tag:blogger.com,1999:blog-47822946949853564642024-03-19T11:49:23.203+02:00Science & Medicine in SportsTranslating science into effective practiceGeorge Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.comBlogger224125tag:blogger.com,1999:blog-4782294694985356464.post-52467483100908131302019-04-09T18:55:00.005+03:002019-04-09T18:55:44.688+03:00Which parameters to use for sleep quality monitoring in team sport athletes?
Our paper FREE to download here
George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-5657630912979935842019-04-08T20:16:00.000+03:002019-04-08T20:16:37.145+03:00Injury prevention training in football: let's bring it to the real world.
Our latest paper in British Journal of Sports Medicine. You can reach it here or here.
George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-81626604812890710822019-04-08T19:53:00.000+03:002019-04-08T19:53:12.243+03:00Not every load is risky for an injury
Figure: Load (resulting stress), frequency and injury risk.
Hello All. Here I'm again after a long absence. Today, I would like to drop few lines on load, frequency and injury risk relationship. I'm stimulated from the recent consensus statement on load and injuries in Medicine & Science in Sports & Exercise. To download this paper click this link here. Great read.
Looking at figureGeorge Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-5809277010646958882018-10-05T15:47:00.000+03:002018-10-05T15:47:50.777+03:00Liverpool vs Manchester City: Who are ready for selection?
The Liverpool vs Manchester City match will definitely attract most of the interest this weekend. Both teams have competed for the UEFA Champions League mid-week and this makes things slightly complicated. Are all players ready for selection? I tried to replicate a hypothetical scenario having player A and B and assuming they are both equally important for tactical reasons. I have George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-63836445732390537272018-09-26T20:07:00.000+03:002018-09-26T20:19:39.622+03:00“Coach, let’s do HIIT today!” “Hmm, not a good idea”.
How many times have you heard this? Let’s do HIIT to make
us feel better? It’s not uncommon. High-Intensity Interval Training (HIIT) is popular, but in fact its popularity
resides mostly amongst the scientists. Coaches are more conservative, and fear implementation
of HIIT, at least as it is described in scientific papers. Indeed, the very
first studies of the revised HIIT model from Canada George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-66624235544752437672018-09-25T16:07:00.002+03:002018-09-25T16:09:17.908+03:00Decelerations, accelerations, total workload and return to play: food for thought
Today, I had the chance to read a fantastic recent editorial on the nature of decelerations in football and their contribution on player's mechanical load. Here is the link to the full paper which I hope you enjoy.
With this opportunity, I had also the time to think more about the topic. No doubt that decelerations as well as accelerations should be taken into account when quantifying George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-14540392375783756572018-05-14T08:31:00.000+03:002018-05-14T08:31:14.990+03:00Real world research worth exploring: Machine learning algorithms in injury prevention
Today, I would like to comment on a recent paper reporting the use of machine learning algorithms to estimate injury risk in team sports athletes (López-Valenciano et al., 2018). Machine learning (ML) is a relatively new approach in sports medicine and science that applies certain algorithms, mostly without pre-defined assumptions, to solve complex problems like the sports injury George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-80815480139794733072018-05-08T08:59:00.001+03:002018-05-08T08:59:32.638+03:00Real world research worth exploring: Accelerometer-based prediction of sports injury
analog.com
The use of accelerometers in studying the non-contact injury risk is a hot topic both in team and individual sports. Recently a research team from the University of California tested the hypothesis that the running-related injuries were the result of a combination of high load magnitude and strides number that result in accumulated microtrauma (Kiernan et al., 2018). During the George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-47242991977687040952018-05-02T11:26:00.000+03:002018-05-02T11:40:59.099+03:00Player performance metrics: time to reconsider our approach!
There are different performance metrics but most of them are looking at football performance in a fragmented way. For instance, match running distance at different speeds is considered as an important index, sometimes without taking into consideration the match context (player's position, opposition performance etc).
Also, it seems that some actions, very decisive for the team George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-8543068025082064742018-02-05T07:59:00.001+02:002018-02-05T21:29:16.188+02:00How to test your players? 如何测试你的运动员的健身?
Fitness testing in football (soccer) can be a useful tool to 1) identify individual's needs, 2) reduce the risk of injuries, and 3) optimize training plans and performance. There is a number of tests that a sport scientist and practitioner can use. Before you choose, it would help if you answer the following questions:
-Why am I testing the players?
-What is my plan for the next month and the George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-63419356167515330532018-01-11T10:30:00.000+02:002018-01-11T10:30:50.535+02:00Coach, better to do whole body cryotherapy or cold water immersion?
This is a frequently asked questions by players and competitive athletes
after they have completed prolonged and exhaustive exercise. Should you have
the resources available in your club, this is a true dilemma. Both forms of
cryotherapy, either whole body cryotherapy (BC) or cold water immersion (CWI)
are used to speed up recovery. The suggested mechanism of potential beneficial
effect ofGeorge Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-47384262251653601642018-01-02T10:25:00.000+02:002018-02-06T18:19:04.966+02:00The best scientists get out and talk to the coaches
Are you a sport scientist and medical team member wondering why the coaches can't understand you? To make you feel better let me say you are not the only one. In a survey with high level football club staff it was reported that their injury prevention programs' effectiveness was lower than initially expected. The reason being the low coaches' engagement (1).
As many would agree there is a gap George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-61214400413406832912017-07-27T18:07:00.001+03:002017-07-27T18:07:34.931+03:00Why RPE is not the best tool to identify athletes in risk of injury?
Published
J Strength Cond Res. 2017 Aug;31(8):e77-e78. doi:
10.1519/01.JSC.0000522116.12028.06
Reply to Manuscript
Clarification for the paper:
Brito J, Hertzog M,
Nassis GP. Do match-related contextual variables influence training load in
highly trained soccer players? J Strength Cond Res 30:393-399, 2016.
Title:
Workload assessment in
soccer: an open-minded, critical thinking George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-66246457468924867782017-06-05T16:39:00.001+03:002017-06-05T16:57:09.230+03:00Leadership tips for sports science & medicine staffGeorge Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-20555170828009064352017-05-12T17:12:00.000+03:002017-05-12T17:12:07.262+03:00The evolution of talent ID programs & long-term performance development modelsGeorge Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-22944168964629771162017-05-02T06:11:00.000+03:002018-01-03T14:47:44.831+02:00The future of workload monitoring in football (soccer)
To read the above post click here
George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-70845876675216184762017-05-01T18:35:00.000+03:002017-05-01T18:35:02.726+03:00The Transition Period in Soccer: A Window of Opportunity
Below is a review paper we published last year with relevant points and practical advises. Should you are interested in learning more please click on the link here and send me an email. Limited copies will be provided. The infographic is by Dr Yann Le Meur.
Sports Med. 2016 Mar;46(3):305-13. doi: 10.1007/s40279-015-0419-3.The Transition Period in Soccer: A Window of George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-76662706475146245552017-04-26T18:45:00.000+03:002018-01-03T15:15:58.234+02:00The evolution of training load monitoring George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-10670841651054503712017-04-21T07:04:00.000+03:002018-05-11T08:49:11.035+03:00Injury prevention training in football: Time to consider training under fatigue?
dailystar.co.uk
by Darren Paul, Joao Brito, George Nassis
published in Aspetar Sports Medicine Journal (download pdf here)
Muscle injuries often occur towards the end of each half and this has been associated with fatigue (1). Current practice often means injury prevention training is performed at the start of the session. The hypothesis is that when training is performed in a George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-82000936071167005702017-04-19T16:15:00.000+03:002018-01-03T14:50:33.368+02:00What are the barriers to effective implementation of injury prevention practices in high level football?
Graph 1
In the survey of workload practices of high level
football clubs (Akenhead & Nassis), 41 sport scientists and fitness coaches
responded to specific questions. There were two questions relevant to this
post’s title; one asked the participants to rate their perceived expected and
actual effectiveness of their strategy on injury prevention and performance
enhancement. The other George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-4772257260465155242017-04-05T18:01:00.000+03:002017-04-05T18:01:35.649+03:00Workload monitoring in football (soccer): what do high level teams do?
We have surveyed the practices of high level football
clubs in terms of workload monitoring tools and approaches they use.
Questionnaires from 41 teams were collected: 16 English Premier League, 7 Major
League Soccer (USA), 7 English Championship, 4 Ligue Un, 2 teams from the
Scottish Premier League and 1 team from each of Serie A, La Liga, Dutch
Eredivisie, Australian A League and the Swiss George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-84290410625656424522017-04-03T16:59:00.000+03:002017-04-03T17:10:22.476+03:00Can genetic testing identify if your child is a talented athlete?
for source see below
In recent years we have experienced the rise of an
emerging market of direct-to-consumer* genetic testing that claims to be able to
identify talented children who have the potential to become elite athletes. Applying good marketing these claims target the parents and the coaches. What is the
truth? Do genetic tests help in talent identification?
A panel of world George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-68769963438184818692017-03-29T19:03:00.003+03:002017-03-29T19:03:44.454+03:00What are the key leadership skills required by sports professionals? lessons from Sir Alex Ferguson
Coaching a team or leading a sports science and medicine team requires
leadership skills. People have different perceptions on which is the most
effective approach to achieve top performance. Better to learn from the top
leaders.
Sir Alex Ferguson is one of them and in this video he is
sharing his thoughts and practices. It is worth watching clicking here
George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-73687673450303146902017-03-29T18:52:00.001+03:002017-03-29T18:52:23.100+03:00Improve players' aerobic capacity to protect them from injuries
The general consensus up to date is that rapid changes in workload are
associated with higher risk of muscle injuries. To monitor the workload trends,
practitioners now employ the acute (last week) to chronic (last 4 weeks) workload
ratio.
It seems, although the data are limited, that a ratio between 1 and 1.25
is protective to injuries in professional soccer players. The question isGeorge Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0tag:blogger.com,1999:blog-4782294694985356464.post-3908849558666526762017-03-15T17:40:00.002+02:002017-03-15T19:21:07.620+02:00What have we learned from UEFA Champions League so far?
uefa.com
We are reaching the
end of the round of 16, with 2 matches missing tonight, and here I have
summarized lessons to be learned so far.
Lesson 1: Don’t always trust the numbers:
From a data analysis perceptive Sevilla FC could have won the match yesterday.
Compared to Leicester City FC, they had more ball possession (68% vs 32%), more
passes completed (531 vs 199!), higher passes George Nassis, MSc, PhD, Twitter @gnassishttp://www.blogger.com/profile/14469441218458686241noreply@blogger.com0