Head of Youth Physical Development @Vålerenga Fotball. PhD on the training of youth athletes from Norwegian School of Sport Sciences @nih_physicperf . S&C coach
Joined July 2009
- Tweets 638
- Following 690
- Followers 389
- Likes 603
22 Photos and videos
Halvard Grendstad, PhD retweeted
21 Nov 2024
Great trip to Norway with @David_johnson11 to help @eirikwik @GrendstadH @ThomasBroBra and the @nff_info educate academy staff on growth and maturation in academy football @UniofBath @CHi2PSBath @UKCCIIS #heianorge 👏⚽️🇳🇴🔬
2
3
28
4,030
31 May 2024
Presenting some very interesting findings at #acsm2024 on endurance-training girls that hopefully will be published in a journal soon 👇
The impact of puberty strongly influences the development of VO2max and may obscure potential training-induced changes for the 🫀 and🩸
13
367
Halvard Grendstad, PhD retweeted
14 May 2024
Really nice set of images illustrating the variance in maturation that can exist within age groups
9
36
6,008
Halvard Grendstad, PhD retweeted
6 Nov 2023
Spennande forskingsnytt nå like før skisesongen startar. 12-åringar som trena hardt blei ikkje betre enn dei som hadde leika. – Funna våre viser at puberteten er den viktigaste faktoren for utvikling av kondisjon, seier stipendiat @GrendstadH #langrenn forskning.no/barn-og-ungdom-…
1
13
35
48,203
Halvard Grendstad, PhD retweeted
2 Nov 2023
New publication out: "Exploring growth, maturity and age as injury risk factors in high-level youth football"⚽
Preliminary (pre-typeset) full-text available here: tinyurl.com/3a6jabe9
1
14
80
11,904
7 Sep 2023
🆕 First PhD study out!
🏃Coaching youth athletes and considering to boost fitness in pre-season? 👇
🔍Our findings show that high-intensity training do not improve VO2max more than low-intensity strength or play-based training.
Link: doi.org/10.1111/sms.14489
@JosteinHallen
7
35
3,158
Halvard Grendstad, PhD retweeted
5 Sep 2023
This is definitely worth a read for those interested in maturity-biases in sports - lots of great insights and quotes from coaches on advantages/disadvantages of maturing early or late in academy football!
7 Aug 2023
🆕 Beyond the coaches eye: Understanding the ‘how’ and ‘why’ of maturity selection biases in male academy soccer - Megan Hill, Thomas John, Darragh McGee, Sean P. Cumming, 2023
journals.sagepub.com/doi/10.…
3
6
1,729
19 Jun 2023
🎧 En flott podcast av @jevnehelse og @StianChri1 som jeg fikk være gjest på sammen med @eirikwik
🏃🏼♂️🩻 🌱 Topp diskusjoner rundt vekst, skader og effekt av trening i puberteten.
Kan være mye å plukke opp for trenere og andre med fot i ungdomsidretten 🙋🏼♂️
podcasts.apple.com/no/podcas…
4
1,367
14 Jun 2023
🌱Puberty is an important time for healthy and strong bones to develop 🦴
🏃🍽️For young athletes, eating enough food and vit D are two factors to promote healthy bones and possibly reduce injury risk, especially during the dark winter (hey all🇳🇴🇸🇪)
A nice short review on this👇
1
2
205
14 Jun 2023
105
6 Jun 2023
"Den tidlige veien til voksenidrett er ikke for alle"
🧊 Vi trenger litt is i magen og ekstra tålmodighet når vi skal utvikle våre neste idrettsutøvere. Alle blir voksen til slutt 🌟💪
En kommentar fra @H_Herrebroden og meg
#idrett #talentutvikling
dagsavisen.no/debatt/2023/06…
1
4
334
3 Jun 2023
Godt skrevet om utfordring i idretten
Mer fokus på tidlige resultater og prestasjon er ikke en god utvikling, og heller ikke noe det er bevis for at gir bedre prestasjoner som voksen.
Barneidrett må være for barn, ikke voksne
Tid for selvransakelse nrk.no/ytring/1.16431181
3
292
31 May 2023
Flott at NFF er på ball, med en strategi Belgia startet for mange år siden 👍 Ett godt tiltak, men vi har fortsatt mye å hente på å utjevne forskjeller i ungdomsfotball.
vg.no/i/Kn17j7?utm_source=ko…
1
1
242
31 May 2023
Hvis du vil vite mer om pubertet og prestasjon har jeg snakket i en podcast med DBU 🇩🇰 om tema tidligere 👇
gamechanger.nu/podcast/praes…
1
149
20 Jan 2023
Signs of athlete's heart already by the age of 12 in👧&👦endurance athletes. Through adolescence, boys🫀 adapt and enlarge more than girls🫀.
Nice figs and study with data from a cohort in our research group @MarianneForsaa @JosteinHallen @ThorEdvardsen
openheart.bmj.com/content/10…
1
8
546
10 Jan 2023
💥 Great review discussing the challenge of maturation in youth (male) sport, and the different approaches to level the playing field in selection and training/competition 👇🏼
mdpi.com/2058514 #mdpichildren via @MDPIOpenAccess
4
495
24 Nov 2022
Offside rule 101 with some very nice graphics. Nothing new here (for those who knows the rules) but maybe some inspiration to explain other complicated topics in an easy way 🤩 washingtonpost.com/sports/in…
2
9 Nov 2022
Research does not always involve lab coats and measuring o2 and blood 🌡 Various efforts are done behind the scenes but are rarely revealed. Mine today:
Picking up our 13-yr old subjects in a bus 1hr from of our lab, listening to them singing Justin Biebers “Baby” on repeat 🤷🏼♂️😅
1
10
7 Oct 2022
Just out!
In 🇳🇴 track running, the relative age effect is evident in both 60m and 600m
What is striking, something happens around peak growth spurt for most boys (13-14 years)🤔They run from both the girls and their relatively younger classmates
Open📖
doi.org/10.1371/journal.pone…
1
3
11
7 Oct 2022
The odds of being the best (top 100) do persist to senior level but decreases.
Take-home message: focus on mastery and individual progress rather than performance between individuals in the same age group. Give all young athletes time to reach their potential ⭐️
2
3