As January switch window signings go, a 78-year-old American monitor and area coach is unconventional. For Manchester United and Ruben Amorim, even when it wasn’t the pinnacle coach’s name, it really makes numerous sense. The appointment of Harry Marra, on a consultancy foundation for just a few weeks, is designed to enhance United individually and collectively at masking floor effectively and repeatedly.
Marra, who graduated from Syracuse College in 1974 with a grasp’s diploma in bodily schooling and train science, is greatest recognized for teaching USA decathlete Ashton Eaton to gold on the Olympics (London 2012, Rio 2016) and World Championships (Moscow 2013, Beijing in 2015, the place he additionally acquired the world file, since crushed). Eaton nonetheless holds the world decathlon greatest over 400 metres (45.00 seconds), and within the high 25 decathlon performances of all time, his 10.23s 100m ranks second.
Marra’s relationship with Eaton dated again to the early 2010s once they labored collectively on the College of Oregon, the place Marra additionally coached Brianne Theisen to NCAA titles and collegiate data. As a heptathlete, she went on to win an Olympic bronze (Rio 2016) and world silvers (Moscow 2013, Beijing 2015).
Marra additionally spent over 10 years working concurrently with the San Francisco Giants baseball group and as USA Observe & Discipline’s decathlon coach.
In 2018, Marra coached Indonesian sprinter Lalu Muhammad Zohri to gold on the World Athletics U20 Championships. With a private greatest right down to 10.03, Zohri is on the cusp of changing into solely the eleventh Asian man to interrupt the 10-second barrier within the 100m.
What’s this acquired to do with Manchester United? Quite a bit. It’s an indication of Marra’s teaching high quality that, over 40 years he has had success with groups, teams and people of various ages, backgrounds, beginning ranges and sources. If the critique is that his age makes him out of contact, think about the open-mindedness and flexibility he has wanted to work with high athletes and groups for longer than Amorim has been alive.

Marra with Eaton in 2016 (Andy Lyons/Getty Pictures)
Extra importantly, working extra and higher is one thing Amorim needs United to do. “If you wish to win the Premier League, it’s a must to run like mad canines,” he mentioned in December, earlier than a 3-2 defeat towards Nottingham Forest, his fifth match in cost. “If not, we aren’t going to do it (win), that’s clear. It’s unimaginable to win the Premier League and not using a group that, each second, runs again, runs ahead. Even with one of the best beginning XI, with out working, they won’t win something”.
The sports activities science-led revolution of the late 2000s catalysed a change of the Premier League into Europe’s most athletic league, and it’s nonetheless rising in depth. One study of Premier League games between 2006 and 2013 confirmed 30 and 35 per cent will increase in high-intensity and dash distances. Another paper found rises of 12 and 15 per cent in the same metrics from 2014-15 to 2018-19. Information from SkillCorner reveals the rise has continued. This season, high-intensity distance match averages are 16 per cent up on the 2018-19 marketing campaign. Dash frequencies have risen by a fifth and dash distance over 23 per cent.
“It was not me, it was the membership,” mentioned Amorim of the appointment of Marra. “We’re all the time attempting to convey skilled individuals to share information with the workers, to know the physique, to know how one can enhance our gamers. It was not me, it was not one thing new. He’s not there to teach the group, he’s there to teach the workers about all the things concerning the working, et cetera. It’s a easy factor that we’re used to doing to enhance as a membership.”
Amorim wanting to construct a group on depth and physicality just isn’t new. Tottenham Hotspur, Liverpool and Bournemouth all had or have identities underpinned by urgent and aggressive working. His predecessor, Erik ten Hag, needed United to be “one of the best transition group on this planet”. He additionally turned to specialist teaching, appointing Benni McCarthy as a striker coach earlier than Marcus Rashford produced his most prolific season in 2022-23 (30 targets in all competitions).
Importantly, any specialist sprinting coach just isn’t going to make gamers considerably quicker. Acceleration, energy and high velocity will be refined however not taught. These attributes owe a lot to a participant’s physiological predisposition. That’s shown by the career trajectory of elite sprinters, whose expertise is clear in childhood and earlier than deliberate coaching, and so they attain world-class or peak standing a lot sooner than different sports activities.
As a substitute, a specialist coach ought to assist determine and minimise points in mechanics that may result in damage. Final season, United had the most time-loss injuries in the league and struggled to call a constant again 4. Harry Maguire and Mason Mount, who had been injured a number of occasions, are examples of “downside instances” and “repeat rehabbers”, phrases utilized by Jonas Dodoo, a efficiency advisor with Brighton & Hove Albion and Newcastle United who specialises in motion and dash teaching and evaluation.
Dodoo, whose background in dash teaching got here in rugby after which athletics, first labored as a efficiency advisor in soccer in 2016 with Derby County. He cites Theo Walcott and Tariq Lamptey — two gamers with notable tempo — among the many gamers he has helped rehabilitate. He describes the teaching mannequin he makes use of as: “Brake, plant, separate. That’s what they want to have the ability to do.”

Marra teaching Eaton and Theisen in Eugene, Oregon in 2013 (Doug Pensinger/Getty Pictures)
“They want to have the ability to brake aggressively and effectively in order that they’ll plant successfully and separate from their opponents, and run quick,” says Dodoo. “You might want to be conditioned to create the kinds of forces wanted, but additionally want effectivity, and to do this repeatedly — 40, 60 occasions within the sport you might need to speed up, and the forces are much more tense in a physique in a deceleration.”
Fully altering a participant’s mechanics would take the sort of time, coaching and sources that soccer hardly ever presents, however there are nonetheless good points available when teaching sprinting. “You need to be sure that they’ll get into the positions and postures wanted to decelerate, speed up and to alter path effectively,” says Dodoo. “That’s the premise you begin (teaching) round. When it comes to dash capacity, you can also make very fast and efficient modifications to the primary three steps that be sure that they know create the forces in the suitable path.
“In case you can speed up very effectively in your first three steps and if you know the way to cease aggressively in your first three steps of deceleration, then that may have a elementary impact in your bodily qualities and efficiency.”
The character of soccer and its sport phases (with a lot settled possession, set items and 22 gamers on a 105m x 68m pitch) means players very rarely hit their actual top speeds in matches. It’s the motive, at PSV’s academy, their benchmark for first-team degree efficiency in a 30m dash check additionally features a threshold for how briskly gamers must cowl the primary 10m.
Quicker and extra environment friendly accelerations and decelerations purchase gamers time and house (or scale back it for opponents). “In case your gear one is admittedly aggressive, then really the remainder of it may be carried out scanning and getting ready for the following motion,” says Dodoo.
United’s academy — in Rashford, Alejandro Garnacho, Amad and Anthony Elanga (offered to Nottingham Forest in July 2023) — has developed a number of the greatest straight-line runners and accelerators within the division. “Elanga is the mannequin,” says Dodoo, who co-owns Speedworks Coaching, a dash teaching enterprise that developed a database of athletes “throughout soccer, NFL, elite and worldwide rugby. We’ve acquired 5,000 runs for 3,000 gamers. What we think about as being very environment friendly and efficient is what he (Elanga) produces in his working”.
Elanga once more. 😮💨 pic.twitter.com/aqk1TYLvBI
— Nottingham Forest (@NFFC) December 26, 2024
Within the first two months of this season, Rashford, Garnacho and Elanga all made the listing for the highest 10 highest speeds in a Premier League sport — as a result of gamers hardly ever hit high velocity, calling them the ‘quickest’ can be a misnomer. That Amad didn’t is likely to be due to his gait. He stands out for taking numerous brief steps with low heel raise (and has a uneven arm type harking back to fellow Ivorian and 100m sprinter Marie-Josee Ta Lou) whereas Garnacho takes huge strides.
That distinction in mechanics could clarify their distinction as dribblers too. As senior United gamers, Amad has accomplished 46.7 per cent of his Premier League dribbles, in comparison with simply 32.5 per cent for Garnacho. “He’s (Amad) nearer to the bottom and having a excessive stride charge means he could make changes in a short time,” says Dodoo.
Amad (22 years previous) and Garnacho (20) are two members of a comparatively younger United squad. Midfielders Toby Collyer (20), Manuel Ugarte (23), and Kobbie Mainoo (19), plus centre-back Leny Yoro (19) and striker Rasmus Hojlund (21) had been both taking part in academy soccer in England or have made strikes to United from different European leagues prior to now two seasons.
These contained in the membership really feel that the toughest a part of stepping as much as the senior, Premier League degree is the bodily calls for (greater than the technical/tactical ones) and subsequent damage dangers.
Dodoo says groups want “a sensible rotation system with these younger gamers. Particularly, the extra of a ahead and the extra of a velocity service provider that participant is, much more motive to have a way of preserving them loaded however not overloaded”.
Sprinting coaches should not new inside soccer. Former Crew GB sprinter Darren Campbell labored at MK Dons and with Andriy Shevchenko when he was at Chelsea. Equally, Leon Reid, another former international sprinter, has worked on the running technique of Brighton players. Three NFL sides — the Jacksonville Jaguars, Tennessee Titans and Houston Texans — have all employed ‘administrators of velocity improvement’, although there’s a extra pure match for a mechanics/sprinting coach there, given the NFL’s mix and 40-yard sprint.

Garnacho has demonstrated his dash capacity this season (Paul Ellis/AFP/Getty Pictures)
The Premier League is into its period of specialist coaches: hybrid coach-analysts, set-piece coaches and position-specific coaches. The return on funding of a coach who can hold gamers fitter (and probably make them transfer higher) has the potential to be big.
Internally, Amorim has been important of health ranges, and United’s high-intensity numbers have dropped off in comparison with final season.
Operating extra (and tougher) just isn’t routinely a very good factor, and requires the context of techniques, sport state, opposition type and high quality, however as Dodoo factors out, “the supervisor’s mannequin is actual excessive depth, and the gamers have to be conditioned for that. In case you get conditioned to that approach of coaching with one supervisor, the following supervisor bringing a extra intensive mannequin (means) the conditioning of the group must go up”.
It isn’t fairly the identical method that Ten Hag took when he had his players running many kilometres after an away defeat to Brentford in August 2023 (to indicate them how a lot they had been ‘outran’ by). Availability, although, is one of the best capacity, and United should enhance there if they’re to implement the type Amorim needs, not to mention flip their season round.

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(High photograph: Manchester United coaching this month; by Zohaib Alam/MUFC/Manchester United through Getty Pictures)