{"id":141,"date":"2013-02-26T18:45:55","date_gmt":"2013-02-26T17:45:55","guid":{"rendered":"https:\/\/helpingthebesttogetbetter.com\/?p=141"},"modified":"2013-02-26T18:45:55","modified_gmt":"2013-02-26T17:45:55","slug":"not-gifted","status":"publish","type":"post","link":"https:\/\/helpingthebesttogetbetter.com\/?p=141","title":{"rendered":"Not gifted"},"content":{"rendered":"<p>I know a few respected colleagues that have mastered the ability to see things that I never could see.<\/p>\n<p>One of them could see if his high jumper is taking off at an angle of 36.5 or 37.0 degrees, another one can see if a sprinter\u2019s right gluteus medius is firing or his rectus femoris is contracting at the right speed, this while the athlete is moving at 11 meters per second.<\/p>\n<p>Well&#8230;&#8230;.. I can\u2019t &#8230;&#8230;. I am unfortunately not blessed with this visual gifts.<\/p>\n<p>Nor can\u00a0 do I know which physiological system is recovered or not, or to what extend an athlete is tired or stressed or not. The athlete anyhow also could never tell me this to a useful extent, since he\/she does not know it himself\/herself in the first place.<\/p>\n<p>To me the expression \u201clisten to your body\u201d sounds strange, because the body does not speak loud and clearly, but just mumbles something diffuse like: \u201cpain&#8230; chest&#8230;. left\u201d. But that does not tell me if you have a sore pectoralis muscle or a slight myocardial infarction, not does the body tell us the different between a headache caused by lack of caffeine or a pain in the head caused by a brain tumor.<\/p>\n<p>But here is what helped me survive &#8230;&#8230;. technology and common sense (the sense that is less common than you think). One of the things that I use quite a lot is sEMG or surface electromyography. No needles in the muscle, but just simple disposable electrodes on the skin.<\/p>\n<p>Strange, that while the muscle is one of the main targets of our training, very few coaches are using EMG.\u00a0 EMG is mainly used by scientists in research\u00a0 or by physical therapists for rehabilitation in case of injuries.<\/p>\n<p>Now why would EMG be useful you might say. EMG, which to put it simply, measures the electric current running from the motor neuron over the muscle. The higher this current, the more motor unit activity is involved.<\/p>\n<figure id=\"attachment_146\" aria-describedby=\"caption-attachment-146\" style=\"width: 300px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/helpingthebesttogetbetter.com\/?attachment_id=146\" rel=\"attachment wp-att-146\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-146\" alt=\"Nelli Cooman EMG from startblock\" src=\"https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/NC-Oslo-300x291.jpg\" width=\"300\" height=\"291\" srcset=\"https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/NC-Oslo-300x291.jpg 300w, https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/NC-Oslo-1024x995.jpg 1024w, https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/NC-Oslo.jpg 1342w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-146\" class=\"wp-caption-text\">Nelli Cooman EMG from startblock<\/figcaption><\/figure>\n<ul>\n<li>EMG helps me to understand:if the muscle involved in this movement or part of the movement, so if I put electrodes on multiple muscles it tells me <span style=\"text-decoration: underline;\">which<\/span> muscles are involved in the movement<\/li>\n<\/ul>\n<figure id=\"attachment_147\" aria-describedby=\"caption-attachment-147\" style=\"width: 252px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/helpingthebesttogetbetter.com\/?attachment_id=147\" rel=\"attachment wp-att-147\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-147\" alt=\"EMG measurements on golf player Padraig Harrington\" src=\"https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/PH-EMG-252x300.jpg\" width=\"252\" height=\"300\" srcset=\"https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/PH-EMG-252x300.jpg 252w, https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/PH-EMG-861x1024.jpg 861w, https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/PH-EMG.jpg 1008w\" sizes=\"auto, (max-width: 252px) 100vw, 252px\" \/><\/a><figcaption id=\"caption-attachment-147\" class=\"wp-caption-text\">EMG measurements on golf player Padraig Harrington<\/figcaption><\/figure>\n<ul>\n<li>the timing of the recruitment of the muscles in a kinetic chain e.g. which one is recruited first and is there overlap in activity of muscles.<\/li>\n<\/ul>\n<figure id=\"attachment_144\" aria-describedby=\"caption-attachment-144\" style=\"width: 200px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/helpingthebesttogetbetter.com\/?attachment_id=144\" rel=\"attachment wp-att-144\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-144\" alt=\"EMG in sprinter Miquel Jansen at maximum speed\" src=\"https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/MJOslo-200x300.jpg\" width=\"200\" height=\"300\" srcset=\"https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/MJOslo-200x300.jpg 200w, https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/MJOslo-684x1024.jpg 684w, https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/MJOslo.jpg 695w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/a><figcaption id=\"caption-attachment-144\" class=\"wp-caption-text\">EMG in sprinter Miquel Jansen at maximum speed<\/figcaption><\/figure>\n<ul>\n<li>how hard the muscle is working, that is how many motor-units are recruited<\/li>\n<\/ul>\n<figure id=\"attachment_149\" aria-describedby=\"caption-attachment-149\" style=\"width: 300px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/helpingthebesttogetbetter.com\/?attachment_id=149\" rel=\"attachment wp-att-149\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-149\" alt=\"EMG 1 leg isometric knee extension, 10 seconds, A  = vastus lat, B = vastus med.\" src=\"https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/Rene-knee-ext-isometr-10-sec-A-V-lat-B-V-med-300x186.jpg\" width=\"300\" height=\"186\" srcset=\"https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/Rene-knee-ext-isometr-10-sec-A-V-lat-B-V-med-300x186.jpg 300w, https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/Rene-knee-ext-isometr-10-sec-A-V-lat-B-V-med.jpg 1012w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-149\" class=\"wp-caption-text\">EMG 1 leg isometric knee extension, 10 seconds, A = vastus lat, B = vastus med.<\/figcaption><\/figure>\n<ul>\n<li>understand fatigue in muscles through the analysis of the EMG frequency spectrum<\/li>\n<li>EMG helps me to judge the effect of certain exercises, like lots of research has been done on the different effect of different abdominal exercises<\/li>\n<li>EMG in a biofeedback setting could teach the athlete to relax certain muscle groups consciously (EMG biofeedback)<\/li>\n<\/ul>\n<p>EMG in itself is a relatively simple procedure, the processing of the electrical signal is more complex, but offers many opportunities.<\/p>\n<p>EMG can be recorded in the lab as well as on the field or the track, because many systems have the possibility of recording the signal telemetrically.<\/p>\n<p>One of the my favourite uses of EMG is for the monitoring, but also the prediction of hamstring injuries. We developed this simple idea a long time ago.<\/p>\n<p>The protocol is simple: put EMG electrodes on quads and hamstring group (biceps femoris or semimembranosis and semitendinosis). With 4 channel recording one can do this for both legs at the same time.<\/p>\n<p>Now make a countermovement jump (stand straight up, go down, push off and land).<\/p>\n<p>If there is no hamstring problem, one will during the take-off or push-phase see a dominant quadriceps activity (Q) compared to hamstring activity (H).<\/p>\n<figure id=\"attachment_143\" aria-describedby=\"caption-attachment-143\" style=\"width: 300px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/helpingthebesttogetbetter.com\/?attachment_id=143\" rel=\"attachment wp-att-143\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-143\" alt=\"EMG worldclass soccer player, green = rectus fem, blue = biceps fem.\" src=\"https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/EMG-voetballer-hamstring-300x225.jpg\" width=\"300\" height=\"225\" srcset=\"https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/EMG-voetballer-hamstring-300x225.jpg 300w, https:\/\/helpingthebesttogetbetter.com\/wp-content\/uploads\/2013\/02\/EMG-voetballer-hamstring.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-143\" class=\"wp-caption-text\">EMG worldclass soccer player, green = rectus fem, blue = biceps fem.<\/figcaption><\/figure>\n<p>If there is an existing or likely a future hamstring problem, one will find a dominant hamstring activity during take-off!<\/p>\n<p>Our explanation for this phenomenon is that it seems like hamstring is more active during take-off since it tends to inhibit or wants to control or slow down the fast knee extension, as fast knee extension may cause damage to the injury-prone hamstring. This simple protocol has helped me a lot in preventing hamstring injuries in sprinters, by detecting a problem before it turned into a strain or pull.<\/p>\n<p>To satisfy the readers that like to read some more about the use of EMG, here is a very short list.<\/p>\n<ul>\n<li>Cram, J.R; Kasman, G.S: Introduction to electromyography.\u00a0 Aspen Publications Gaithersburg, 1998.<\/li>\n<li>Lamontagne, M; Application of Electromyography in Sports Medicine, in: Puddu, G; Giombini, A; Selvanetti, A: Rehabilitation of Sports Injuries, Chapter 4, Springer, 2001, pg. 31-42.<\/li>\n<li>Masso, N; Rey, F; Romero, D; Gual, G; Costa, L; German, A: Surface electromyography applications\u00a0 in the sport; Apunts, 45(165),2010, pg.121-130.<\/li>\n<li>Felici, F: Neuromuscular responses to exercise investigated through surface EMG; J. Electromyogr Kinesiol 16, 2006, pg.578-585.<\/li>\n<li>Mileva, K.N; Morgan, J; Bowtell, J: Differentiation of power and endurance athletes based on their muscle fatigability assessed by new spectral electromyographic indices; J. Sports Sci. Vol.27, No.6, 2009, pg.611-623.<\/li>\n<li>Farina, D; Merletii, R; Enoka, R.M: The extraction of neural strategies from the surface EMG; J.Appl.Physiol. 96, 2004, pg.1486-1495.<\/li>\n<li>Escamilla, R.F; Babb, E; DeWitt, R; Jew, P; Kelleher, P; Burnham, T; Busch, J; D\u2019Anna, K; Mowbray, R; Imamura, R.T:\u00a0 Electromyographic Analysis of Traditional and Nontraditional Abdominal Exercises: Implications for Rehabilitation and Training; Physical Therapy, 86, 2006, pg.656-671.<\/li>\n<li>Basics of Surface Electromyography. Applied to Physical rehabilitation and Biomechanics, Thought Technology, Montreal, Feb 2009, 48 pgs.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>I know a few respected colleagues that have mastered the ability to see things that I never could see. One of them could see if his high jumper is taking off at an angle of &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-141","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/helpingthebesttogetbetter.com\/index.php?rest_route=\/wp\/v2\/posts\/141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/helpingthebesttogetbetter.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/helpingthebesttogetbetter.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/helpingthebesttogetbetter.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/helpingthebesttogetbetter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=141"}],"version-history":[{"count":3,"href":"https:\/\/helpingthebesttogetbetter.com\/index.php?rest_route=\/wp\/v2\/posts\/141\/revisions"}],"predecessor-version":[{"id":152,"href":"https:\/\/helpingthebesttogetbetter.com\/index.php?rest_route=\/wp\/v2\/posts\/141\/revisions\/152"}],"wp:attachment":[{"href":"https:\/\/helpingthebesttogetbetter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/helpingthebesttogetbetter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/helpingthebesttogetbetter.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}