WHEN QUARTERBACK AARON Rodgers suffered a season-ending left Achilles damage on the primary drive of his New York Jets profession, the yearslong debate over taking part in surfaces started anew.
Earlier than the severity of Rodgers’ damage had been confirmed, requires pure grass fields rang out throughout the NFL. The grass vs. turf debate continued to take middle stage all through the 2023 season as star gamers suffered noncontact accidents.
MetLife Stadium, the positioning of Rodgers’ damage, had acquired a lot criticism within the seasons main as much as his Jets debut that new turf had been put in earlier than the 2023 offseason — to which Rodgers gave his approval.
Maybe greater than the floor composition itself, the dearth of consistency from one subject to the subsequent is commonly essentially the most irritating side of the talk for gamers. The NFL acknowledges that, as of now, there are doubtlessly too many various kinds of surfaces, each artificial and pure grass.
“In case you’re not going to mandate grass, then why aren’t all turf fields the very same turf so guys get used to taking part in on the identical turf all over the place?” San Francisco 49ers tight finish George Kittle requested.
“Each subject has a unique turf, so it is similar to you are taking part in on a unique floor. NBA guys do not play on totally different wooden. Hockey guys do not play on totally different ices on a regular basis … So, I simply want we performed on a floor that was comparable week in and week out.”
Whereas a number of research have been revealed evaluating damage charges on numerous artificial versus grass surfaces, to date there has not been a method of onsite testing of particular person subject surfaces via a biomechanical engineering lens.
Enter: the BEAST.
In the course of the 2023 season, the NFL and NFLPA launched a pilot program involving a cell machine that traveled to a number of stadiums to check numerous surfaces below a variety of situations, the primary such testing ever carried out. Moreover, 4 stadiums — MetLife in New Jersey, Ford Discipline in Detroit, Mercedes-Benz in Atlanta and AT&T Stadium in Dallas — had a cell unit housed at their amenities.
The aggregated 2023 information is being analyzed now. The NFL/NFLPA Engineering and Joint Discipline Surfaces Committees will meet to debate early findings this offseason, and people events will proceed the dialogue as information assortment continues. The plan is to formally current their analytics to the league and the gamers affiliation after one other 12 months of knowledge assortment, sooner if there’s a dramatic discovery worthy of quick consideration.
“In case you had fewer, as a substitute of 30 surfaces that each one play in a different way, you had two, or three, or 5 surfaces … [Players] are going to know what their our bodies, their joints and muscle tissues, may anticipate once they’re taking part on a floor,” stated Jeff Miller, NFL govt vp of communications, coverage and well being and security. “And subsequently they might in all probability be much less sad shifting from floor to floor.”
Whereas native variations, together with the setting, prohibit a single floor that shall be appropriate for all 30 NFL stadiums, the NFL and NFLPA hope the BEAST can present really helpful practices and higher standardization throughout the league.
“We need to set the security and efficiency aim,” stated Dr. Kristy Arbogast, a member of the joint NFL/NFLPA Engineering Committee who has labored with the NFLPA on damage prevention matters for the final decade, “after which maintain all fields, no matter they’re made from, to that focus on.”
THE BEAST (BIOMECHANICAL Elite Athlete Shoe-Turf Tester) was initially developed for the laboratory in 2008 by the NFL engineering consultants at Biocore. Utilizing samples of artificial surfaces from taking part in fields, scientists may research the properties of rotation and traction after affect — two forces an NFL athlete’s leg encounters — when the cleat contacts the bottom and engages with the sector floor.
“Traction is basically the stickiness or slipperiness of the floor,” Arbogast stated. “So if a participant goes to chop or pivot as they begin their route, as linemen attempt to dig in and stand up to opposing linemen, having the sector — and that interplay between their physique and the floor — be regular and repeatable however not seize an excessive amount of is basically what traction means.”
By making a cleat mannequin based mostly on the attributes of a mean NFL participant, scientists have been in a position to acquire invaluable insights into the connection between the cleat and the floor, however there have been limitations to the lab setting. By solely testing a small floor pattern, it was not potential to actually extrapolate outcomes to all areas of a taking part in subject. The dimensions of the primary technology BEAST and the manpower required to function it didn’t permit for onsite testing.
Enter the cell BEAST. In 2020, Dr. Philipe Aldahir, a senior useful resource engineer, joined the Biocore workforce to work on the second technology of the machine with the intent of bringing the lab to the sector. By automating a number of operational parts below the housing of the unit, the latest model of the BEAST is each cell and simpler for a person to function. It could possibly journey to a number of places on the sector, encompassing the realm from one finish zone to the opposite and from sideline to sideline.
The sphere, visually represented on the management panel, is split right into a 60-section grid. As information is collected throughout testing, it travels to the cloud the place it might then be analyzed and transformed to a visible show. The show instantly permits the viewer to see the complete illustration of the sector floor and the way every part throughout the grid is performing.
Taking this information is one leaping off level however, as NFL Discipline Director Nick Pappas is fast to level out, gamers are in the end the tip customers and their suggestions is vital to the method of finding out floor kind and composition.
“We need to present surfaces that carry out finest for our gamers,” Pappas stated. “We would like them to have the ability to exit and play and execute and be capable to simply give attention to soccer.”
RETIRED NFL OFFENSIVE lineman Mark Schlereth, who endured greater than two dozen surgical procedures throughout his taking part in profession, recalled how tight and swollen his decrease extremity joints — hips, knees, ankles and toes — would really feel after taking part in on AstroTurf, the primary artificial subject floor, usually requiring additional remedy the next week to get better in time for the subsequent sport.
Schlereth referenced one sport particularly in opposition to the Detroit Lions within the Pontiac Silverdome, the place the additional play in extra time left him “hardly in a position to stroll till the next Thursday.”
He believes the “grippiness” or stickiness of that floor not solely left gamers exceedingly sore, it additionally hindered efficiency.
“As an offensive lineman, it’s essential slide throughout the grass,” Schlereth stated. “The largest subject grew to become which sneakers to put on every week relying on which stadium we have been taking part in in.”
He stated gamers would hold a number of pairs of “journey” turf sneakers with a pair personalized particularly to match to every subject floor. The customization consisted of grinding their cleats right down to the nubs so they would not stick.
Whereas the latest damage information from the 2023 season exhibits a negligible distinction in damage price on grass vs. artificial turf, gamers usually nonetheless report feeling worse when taking part in on an artificial floor.
In October, Kittle expressed his dissatisfaction with the sector floor at US Financial institution Stadium after banging his knee and hobbling off the sector throughout their sport in opposition to the Minnesota Vikings.
“It’s extremely springy however it’s principally cement,” Kittle stated. “If you slam on it, it actually stinks.”
There are variations between all floor sorts — together with pure grass — that will end in a unique participant expertise from one week to the subsequent. Parts resembling pile peak, sew gauge and infill composition for artificial surfaces and grass kind, mild situations and drainage necessities for pure surfaces are however a couple of of the variables that may contribute to variations in how a subject in the end presents itself to a participant.
And situations usually are not stagnant throughout the season.
Climate, subject upkeep and stadium use for non-NFL occasions can alter surfaces and alter the texture for taking part in soccer dramatically.
Miller stated the pilot research with the BEAST, on the suggestion of the NFLPA, included athlete surveys taken after each sport in 2023.
“After we return and measure the surfaces with the instruments that we now have, we need to see if we are able to correlate these emotions with some goal metrics … In the identical means that we need to correlate accidents with some goal metrics from the instruments we use to measure them,” Miller stated.
TO DATE, THERE is not any information establishing a relationship between how a taking part in floor feels to NFL gamers and the damage threat related to that exact floor. It does not imply there’s zero affect; it merely signifies there’s yet one more data-driven query that continues to be unanswered.
Because the Minnesota Vikings ready to exchange their slit-film artificial turf this offseason — the Cincinnati Bengals additionally not too long ago introduced they’ll do the identical — the Vikings paired their well being and security leaders with their subject administration and operations leaders to information the method. Based on Tyler Williams, Vikings vp of participant well being and efficiency, the group sought out the latest obtainable science from Biocore, conferred with NFL/NFLPA engineers and interviewed turf specialists and distributors in an effort to make use of the most recent analysis to gas their decision-making.
“We tried to pair what the science says with scientific software to get the most secure floor with the perfect efficiency outcomes for our gamers,” Williams stated.
However that wasn’t all.
Past the science, the Vikings needed their gamers to be comfy with the ultimate turf choice. Members of the gamers’ management council weighed in on options that have been vital to gamers and that subjective experience was included as they consolidated their choices.
The Vikings in the end settled on a single monofilament subject with 2½ -inch pile peak manufactured by ActGlobal.
“The aim was to get a turf that performs as near pure grass as potential,” Williams stated.
Final season was the primary 12 months of data-collection in what is meant to be a multi-year research. The plan for subsequent season is to include testing on all pure grass surfaces whereas concurrently rising the frequency of testing in any respect NFL stadiums. The brand new surfaces for the Vikings and Bengals will add comparability information to the combo.
As extra of the BEAST models are constructed, extra shall be completely established in numerous membership places to allow in-season monitoring of floor situations. The plan consists of ultimately testing worldwide subject surfaces, as properly.
The NFL, with help from the NFLPA, additionally launched a HealthTECH Problem. It is a crowd-sourced invitation for submissions “to speed up improvements that may assist make taking part in surfaces extra constant and safer for gamers.” Earlier crowdsourcing initiatives associated to well being and security, resembling helmet improvements, have yielded success tales, so the prospect of getting concepts and insights from inside and outdoors the turf science world is interesting. Entries have been submitted and the winner or winners shall be introduced in late Could.
Whereas there are extra questions than solutions at this stage in terms of ultimate taking part in surfaces, there’s confidence science will in the end lead all events to frequent floor.
It could not occur unexpectedly.
“We’ll have insights alongside the best way that may present incremental steps, ” Miller stated. “And over time, not essentially one 12 months however over a sequence of years, we’ll get to a significantly better expertise for the gamers in terms of efficiency, in addition to damage, in addition to the power for any membership to have the ability to perceive what it’s that they are offering.”
ESPN San Francisco 49ers reporter Nick Wagoner contributed to this report.
