http://web.me.com/johnhellstrom/index.htmlHot News!enJohn HellströmCopyright 2012, John Hellström2012-04-27T09:36:00+02:00 hourly 1 2000-01-01T12:00+00:00 tis, 15 maj 2012 10:05:05 +0200John HellströmHome2012-04-27T09:36:00+02:00http://web.me.com/johnhellstrom/index_files/fc30b96ba7be87a5a6519ff21ca855c2-14.html#unique-entry-id-14http://web.me.com/johnhellstrom/index_files/fc30b96ba7be87a5a6519ff21ca855c2-14.html#unique-entry-id-14

The figure shows one players nine balls from 30m between the two different situations.

• S=Side miss in meters, - is left and + is right
• D=Distance miss, - is short and + is long
• Absolute means signs are disregarded when summing them together
• PEI%=Percent Error Index %, i.e. the distance to the target divided with distance from the target x 100.

The intention was to increase the focus during training, as all shots counts, and to have individual data to discuss training with. How do you interpret the result from 30m between blocked range test vs varied course test if this data set was larger? What lessons can be learned and how can tests like this be used pedagogically?
]]>John HellströmHome2012-04-23T20:36:35+02:00http://web.me.com/johnhellstrom/index_files/7101aa9ef5e65c262697c3f35c23693c-13.html#unique-entry-id-13http://web.me.com/johnhellstrom/index_files/7101aa9ef5e65c262697c3f35c23693c-13.html#unique-entry-id-13Swedish Golf Team teams up to do an exciting education of club delivery, impact and ball flight for dedicated players and coaches at Österåker GC, Stockholm, Sweden the 28th and 29th of June. Read more about the education at Trackman homepage. See also PGA Tour players radar stats here.

Agenda
The agenda covers the curriculum for TrackMan University Level 1 and Level 2 plus extra information:
• TrackMan’s ten fundamentals.
• Secrets of the straight shot.
• The “new” ball flight laws. D-­plane theory and practice, see also SGFs book ”Mot lägre scorer” (2006).
• World-­‐class players club delivery and ball flight data.
• B-­plane theory and practice. Link ball flight and club delivery adjustments to technical changes.
• The SwGT need profile and TrackMan Combine. How do you measure up against world-­class players?

Sign up now to secure your booking!


I will team up with radar engineer and TrackMan inventor Fredrik Tuxen! ]]>John HellströmHome2012-04-12T07:06:00+02:00http://web.me.com/johnhellstrom/index_files/98719b6e3bc9b012995783e444194500-12.html#unique-entry-id-12http://web.me.com/johnhellstrom/index_files/98719b6e3bc9b012995783e444194500-12.html#unique-entry-id-12Bubba Watson is not the average tour player. The way he trains and plays is different. Take a look at the recent Bubba interview at Letterman:

Letterman: How did you get your name “Bubba”?
Watson: My dad.
Letterman: Fifty percent of the recent winners at Augusta have been left-handed, is that true?
Watson: Fifty percent are right-handed too.
Letterman: How would you describe your personal style of play, your personal approach to golf?
Watson: Awesome.
Letterman: Do people ever say, “If you drop your head and lift your elbow...”?
Watson: They do say that but I don’t know what they mean.



]]>John HellströmHome2012-03-24T08:42:00+01:00http://web.me.com/johnhellstrom/index_files/689a71bd8b23265e0b0a9be54778cecb-11.html#unique-entry-id-11http://web.me.com/johnhellstrom/index_files/689a71bd8b23265e0b0a9be54778cecb-11.html#unique-entry-id-11Swedish Golf Team is supporting players and coaches with technical measurements, analysis and training recommendations. We use biomechanical equipment when needed. The action plan is done together with the players home coaches, based on objective data.

This Saturday, the girls team with coach Lisa Westman arranged for a technical follow up for promising players and their coaches. Fredrik Wetterstrand did putting analysis with SAM putt lab, and technical recommendations.

On the full swing, I used high speed cameras, TrackMan, and 3D to collect data and to practice with instant feedback. It is nice to see how the players are improving and how quickly most can get results when getting accurate and instant feedback.


Discussing the effect of a changed impact with Emma Nilsson, her coach David Green and Fredrik Wetterstrand.


Testing Adam Ström with coach Ola Lindgren watching via Skype (from the Apple notebook).
]]>John HellströmHome2012-03-19T11:39:52+01:00http://web.me.com/johnhellstrom/index_files/2bfb1c670dadf9cc4d6702eb14e524fa-10.html#unique-entry-id-10http://web.me.com/johnhellstrom/index_files/2bfb1c670dadf9cc4d6702eb14e524fa-10.html#unique-entry-id-10World Scientific Congress of Golf is just over. Experts from 16 countries participated in Phoenix, Arizona. I had two presentations; One about the top US PGA Tour players short game skill differences from fairway, rough and sand. The other was about optimisation in training. I had a great week discussing golf research with some of the smartest people in the business. See more at www.golfscience.org.


Dr. Vickers opened the conference and reviewed the research about Quiet Eye


Dr. Christina talked about Core Movement Patterns


Dr. Kwon presented new biomechanical theories about the golf swing


Networking with Dr. Neal, Hardesty, Dr. MacKenzie and Dr. Broadie (left to right behind me)]]>John HellströmHome2012-03-08T01:18:29+01:00http://web.me.com/johnhellstrom/index_files/f5b5ab7ebe9ef27ffe1273e2562f2f31-9.html#unique-entry-id-9http://web.me.com/johnhellstrom/index_files/f5b5ab7ebe9ef27ffe1273e2562f2f31-9.html#unique-entry-id-9
Improved target selection and external camera calibration
The target selection screen has been simplified and now shows a clearer image with live, streaming video to make target selection easier. Calibration of external cameras now uses a live, streaming video feed as well. Video settings and calibration of camera functions have been moved under the camera icon shown in the top, middle of the TPS software.

Webcam support
The quality of USB webcams has improved recently. Cameras such as Microsoft’s LifeCam Studio (www.microsoft.com/hardware/en-us/webcamst) offer very good picture quality both indoors and outdoors at an affordable price.

NOTE: USB webcams consume 50% of the USB bandwidth. If you want to record from multiple webcams simultaneously (the internal TrackMan camera counts as a webcam) you need to add an extra USB hub to your computer by a PC/Express card or similar (approximately 25 USD).

Short Game application (TrackMan III only)
A new Short Game mode is available for TrackMan III owners. The new hardware allows for the measurement of shots down to 2 m/yds. The Short Game application works both indoors and outdoors and includes all ball flight parameters (excluding spin axis). To measure the spin rate indoors the ball should be marked.

Ball Position overlay graphic
A new ‘Ball Position’ graphic has been added to the options available under 3D in the video window. This new graphic is available on down-the-line camera angles taken from the internal TrackMan camera and/or external cameras connected to your computer. The ‘Ball Position’ graphic helps determine visually where impact was made on the club face.

Geo-tagged data (only TrackMan III)
Using the built-in GPS in the TrackMan III radars, every shot hit on TrackMan is now tagged with latitude, longitude, and altitude information. If you have an active internet connection, clicking the hyperlink in the ‘Shot List’ takes you directly to GoogleMaps™ showing a real image of where the shots were hit.

.]]>John HellströmHome2012-02-23T17:37:24+01:00http://web.me.com/johnhellstrom/index_files/2027c036d1f9ff14c45709f44ac607ff-8.html#unique-entry-id-8http://web.me.com/johnhellstrom/index_files/2027c036d1f9ff14c45709f44ac607ff-8.html#unique-entry-id-8
http://www.golf.se/Folja/Nyheter/2012/2/Doktorshatten-pa-i-Orebro/


]]>John HellströmHome2012-02-15T18:03:47+01:00http://web.me.com/johnhellstrom/index_files/13a84c2fdffb1268f2fe15a39eb34bfe-7.html#unique-entry-id-7http://web.me.com/johnhellstrom/index_files/13a84c2fdffb1268f2fe15a39eb34bfe-7.html#unique-entry-id-7here.

]]>John HellströmHome2012-02-01T15:08:39+01:00http://web.me.com/johnhellstrom/index_files/15b1f4663433e70a00283113fe144542-6.html#unique-entry-id-6http://web.me.com/johnhellstrom/index_files/15b1f4663433e70a00283113fe144542-6.html#unique-entry-id-6
Research subject
Sports Science

Keywords
Golf, professional, world-class, expert, psychology, physique, technique, game statistics, tournament

Abstract
The competition in elite golf is fierce. Players therefore often have psychological, physical, and technical experts supporting them. The associations between these experts focus areas and how they relate to the playing results are valuable to understand, in order to create more effective training programs. The aim of this thesis is therefore to investigate the relationships between physique, technique, and playing results in golf, and to integrate these findings with psychological research on elite golfers.
Two review studies (A and B) and three empirical studies (I, II, and III) are included. Study A and B provide a theoretical foundation where the relationship of psychological, physiological, and technical variables to playing results is reviewed. The empirical studies (Study I, II, and III) were selected based on the findings in the reviews and the applied needs.
Study I shows that some stability test results are strongly correlated to swing technique. Study II found that strength tests as measured in absolute strength or power are strongly correlated to clubhead speed for elite players, but relative strength (percentage of body mass) is not. Study III used PGA Tour ShotLink statistics collected over a year to investigate tee shot accuracy, striking distance, and hole scores. It was found that the ability to hit the ball with high accuracy and a long distance is strongly correlated with low hole scores. Furthermore, the type of fairway miss is relevant to consider as well as striking distance in relation to the distance of the hole.
These results may be used to make gap and needs profiles. Task, personal, and environmental variables should also be considered before giving training advice based on test results. Future studies should further investigate the causality between key areas and playing results, and test the validity of models that may be used to analyze and set goals for elite golfers.

See more information at http://oru.diva-portal.org/smash/record.jsf?pid=diva2:483903


]]>John HellströmHome2011-12-31T09:26:48+01:00http://web.me.com/johnhellstrom/index_files/8316a3006694be5a4f7727fce789b090-5.html#unique-entry-id-5http://web.me.com/johnhellstrom/index_files/8316a3006694be5a4f7727fce789b090-5.html#unique-entry-id-5http://www.youtube.com/watch?v=AT7vmBWYEuc.]]>John HellströmHome2011-12-20T07:37:48+01:00http://web.me.com/johnhellstrom/index_files/f3b66d9332d34a4baef6f467e43e7688-4.html#unique-entry-id-4http://web.me.com/johnhellstrom/index_files/f3b66d9332d34a4baef6f467e43e7688-4.html#unique-entry-id-4Annual Review of Golf Coaching is soon released. You can read a commentary article by me about the accreditation process to become PGA Master in the UK.]]>John HellströmHome2011-12-04T01:07:56+01:00http://web.me.com/johnhellstrom/index_files/2589a25d202f67168db3b5f95d7416df-3.html#unique-entry-id-3http://web.me.com/johnhellstrom/index_files/2589a25d202f67168db3b5f95d7416df-3.html#unique-entry-id-3The new TrackMan III is released! It weighs just 7 pounds (3.2 kg) and stands only 11.8” x 11.8 x 2“”. With its built in high-speed camera, carry bag and long lasting battery, TrackMan III gives you more power and freedom to improve your teaching, your practice and your game.

Integrated hi-speed camera
Built-in 5-hour rechargeable battery
Weighs 7 pounds (3.2 kg)
Measures 11.8 x 11.8 x 2” (30 x 30 x 5 cm)
Session stats auto-stored on mytrackman.com and in ready-to-share reports
Measures ball flight down to 2 meters

]]>John HellströmHome2011-11-29T06:51:09+01:00http://web.me.com/johnhellstrom/index_files/8b7eaf96dd2ace9ce49c1b2e81ad554b-2.html#unique-entry-id-2http://web.me.com/johnhellstrom/index_files/8b7eaf96dd2ace9ce49c1b2e81ad554b-2.html#unique-entry-id-2TrackMan announced that I have become the first ”TrackMan Certified Master”. I was asked to do the tests in order to evaluate them, when attending the TrackMan conference in Madrid earlier this year. I accepted as I both like to test myself and to give feedback related to technique and ball flight in order to improve golf teaching in general.

I have been teaching the D-plane for about 10 years, based upon common physics and Jorgensens book ”The physics of golf”, in several countries. I later wrote a chapter about the D-plane in the Swedish Golf Federation educational literature ”Toward lower Scores” 2006, and published a scientific article containing research about the ball flight and impact and more (Competitive Elite Golf: A Review of the Relationships between Playing Results, Technique and Physique, 2009).

This knowledge has taken far too long time to be accepted in the golf community. I believe TrackMan has helped the coaches and players greatly by measuring impact and ball flight and educating in this, for golfers, important topic. When I gave feedback on their tests, the TrackMan staff suggested that I should also send in a paper for their blog.

I then thought I should write about the next step after measuring and analyzing the ball flight and club delivery data - how to link clubhead to possible swing actions. I therefore wrote the paper B-plane and the three axis of rotation which shows the link between the clubface and the butt end of the club. When coaches fully understand where the butt should move in order to control the clubface, we can also give more objective feedback to the players.

]]>John HellströmHome2011-11-29T06:44:31+01:00http://web.me.com/johnhellstrom/index_files/58441496984f31b5dc5783f18d19df52-1.html#unique-entry-id-1http://web.me.com/johnhellstrom/index_files/58441496984f31b5dc5783f18d19df52-1.html#unique-entry-id-1SwGT blog.]]>John HellströmHome2011-11-18T20:17:59+01:00http://web.me.com/johnhellstrom/index_files/1fd3034f1aed31353372a5525b1de3dd-0.html#unique-entry-id-0http://web.me.com/johnhellstrom/index_files/1fd3034f1aed31353372a5525b1de3dd-0.html#unique-entry-id-0
The SwGT will write about it at http://www.golf.se/Tavla/Swedish-Golf-Team1/Blogg/.]]>