Greg Hollins

Athletic Development Coach @IrishRugby @LeinsterRugby | Sports Scientist | Coaching, Data & Performance

[Greg Hollins @GregMHollins]

Just how we drew it up…

Officially a girl dad.

Anna Grace Hollins 🤍

[Greg Hollins @GregMHollins]

Back to coaching after a summer break.

Reminded how much I'd missed it. Not the sessions, the people.

You get a feel for a group: when to push, when to back off.

Whilst GPS, monitoring, AI etc all make us more efficient.

Human connection is still at the core of what we do

[Eamonn Flanagan @EamonnFlanagan]

The Countermovement Jump and the Single Leg Countermovement jump represent very different strength qualities.

The SL-CMJ really isn't just a "single leg" version of the same test.

Some data to illustrate this 👇👇

[Greg Hollins @GregMHollins]

The way athletes move determines how different tissues and structures support that loading.

Understanding the link between movement characteristics, tissue demand & current capacity leaves clues as to the gaps we need to fill.

Valuable long term study in rugby athletes ⤵️

[James Wild @wildy_jj]

For anyone who may be interested, the following link gives free access to this new publication in @_JSAMS for 50 days!

https://t.co/WJUyDj8uoC

[Greg Hollins @GregMHollins]

Innovation is always good thing, and I’m intrigued to find out more but I’m not sure how a linear encoder can be a “virtual force plate”.

By this do you mean you offer RSI & RFD metrics? Or is there more to this? @VitruveFit

[Vitruve @VitruveFit]

For the past few weeks, there has been a lot of speculation about what 'Force' was bringing to Vitruve. Many of you guessed we were building a Force Plate.

You were half right.

Today, we officially unveil the Vitruve Force, the world’s first 3-in-1 Performance Lab that fits in the palm of your hand.

- Elite VBT: Tracking every micro-meter of velocity with high-frequency precision.

- Virtual Force Plate: Clip it to the waist for instant RSI and RFD—no plates required.

- Smart Jump Mat: Professional-grade jump testing built into your lifting workflow.

And the best part? We’ve kept the price exactly the same.

[Iñigo San Millán @doctorinigo]

"Lactate was at the scene of the crime but was not the criminal. It was actually trying to help"

Lactate: The Most Misunderstood Molecule in Biology👇
https://t.co/3skDRDEuqw

[Greg Hollins @GregMHollins]

Unsurprisingly the new facilities at Augusta look incredible but…

Who’s going to be the first to throw a med ball through one of these prestigious walls?

In a rotationally dominant sport, it’s going to happen at some point! 😂

[Joe Pompliano @JoePompliano]

Augusta National's new players services facility, like everything else on the property, is beautiful.

The building has underground parking for players, a fitness center and physio room, locker rooms, and multiple dining rooms for players and their families.

[Greg Hollins @GregMHollins]

What you say matters ⬇️

Consistent & intentional cuing is important in training scenarios but even more so standardisation in testing / profiling

[Coach Wayland | Performance Expert | Craftsman @WSWayland]

What you say matters; counter movement jump cueing.

“jump as high as possible” (CMJ-H), “jump as fast as possible” (CMJ-F), and “jump to the best of your ability” (CMJ-N)

The CMJ-F condition elicits an increase in force production, whereas CMJ-H and CMJ-N elicit an elongation of time.

https://t.co/4uUHVafRcv

[Greg Hollins @GregMHollins]

Definitely worth noting the level / training age of these athletes, D1 College🏈. Probably means a high level of general strength & power, making analysis like this more valuable & applicable.

FVP being more accessible is great, but likely not a decision tool for 99% of athletes

[Greg Hollins @GregMHollins]

⬇️Really interesting paper into spatiotemporal & joint kinematic variables of sprint acceleration performance in team sport athletes of various sizes.

🔑Whilst Pmax is king, bigger bodies require more absolute force.

🔑Better shapes = better expression of F0 & Pmax = faster🏃‍♂️

[Cameron Josse, M.S. @CoachJosse]

In our recent paper, Pmax had largest relationship w/ 10m sprint performance & F0 appeared more important w/ ⬆️ body mass. Spatiotemporal & joint kinematic variables most associated w/ Pmax presented in images below. Pmax may serve as an appropriate KPI for initial acceleration.

[Greg Hollins @GregMHollins]

🔑 Performance is multifactorial, but linear acceleration is a KPI in most. Applicability & transfer yes, but raw physical qualities👍

🔑Pmax is a relative metric, like it or not physics applies in sporting contexts. Changes in body mass & body comp impact physical performance.

[Greg Hollins @GregMHollins]

https://t.co/yA2UEA3EbG

As with any injury there's a risk, it will never be known what impact the previous injury had on the outcome. It also doesn't change the decision.

The elites can do special things & you try to tell those characters they can't give it a shot...

[Officer Lew @officer_Lew]

BREAKING🚨: U.S. skiing veteran Lindsey Vonn crashes at the Winter Olympics; medevac’d by helicopter

[Greg Hollins @GregMHollins]

The reality is the elites are elite due to a combination of many factors, meaning they can often find a way.

Downhill skiing 7 days post ACL rupture would be higher on the levels of disruption to normal, but for big events elite athletes can do some incredible things

[The Olympic Games™ @Olympics]

Welcome to #MilanoCortina2026, @LindseyVonn 🙌

[Greg Hollins @GregMHollins]

📝 Really valuable paper highlighting the shifting demands of football. A trend which definitely applies to other sports.

🏃‍♂️Increasing physical demands
🗓️More demanding schedules

Balancing stress & response has never been a more vital part of our roles in performance sport

[Tom Allen @tallen_5]

📊 New research in @BJSM_BMJ

🔓Open Access
https://t.co/CqLBf7XowR

10-year analysis of running load & fixture congestion in the EPL (2015–2025) shows the game is faster, more intense and more congested than ever.

Here’s what to take from it ⬇️

[Greg Hollins @GregMHollins]

A thought provoking thread about the margins of elite sport & the challenges those involved go through.

Many of which others will never know of, let alone understand

[Steve Magness @stevemagness]

Sport is a brutal, beautiful game of inches.

This weekend was a masterclass in this very concept.

In the World Series, inches on a slide kept the Toronto Blue Jays from capturing the title.

In the NYC Marathon, a slight lean, two tenths of a second, separated 1st from 2nd.

It's the magic and soul-crushing cost of being in the arena:

[Greg Hollins @GregMHollins]

Getting everyone on the same page, understanding intensity is such an important part of the performance puzzle.

Multiple different models can explain why conditioning is often overlooked & misunderstood across the field.

A base level of terminology alignment ⬇️ is a good start

[Fernando Novella @F_Novella]

Physical Activity and Exercise Intensity Terminology: A Joint American College of Sports Medicine (ACSM) Expert Statement and Exercise and Sport Science Australia (ESSA) Consensus Statement
https://t.co/070jr6ZDxN
DOI: 10.1249/MSS.0000000000003795

[Greg Hollins @GregMHollins]

@gerdy_mac That said I do feel referring to the mechanical loading as % match demand has utility, until it becomes the 🎯

[Greg Hollins @GregMHollins]

@gerdy_mac Hard to get both to the right level in a single input top up scenario.

For me, get your mechanical loading close to where you'd want it - track the physiological loading from that. Then top up the physiological loading off feet when the schedule fits it.

Often we chase both🤷‍♂️