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Damian Harper, PhD
@DHMov
Human Braking Performance | Founder @BrakingPerform | PhD Deceleration | Lecturer @Uni_Lancashire | Performance Consultant | Sport Scientist FCASES | S&C Coach
Website ➡️
humanbrakingperformance.com
Joined January 2012
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  • user avatar
    Damian Harper, PhD
    @DHMov
    Oct 9, 2020
    Post-match fatigue is LOWER in team sport players with: ⬆️ High-intensity running ability 🏃‍♂️🏃‍♀️ ⬆️ Lower body strength 🏋️🏋️‍♂️ Despite HIGHER internal and external match loads! 📌 pubmed.ncbi.nlm.nih.gov/24594214/ 📌 pubmed.ncbi.nlm.nih.gov/26158195/
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    Influence of physical qualities on post-match fatigue in rugby league players - PubMed
    From pubmed.ncbi.nlm.nih.gov
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    Damian Harper, PhD
    @DHMov
    May 11, 2022
    Comparison of quadriceps and hamstrings EMG activity during: FAST DECEL vs CUT vs 40cm LAND 1⃣"Quadriceps are undergoing high-speed ECCENTRIC activation" 2⃣"Quadriceps activity exceeds maximal ISOMETRIC contraction" 3⃣ "Hamstring activation much lower than quadriceps" #ACL
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    Damian Harper, PhD
    @DHMov
    May 30, 2022
    Great to see our latest paper now published: 🆕Biomechanical and neuromuscular performance requirements of horizontal deceleration: A review with implications for multi-directional sports ⚽️🏈🏀 In @SportsMedicineJ with such a great team. 🔓HERE link.springer.com/epdf/10.1007/s…
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    Damian Harper, PhD
    @DHMov
    Dec 22, 2021
    Change of direction demands of @premierleague soccer players... 2007--2016--2021⚽️🏴󠁧󠁢󠁥󠁮󠁧󠁿📹
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    Damian Harper, PhD
    @DHMov
    Aug 16, 2022
    33-66% of ACL injuries in soccer ⚽️ occur in DEFENSIVE pressing!! 👀 Visual distraction a key situational pattern, but the physical ability to decelerate rapidly from high speeds also critical 👇🏻
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    Damian Harper, PhD
    @DHMov
    Nov 16, 2024
    🚨 Just published in @JSportsSci … FORCES experienced across different levels of the musculoskeletal system during horizontal DECELERATIONS Delighted to contribute to this novel study led by @jasper_verheul with @mrobbo18 Open access ➡️ tandfonline.com/doi/epdf/10.10…
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    Damian Harper, PhD
    @DHMov
    Sep 24, 2024
    So, unfortunately we saw another high profile ACL injury this last week with Rodri at @ManCity ⚽️ 🏴󠁧󠁢󠁥󠁮󠁧󠁿 📍DECELERATiNG from high speed 📍BRAKiNG with single limb support 📍External force from defender 📍20 mins into 1st half NOTE: Forces during these BRAKING steps are huge ‼️👇🏻
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    Damian Harper, PhD
    @DHMov
    Aug 11, 2023
    Deceleration training can provide dual-benefits for... ✔️ Sports performance ✔️ Injury-risk reduction Summary from our DECELERATION 'VACCINE' paper... 💉 #deceleration #braking #vaccine #ACL
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    Damian Harper, PhD
    @DHMov
    Mar 5, 2021
    Long journey, but pleased to say I passed my PhD today. Many thanks to examiners @j_d_hughes @MarkWaldron13 @Rdtaylor_16 Special thanks to my supervisor @simplysportssci who guided me throughout, DOS @DCGreyMattersUK @carling_chris @DrDavid_Rhodes & all those who contributed 🙏
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    Damian Harper, PhD
    @DHMov
    Feb 23, 2023
    If you improve your horizontal deceleration (braking) performance capability you will likely have… ➡️ Better change of direction (COD) performance Why? 📌 You can use greater % of max speed/sustain higher speeds prior to COD 📌 You require less distance to stop
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    Damian Harper, PhD
    @DHMov
    Sep 10, 2024
    External forces when DECELERATING can be huge compared to ACCELERATING❗️ What about comparison of internal joint forces ❓ DECELERATION (~5m Reactive) = 📌Hip Extensor = 164% Greater 📌Knee Extensor = 39% Greater ACCELERATION = 📌 Ankle Plantar Flexor = 63% Greater
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    Damian Harper, PhD
    @DHMov
    Dec 12, 2022
    Some potential performance implications around developing your athletes horizontal deceleration/braking performance capability... 🏈⚽️🏉🏑🏀 DECELERATION RESERVE
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    Damian Harper, PhD
    @DHMov
    Dec 22, 2020
    The role of eccentric/isometric muscle contractions in providing a PROTECTIVE adaptation against future high-force eccentric muscle actions..... journals.lww.com/acsm-essr/Full…
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    Damian Harper, PhD
    @DHMov
    Aug 1, 2022
    Delighted to officially launch my new website: humanbrakingperformance.com It will cover all things connected to DECELERATION and BRAKING for sports performance and injury-risk reduction. Thanks to all those who have helped to make this happen along the way!
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