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G. Gregory Haff @Doc_Haff

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

Joined July 2012
  • Tweets 5,961
  • Following 277
  • Followers 15,984
453 Photos and videos
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G. Gregory Haff retweeted
Christopher Latella@clatella1
May 26
@Doc_Haff #HigherEducation #StrengthAndConditioning #SportsPerformance #ExerciseScience #HighPerformanceSport #SportsScienceEducation
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Rob Newton
@ProfRobNewton
May 22
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 - ecu.edu.au/degrees/courses/g… Masters - ecu.edu.au/degrees/courses/m… If you are interested in enrolling and have any questions, please email the Course Coordinator, Dr Chris Latella - c.latella@ecu.edu.au @Doc_Haff
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NotebookLM
@NotebookLM
May 5
Source organization has officially ramped to 💯% of users!
NotebookLM
@NotebookLM
Apr 24
Mo sources mo problems? Not anymore: Rolling out now, NotebookLM can auto-label & categorize sources (when you have 5 ), so you can spend less time scrolling and more time thinking/learning/philosophizing, etc. Rename, reorganize, & personalize (emojis!) to your ❤️'s content.
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Jo Clubb@JoClubbSportSci
Apr 21
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.
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Beyond the Full Lifts: Why Weightlifting Derivatives Are the Ultimate Training Tool tinyurl.com/mja8c4wz #StrengthAndConditioning #Weightlifting #OlympicWeightlifting #ForceVelocity #SandC #StrengthCoach #SportsScience #AthleticDevelopment #Periodisation
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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. tinyurl.com/mrybmj59 #StrengthScience #StrengthAndConditioning #PowerDevelopment #NSCA #ASCA #UKSCA
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In this week's newsletter I explore Accentuated Eccentric Loading, providing loading tables, figures, and block-by-block programming guidance tinyurl.com/6d9jx8rp #StrengthCoach #Training #SportScience #AEL #EccentricTraining #StrengthAndConditioning
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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 🧵 open.substack.com/pub/ggrego…
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Jo Clubb@JoClubbSportSci
Mar 20
Replying to @NSCA @Doc_Haff
The 5th edition is now available to pre-order on the NSCA's website: nsca.com/certification/cscs/…

Essentials of Strength Training and Conditioning, 5th Edition | CSCS® Exam Prep

Get the Essentials of Strength Training and Conditioning, Fifth Edition — a trusted resource for strength and conditioning professionals and CSCS® exam prep.

nsca.com
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Jo Clubb@JoClubbSportSci
Mar 14
Man and Machine: A Hybrid Approach to Athlete Load Management globalperformanceinsights.co…
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Periodisation Isn't Programming. It Isn't a Calendar. It's a Deliberate Practice Framework open.substack.com/pub/ggrego… #strengthtraining #training #periodisation #deliberatepractice #NSCA #ASCA #UKSCA
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Microdosing Your Strength Training open.substack.com/pub/ggrego…

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I just wrote my first note on Substack substack.com/profile/2711614…

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I just started a Substack! You can subscribe to it here ggregoryhaff.substack.com/?r…
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🚨 Barbell acceleration ≠ technique quality 🚨 📌 Take-home: barbell kinematics are informative — but not enough on their own to judge technique. 📖 Open-access paper 🔗 tinyurl.com/5n9aahm5 #Weightlifting #StrengthAndConditioning #SportsScience
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JayDawes@DrJayDawes
Jan 1
Great deal for First Responders and their Families! @OSUTacFAN
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Jo Clubb@JoClubbSportSci
22 Dec 2025
In 2026, getting value from AI may be less about how many tools you use and more about the quality of the questions you ask.
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🔥 NEW S&C DATA! 80% of professionals use Cluster Sets How they'r programmed: Power: LOW Reps (≤5) LONG Rest Hypertrophy: HIGH Reps (9–12) SHORT Rest Read the study! tinyurl.com/yf2dwvfk #ClusterSets #StrengthTraining #SCA #PowerDevelopment
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Jo Clubb@JoClubbSportSci
18 Nov 2025
AI and prompt engineering share similarities with the research process. It starts with asking a clear question, testing, and refining based on what you learn.
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