46 These ligamentous ruptures may present subtly without subluxation, dislocation, or fracture but will include pain, swelling, and tenderness over the area and are often misdiagnosed as a “foot sprain.” If left untreated, the ligamentous injury can lead to increased pain, instability, osteoarthritis, and morbidity. 4 , 18 , 46 Furthermore, younger patients and athletes, eager to return to physical activity, may have prolonged periods of disability even with less severe ligamentous injuries. 11 …”

mentioning

confidence: 99%

Biomechanical Comparison of Fiber Tape Device Versus Transarticular Screws for Ligamentous Lisfranc Injury in a Cadaveric Model

et al. 2022

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Background: The preferred method of fixation and surgical treatment for ligamentous Lisfranc injuries is controversial. Transarticular screws, bridge plating, fusion, and flexible fixation have been described, yet none have demonstrated superiority. Furthermore, screw fixation and plating often require secondary surgery to remove implants, leading surgeons to seek alternative fixation methods. Purpose: To compare transarticular screws and a fiber tape construct under a spectrum of biomechanical loads by evaluating the diastasis at 3 joints in the Lisfranc complex. Study Design: Controlled laboratory study. Methods: Eight matched pairs of fresh, previously frozen lower extremity cadaveric specimens were fixed with either 2 cannulated transarticular crossed screws or a fiber tape construct with a supplemental intercuneiform limb. The diastasis between bones was measured at 3 midfoot joints in the Lisfranc complex: the Lisfranc articulation, the second tarsometatarsal joint, and the intercuneiform joint. Measurements were obtained for the preinjured, injured, and fixation conditions under static loading at 50% donor body weight. Specimens then underwent cyclic loading performed at 1 Hz and 100 cycles, based on 100-N stepwise increases in ground-reaction force from 100 to 2000 N, to simulate postoperative loading from the partial weightbearing stage to high-energy activities. Failure of fixation was defined as diastasis ≥2 mm at the Lisfranc articulation (second metatarsal–medial cuneiform joint). Results: There were no significant differences in diastasis detected at the Lisfranc articulation or the intercuneiform joint throughout all loading cycles between groups. All specimens endured loading up to 50% body weight + 1400 N. Up to and including this stage, there were 2 failures in the cannulated transarticular crossed-screw group and none in the fiber tape group. Conclusion: The fiber tape construct with a supplemental intercuneiform limb, which does not require later removal, may provide comparable biomechanical stability to cannulated transarticular crossed screws, even at higher loads. Clinical Relevance: Ligamentous Lisfranc injuries are common among athletes. Therefore, biomechanical evaluations are necessary to determine stable constructs that can limit the time to return to play. This study compares the biomechanical stability of 2 methods of fixation for ligamentous injury through a wide spectrum of loading, including those experienced by athletes.

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Momentum, Rather Than Velocity, Is a More Effective Measure of Improvements in Division IA Football Player Performance

Mann

Mayhew

Santos

et al. 2022

Journal of Strength and Conditioning Research

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Mann, JB, Mayhew, JL, Dos Santos, ML, Dawes, JJ, and Signorile, JF. Momentum, rather than velocity, is a more effective measure of improvements in Division IA football player performance. J Strength Cond Res 36(2): 551-557, 2022-Speed, or the time to complete straight runs or agility drills, is commonly used to assess performance in collegiate American football players. However, it is common for players' speeds to plateau by the second year of eligibility, whereas their body masses continue to increase. The purpose of this study was to track change in speed, body mass, and momentum (body mass • velocity), across Division 1 football players' 4-year careers (n 5 512). Complete data were derived for the 40-yd sprint (n 5 82), the proagility shuttle (n 5 73), and the L drill (n 5 73) from the same NCAA Division 1 team over a 15-year period. Significant changes were seen for velocity between year 1 and the next 3 playing years (p , 0.05), with no differences between years 2 and 4, whereas body mass increased significantly across all playing years (p , 0.05). Further momentum increased across all years for all tests (p , 0.0001). These results indicate the importance of including changes in body mass when evaluating performances during sprints and change of direction drills. Our results also suggest that using sprint or agility drill times to evaluate playing potential across football players' collegiate careers may be ineffective and can provide players with a false and disheartening picture of their improvements across their careers. Momentum, which incorporates training-induced increases in both speed and body mass, would be a more relevant and supportive measure of players' improvements. In addition, the simple computation of this variable, using existing speed and body mass data, may be an important addition to the National Football League combine as a measure of playing potential in the professional game.

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A 10-year Evaluation of the NFL Combine. Do Combine Results Correlate with Career Longevity for NFL Offensive players?

Cited by 3 publications

References 10 publications

Can NFL Combine Results be Used to Estimate NFL Defensive Players Longevity?

Can NFL Combine Results be Used to Estimate NFL Defensive Players Longevity?

Biomechanical Comparison of Fiber Tape Device Versus Transarticular Screws for Ligamentous Lisfranc Injury in a Cadaveric Model

Momentum, Rather Than Velocity, Is a More Effective Measure of Improvements in Division IA Football Player Performance

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