Bas Van Hooren
@BasVanHooren
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Strength & conditioning specialist | Athlete (28.41 10km) | Sport scientist | PhD Follow for info on training, biomechanics, motorlearning, running, injuries.
Maastricht, The Netherlands
Joined May 2016
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Pinned Tweet
New FREE paper in which we compare
#hamstring
fascicle behavior and muscle forces between the Nordic hamstring exercise, Roman chair and deadlift
More info, images & videos in thread ⬇️
@kenneth_meijer
@BeBiomech
@SamVanRossom
@NMS_UM
@HumanMoveSci_UM
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Now officially published: Single-Leg Roman Chair Hold Is More Effective Than the Nordic Hamstring Curl in Improving Hamstring Strength-Endurance
More info in thread⬇️
Full-text
Free full-text request
#hamstrings
#injury
#training
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Nice new method to convert OpenSim musculoskeletal models into a skinned human and also visualize muscle activity by Schleicher et al.
Code freely available
#opensim
#modelling
#running
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Accepted today: paper in which we argue that there is no eccentric, but an isometric hamstring action during running. Part II comming soon.
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New review: Is treadmill running biomechanically comparable to overground running?
Answer: mostly yes as shown in image (summary of diff. between
#treadmill
&
#overground
#running
), but it depends on various aspects. More info in thread⬇️
Free full-text
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Do we need to perform a cool-down after exercise? In a new Open Acces review for
@SportsMedicineJ
we discuss the effects on performance, injury, adaptation and much more.
Blogpost:
Link to (free) paper:
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Now officially published and FREE to access:
Sensitive periods to train general motor abilities in children and adolescents. Do they exist?
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With all critique on Magnitude-based inference, I decided to make 2 videos for
@SportPerfSciR
. One where I explain what MBI is and a 2nd one where I discuss some of the critique in a hopefully understandable way
Video 1:
Video 2:
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In a new study we show that the single-leg Roman chair hold is more effective than the Nordic hamstring curl at improving
#hamstring
strength-endurance
Full-text requests :
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PhD done ✅
Last Monday I successfully defended my PhD thesis entitled: Running injury prevention and performance enhancement: From the lab to the field
What an amazing journey have the last few years been!
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Comparison of hamstring muscle activation during high-speed running and various hamstring strengthening exercises
Max EMG during the exercises was on average 40-65% (ST), 18-40% (BF) & 40-75% (SM) of max hamstring EMG during a sprint
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Some strength training exercises for running-based sports based on Frans Boschs' work. Full video in link:
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Excessive pelvis & trunk motion probably increases hamstring injury risk
Train coordination for injury prevention!
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Training with muscle damage/soreness may hinder motor learning, potentially due to altered proprioceptive info & CNS reorganization that may disturb internal models
Therefore, don't plan motor skill work 24-48h after a heavy training session
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Why do individuals with a higher VO2max often have a poorer exercise economy?
A higher oxidative phosphorylation leads to increased ROS production. Larger ROS can be counteracted by higher mitochondrial uncoupling but this requires higher oxygen consump.
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Now officially published & editor choice of the month: Muscle forces and fascicle behavior during the Nordic curl, Deadlift and Roman chair
Thread with most important findings:
New FREE paper in which we compare
#hamstring
fascicle behavior and muscle forces between the Nordic hamstring exercise, Roman chair and deadlift
More info, images & videos in thread ⬇️
@kenneth_meijer
@BeBiomech
@SamVanRossom
@NMS_UM
@HumanMoveSci_UM
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In a new study we investigated the physiology & training of a 75-year old multiple world record holder middle distance runner
VO2max was the highest ever recorded @ 75+ years: 50.5 ml/kg!
Free full-text
Video of the measurements
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Now officially published and already 20k+ downloads: Do We Need a Cool-Down After Exercise? A Narrative Review of the Psychophysiological Effects and the Effects on Performance, Injuries and the Long-Term Adaptive Response
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Can we predict injuries? Not really. Most tests do hardly a better job than a coin toss!
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The formatted version of our paper investigating hamstring fascicle behavior and muscle forces is now online:
Now also a higher quality synched motion capture and ultrasound video below
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Now published: study in which we investigated the physiology & training of a 75-year old multiple world record holder middle distance runner
VO2max was the highest ever recorded @ 75+ years: 50.5 ml/kg!
Free full-text
Video:
Now ahead of print: Physiological, Spatiotemporal, Anthropometric, Training, and Performance Characteristics of a 75-Year-Old Multiple World Record Holder Middle-Distance Runner by
@BasVanHooren
, Guy Plasqui & Romuald Lepers
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In a new study we investigated the accuracy of two free markerless motion capture methods for assessing running technique: OpenPose & a custom-trained
@DeepLabCut
model
Are these tools accurate enough for kinematic running analyses? More details in thread
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New paper on the effects of ankle position during the Nordic Hamstring exercise on range of motion, heel contact force and
#hamstring
muscle activation
Nice collaboration with
@IkerJBautista
,
@luisobaraja
, Juan Mampela, Fernando Martin & Sergio Izquierdo
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Injury & re-injury may be the result of a reduced variability. Excellent review by Hamill & colleagues.
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Our paper comparing
#hamstring
fascicle behavior and muscle forces between the Nordic hamstring exercise, Roman chair and deadlift has just been selected as paper of the year in the respected Scand J Med Sci Sport based on having a high level of scientific rigour and impact
New FREE paper in which we compare
#hamstring
fascicle behavior and muscle forces between the Nordic hamstring exercise, Roman chair and deadlift
More info, images & videos in thread ⬇️
@kenneth_meijer
@BeBiomech
@SamVanRossom
@NMS_UM
@HumanMoveSci_UM
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825
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Now published: new study where we assess the accuracy of 15 different
#CPET
systems during simulated & real exercise
We extensively discuss the implications for clinicians, researchers and other CPET users.
FREE full-text
Short thread below
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Thursday 12:15 I will be presenting my poster on a biomechanical comparison of three hamstring exercises
@ISB_2021
.
Drop by if you want to learn about
#hamstrings
fascicle behavior, muscle forces, activation, and the implications for training & rehab
#ultrasound
#biomechanics
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25
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2nd place at the Dutch national championships 10km road in a massive 38 sec BP of 28.41
Have been finally able to train consistently for the last ~2 months and put in a lot more training volume than before. The hard work finally pays off.
Up next: Dutch nationals cross-country
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New paper: Sensitive Periods to Train General Motor Abilities in Children and Adolescents: Do They Exist? A Critical Appraisal
Free full-text here and more info in thread below:
#LTAD
#youth
#training
#children
#adolescents
#sensitiveperiods
#Strength
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Tomorrow (9-9-21) I will present on a biomechanical comparison of three popular hamstring exercises
@E_C_S_S
track 3 ~9:30 CET. Join if you want to know which exercise has the highest
#hamstring
forces and fascicle length changes
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Are there biomechanical differences between
#treadmill
and overground
#running
? What is their effect on
#injuries
, performance and research outcomes? How can we minimize differences?
Find out here:
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On 17 June 16:00, I will defend my PhD thesis entitled "Running injury prevention and performance enhancement: From the lab to the field"
Prior to the defence there will be a symposium.
Want to attend the symposium and/or defence? Let me know asap:
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Did you know our muscles have gears?
In a new FREE paper we show that muscles are less able to benefit from this gear (architectural gearing) in isometric vs dynamic contractions
We discuss implications for the assessment of RFD, transfer, and more
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New review where we compare physiological, perceptual & performance measures between treadmill & overground running
1 of the key points: Wether a 1% treadmill grade is required to match TM & OG running depends on speed
Free paper:
Excellent collabor.!
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Is there really an eccentric hamstring action during running? Now officially published
@JSportsSci
@FransBoschBook
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The study we all have been waiting for (or at least I): should you keep increased distance (>1.5 m) when running/cycling to prevent getting infected/infecting others with COVID-19?
New research suggests yes (more in thread below)
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Hamstring part I now also online:
Conclusion: No eccentric, but an isometric hamstring action during running
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Hamstring Part II with implications for exercise also accepted. Main message: ISO exercise perhaps better than ECC exercise for hamstrings
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New paper where we -for the 1st time- investigate which 3D running technique components over a whole gait cycle are most relevant for classifying runners as having better/poorer running economy or running higher/lower weekly distance
Free article:
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Nice to see that our research on cool-downs has generated so much interest:
>100.000 downloads & in the all time top-3 of
@SportsMedicineJ
outputs
Freely available here:
#recovery
#exercise
#research
#cooldown
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More evidence that longer fascicles are better for speed, but may be detrimental to endurance performance.
More on this & implications for training coming soon
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New paper by
@TonyBlazevich
& co on the effect of resistance training on isometric RFD
Key findings
- Faster speeds evoke greater
increases in RFD
- Intent to develop force rapidly (regardless of velocity) & specificity of training also influence effect
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Honoured to be awarded the 2nd place in the poster price at
@E_C_S_S
for our study on energy expenditure in professional cyclists after last year also receving a young investigator award for the oral presentation on muscle forces and fascicle behaviour during hamstring exercises
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More evidence that fascicle lengthening occurs only towards the end of the NHE as we also showed. Large ROM therefore required to induce architectural adaptations?
Paper: by
@patricio_ppm
@CristianMatthey
@GlenLichtwark
Our paper:
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Finally time to reflect on some publications from 2018.
The first one is a study where we showed that the single-leg Roman chair hold is more effective than the Nordic hamstring curl at improving
#hamstring
strength-endurance.
In a new study we show that the single-leg Roman chair hold is more effective than the Nordic hamstring curl at improving
#hamstring
strength-endurance
Full-text requests :
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New FREE paper lead by
@PeterDuking
where we 1) investigate the accuracy of VO2max estimated by a
@Garmin
sport watch, and 2) discuss whether this estimated Vo2max is actually of any use to runners
More info in thread below ⬇️
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Our review in which we show that the Nordic curl can 1) improve sprint performance (although likely only a small effect) and 2) leads to moderate increases in knee flexor strength is now officially published & available here:
More info thread below⬇️
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In a new study we show that the single-leg Roman chair hold is more effective than the Nordic hamstring curl at improving hamstring strength-endurance as measured during the single-leg hamstring bridge.
Full-text requests here:
📌SL Romanian Chair Hold🆚Nordic Hamstring Curl
🧐¿Which improve hamstring strength-endurance in Gaelic footballers with previous hamstring injury?
✅Romanian Chair➡️Improve performance in SLHB
❌NHC➡️Not substantially improve SLHB performance
📕Macdonald et al., 2018
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Must read thread for anyone involved in teaching
Tomorrow first lecture, new students
@PPW_KULeuven
. My first slides are ready. (A couple of new ones this year!)
1/6
Providing PowerPoint Slides prior to class has an adverse impact on performance of students.
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Finally finished my new website with blogs about various sport science topics, links to podcasts & videos and much more
Interested in workshops, or consultancy? Check out the possibilities!
#website
#sportscience
#workshop
#blogger
#consultancy
#podcast
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Straight sprinting ability = important in football and needs to be trained. Much to learn from athletes here.
Research by
@OliverFaude
also shows that straight line sprinting is the most frequent action that precedes a goal:
#football
#soccer
#sprint
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Is resistance training effective at improving RFD? Syst Rev now published in
@NSCA
@FransBoschBook
@kenneth_meijer
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5th place and new PB at national championship 10KM in 29:27.
Lot of wind and I had no clue what performance I could expect from myself, and therefore started sprinting slightly too late. Nevertheless very happy to be back on this performance level after two years
#running
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New study where we assess the accuracy of the first ventilatory threshold derived from DFA-a1 of HRV when assessed with a chest belt (as opposed to ECG) during running, and with and without acute fatigue.
More details in thread below
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Findings of new study suggest that hamstrings fascicles are slack at short muscle lengths during passive stretch
Similarly during swing-phase of running? First uptake of slack due to pendulum action of the lower leg?
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We published our
#dataset
of running kinematics, kinetics and muscle activation at different speeds, surface gradients, cadences and with forward trunk lean for free
+ an accompanying article with explanation on how to use the dataset
Paper:
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New FREE paper were we show that isometric single-joint rate of force development (RFD) shows trivial to small correlations with RFD in jumping, jump height, and propulsive duration
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Why do cyclists eat so much during competitions?
In our recent publication we show that prof. cyclists use 5637-8527 kcal/day during the Vuelta!
67% of this is required by the cycling, 25% by the BMR, and 8% by other activities
More info in thread
How much energy do professional cyclists use during the Vuelta and Ardennes Classics races? And how can we more accurately estimate their energy expenditure to inform on energy intake?
Find out in our new FREE publication:
Short summary in thread below
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Why rehabilitation processes employing nonchallenging coordinative tasks typically fail to generate optimal recovery
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New paper lead by
@MattCrossNZ
were we investigate the effect of a countermovement jump vs a squat jump on F-V profiling outcomes in sprinters and alpine skiers
Short thread below
Paper:
Request free full-text here:
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FREE PDF (for 4weeks) of our recent review on physiological, perceptual and performance differences between treadmill and overground
#running
PDF:
Website version:
Image credit: runsociety
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Different scales can be used to quantify the sRPE. New study shows that although producing different absolute numbers, sRPE derived from either the BORG-CR10 or BORG-RPE provide essentially interchangeable estimates of perceived exercise training intensity
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More evidence for
#preflex
effect of co-contractions on
#injuries
Reflex = too slow -> train preflexes
#muscleslack
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We have done several case studies on world-class male master athletes. But what about the females?
With
@MicZanini
we assessed Jeannie Rice in the lab for physiological assessment following her recent marathon world record in London (3h33’ at 76 years old).
Results soon...
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Are Change-of-Direction Speed and Reactive Agility Independent Skills Even When Using the Same Movement Pattern?
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I was recently interviewed by
@washingtonpost
about the differences between treadmill and overground running, read it below.
Link to some research we have done
?
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Exercises performed early in the training session show greater improvements in strength. Therefore, perform exercises you want to improve on mostly at the beginning of your training session
Online first: What influence does resistance exercise order have on muscular strength gains and muscle hypertrophy? A systematic review and meta-analysis by
@joaonunesjpn
#sportscience
#strengthtraining
💪
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New paper were we define a test method to assess the mechanical properties of
#treadmills
. Using this method we show 1) differences between zones (see image) and 2) we show commercial treadmills do not match the mechanical properties of tracks or concrete
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Great paper by
@RoaldBahr
@benclarsen
@JanEkstrand
Focus not only on incidence of injury, but also on severity!
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Does taking some extra rest within your resistance training set lead to better training adaptations? Our new paper lead by
@JukicIvan
suggests it does for power-related outcomes!
FREE access here:
More info in thread below ⬇️
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Very happy with a 3rd place @ the Dutch national cross-country championships in a strong international field. Hopefully also qualified for the European cross-country championships 11 Dec @ Dublin
Also 3rd place with the team!
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Modified-single-leg squat produced higher hamstring muscle activation than stiff-leg deadlift or bilateral squat
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New FREE paper: Ultrasound imaging to assess skeletal muscle architecture during movements: A systematic review of methods, reliability, and challenges
Freely available here:
More info in thread below⬇️
#muscle
#ultrasound
#architecture
#fascicle
2
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New article published
@FrontPhysiol
. We discuss some applications of the dynamical systems theory & specifically attractors to prevent walking & running injuries
Excellent team effort with
@chrismccrum
&
@kenneth_meijer
Free full-text!
@HumanMoveSci_UM
0
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How much energy do professional cyclists use during the Vuelta and Ardennes Classics races? And how can we more accurately estimate their energy expenditure to inform on energy intake?
Find out in our new FREE publication:
Short summary in thread below
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70
New FREE paper in which we discuss current approaches and challenges of real-time feedback by
#wearables
in
#running
and we provide suggestions for improvements
The figure shows our proposed framework to reduce dropout from different perspectives
More⬇️
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Excellent study by Folland and co showing that running technique is an important component of running economy and performance in a sample of 97 (!) runners.
--> Train technique to improve performance!?
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Again more evidence that there are no general motor abilities such as balance. Balance is specific for each task
2
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New randomized-controlled trial among 220 runners where we show that wearable-based (
@atogear
) real-time feedback may reduce the risk and severity of running injuries
We also investigated effects on:
Performance
Motivation
Much more
Free full-text:
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Last Tuesday we assessed the accuracy of 7 different
#CPET
systems during simulated and real exercise
Interested how accurate the systems were and whether the system you are using has been assessed?
Results will follow soon...
#validation
#physiology
#accuracy
#exercise
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Why is the new world-record holder marathon 70+ faster than his predecessor?
Find our in our new paper (or check the thread below):
Note: the athlete started running at 36 years after high blood pressure diagnosis. It is never to late to start exercise!
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New study were we have validated pressure insoles by
@ARION_run
for measuring spatiotemporal running metrics
-Most comprehensive validation protocol of a running wearable to-date
-New method to objectively quantify agreement
Free paper:
More details ⬇️
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Very happy with a 2nd place at the Dutch nationals 10KM in very hot conditions (7 pp DNF).
Also happy with a time of 29.01 in such conditions
Now finally ready to have a nice track season for the first time in years
#running
#hardlopen
#Nederlandskampioenschap
#race
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Excellent presentation by
@TonyBlazevich
on the use of ultrasound to assess muscle architecture and the relation of this architecture with strength & performance
2
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2020 flashback 3) Ultrasound imaging to assess skeletal muscle architecture during movements: a systematic review of methods, reliability, and challenges
Want to know how to collect & analyze
#ultrasound
data? Make sure to read the paper!
FREE full-text:
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#Hamstring
part II is now online
Adaptations following ECC training may be due to intensity not contraction type
0
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Happy with my half marathon debut yesterday
@Venloop
in 1:03:54
Had no clue what to expect so started off a little too slow in hindsight and eventually ran almost the entire race alone/in front of two other runners.
Incredibly atmosphere during the run!
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New FREE review with meta-analysis lead by
@JukicIvan
were we review the acute and chronic effects of
#velocity
-based resistance training and provide a critical evaluation of the literature.
Thread with most important findings (& nice figs) below
1
11
61
Now officially published in SJMSS: our study where we assess the accuracy of 15 different
#CPET
systems during simulated & real exercise
We extensively discuss the implications for clinicians, researchers and other CPET users.
FREE full-text
1
7
57
An increasing nr. of runners use wearables.
In a new paper we investigate whether 6-months in-field real-time biomechanical & speed feedback from a wearable insole
@atogear
is effective at improving running economy & changing running technique
Free paper
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