G. Gregory Haff

Strength Scientist, Researcher, Professor, Strength and Conditioning Coach, Weightlifting Coach, Weightlifter, and Track Cycling Fan.

[Claude @claudeai]

Claude Academy is now live.

Whether you're figuring out what AI is or already using Claude every day, there's a path that meets you where you are. The courses and tutorials are free and open to anyone at https://t.co/WRiSRAvK6l

[G. Gregory Haff @Doc_Haff]

Squat Depth and Hypertrophy: Not More Muscle, Different Muscle? https://t.co/9EskQ0LdxQ

[G. Gregory Haff @Doc_Haff]

@JoClubbSportSci Great stuff @JoClubbSportSci

[G. Gregory Haff @Doc_Haff]

@JoClubbSportSci Correct positioning is key. The other consideration is how you determine force onset

[Christopher Latella @clatella1]

👉 Start your Edith Cowan University #StrengthAndConditioning studies in Semester 2, 2026 and you may be eligible for Commonwealth support towards your fees.
👉Visit the website, or email the course coordinator, Dr Chris Latella: [email protected] https://t.co/z8woKqOkfZ

[Christopher Latella @clatella1]

@Doc_Haff #HigherEducation #StrengthAndConditioning #SportsPerformance #ExerciseScience #HighPerformanceSport
#SportsScienceEducation

[Rob Newton @ProfRobNewton]

It is with pleasure that we share with you that our Graduate Certificate and Master of Exercise Science (Strength and Conditioning) programs will be Australian Government Commonwealth supported for students commencing in Semester 2, 2026. For more details please click on the links.

Graduate Certificate - https://t.co/soaCgimfTr

Masters - https://t.co/CE4wbYMlYH

If you are interested in enrolling and have any questions, please email the Course Coordinator, Dr Chris Latella - [email protected]

@Doc_Haff

[Gemini Notebook @Gemini_Notebook]

Source organization has officially ramped to 💯% of users!

[G. Gregory Haff @Doc_Haff]

@JoClubbSportSci Or is it signal-noise related to the collection device 🤔

[Jo Clubb @JoClubbSportSci]

When presenting, knowing your content sounds obvious, but it’s often where we fall short.

It’s easy to spend time perfecting PowerPoint slides while overlooking the most important part: what you’re actually going to say.

[G. Gregory Haff @Doc_Haff]

Beyond the Full Lifts: Why Weightlifting Derivatives Are the Ultimate Training Tool

https://t.co/NxyTCY9zn1

#StrengthAndConditioning #Weightlifting #OlympicWeightlifting #ForceVelocity #SandC #StrengthCoach #SportsScience #AthleticDevelopment #Periodisation

[G. Gregory Haff @Doc_Haff]

The French Contrast Method is a potentiation management strategy — and that distinction changes everything about who should use it, when, and why most implementations fail. https://t.co/A7vGMyMJFX
#StrengthScience #StrengthAndConditioning #PowerDevelopment #NSCA #ASCA #UKSCA

[G. Gregory Haff @Doc_Haff]

In this week's newsletter I explore Accentuated Eccentric Loading, providing loading tables, figures, and block-by-block programming guidance

https://t.co/rsWhKjkMst
#StrengthCoach #Training #SportScience #AEL #EccentricTraining #StrengthAndConditioning

[G. Gregory Haff @Doc_Haff]

@spikesonly @Scott_Damman While the 2023 paper is a bit older, it still is a composite of the available research. But there is also a newer paper by Cabarkapa that says the same thing: https://t.co/hnHLYFv6fB. . Trane et al. (2025 & ahead) show the slope of the LVP shifts but 1RM doesn't

[G. Gregory Haff @Doc_Haff]

@Wang92888 @JoClubbSportSci @NSCA Several new chapters and lots of updates

[G. Gregory Haff @Doc_Haff]

Your velocity device is telling you your athlete got stronger.
It’s probably wrong.
Here’s what the data actually say about velocity-based 1RM estimation 🧵
https://t.co/9XaS9KADOS

[Jo Clubb @JoClubbSportSci]

@NSCA @Doc_Haff The 5th edition is now available to pre-order on the NSCA's website: https://t.co/pCD7JgAN0i

[Jo Clubb @JoClubbSportSci]

Man and Machine: A Hybrid Approach to Athlete Load Management

https://t.co/6cakw8aYng