{"id":3585,"date":"2024-04-16T10:52:28","date_gmt":"2024-04-16T14:52:28","guid":{"rendered":"https:\/\/glennpaulley.ca\/curling\/?p=3585"},"modified":"2025-01-17T10:18:56","modified_gmt":"2025-01-17T15:18:56","slug":"instrumented-curling-brushes-and-the-curlsmart-brush","status":"publish","type":"post","link":"https:\/\/glennpaulley.ca\/curling\/2024\/04\/16\/instrumented-curling-brushes-and-the-curlsmart-brush\/","title":{"rendered":"Instrumented Curling Brushes and the CurlSmart brush"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3585\" class=\"elementor elementor-3585\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a899aee e-grid e-con-boxed e-con e-parent\" data-id=\"a899aee\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-74ab81a elementor-widget elementor-widget-text-editor\" data-id=\"74ab81a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>I frequently receive questions about the instrumented brush that I use when testing athletes. An instrumented brush is a &#8220;game-changer&#8221; in the coaching of the sport of curling, because the effectiveness of an athlete cannot be determined statically (for example, by using a <a href=\"https:\/\/glennpaulley.ca\/curling\/2024\/04\/03\/can-i-use-a-bathroom-scale-to-test-brushing-performance\/\">bathroom scale<\/a>). Rather, brushing involves movement, and an instrumented brush is able to measure various characteristics of an athlete&#8217;s brushing profile to give essential guidance to a coach to help improve their technique.\u00a0<\/p><p>The instrumented brush that I use is a prototype developed by <a href=\"https:\/\/seniorengineers.ca\/csse\/john-patrick-newhook\/\">Dr. John Newhook<\/a> of <a href=\"https:\/\/www.dal.ca\/faculty\/engineering\/about\/deans_message.html\">Dalhousie University<\/a>, and is described in some detail in the <a href=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/Instrumented-Curling-Brooms.pdf\">article<\/a> shown at right. In a nutshell, the brush captures (via a strain gauge) the vertical force generated through the handle at a sampling rate of 100 Hz. The force data from the brush is transmitted to a laptop Windows computer running proprietary software that (a) converts the values from the brush into &#8220;forces&#8221; in kilograms, for better understanding by the athlete, and (b) analyzes the signal&#8217;s peaks and valleys through each stroke to determine the athlete&#8217;s stroke rate.\u00a0 \u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8652f79 elementor-widget elementor-widget-image\" data-id=\"8652f79\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/Instrumented-Curling-Brooms.pdf\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"940\" height=\"1024\" src=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/InstrumentedCurlingBrooms-940x1024.jpg\" class=\"attachment-large size-large wp-image-3582\" alt=\"\" srcset=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/InstrumentedCurlingBrooms-940x1024.jpg 940w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/InstrumentedCurlingBrooms-275x300.jpg 275w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/InstrumentedCurlingBrooms-768x837.jpg 768w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/InstrumentedCurlingBrooms-1410x1536.jpg 1410w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/InstrumentedCurlingBrooms.jpg 1568w\" sizes=\"(max-width: 940px) 100vw, 940px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c3f9351 e-grid e-con-boxed e-con e-parent\" data-id=\"c3f9351\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-599161b elementor-widget elementor-widget-image\" data-id=\"599161b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"700\" height=\"587\" src=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/Calibration_resized.png\" class=\"attachment-large size-large wp-image-3583\" alt=\"\" srcset=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/Calibration_resized.png 700w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/Calibration_resized-300x252.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-04b2cdd elementor-widget elementor-widget-text-editor\" data-id=\"04b2cdd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>To ensure the brush&#8217;s accuracy we periodically calibrate the brush to a force plate in the <a href=\"https:\/\/www.researchgate.net\/lab\/BEN-Lab-Michel-Ladouceur\">BEN Laboratory<\/a> in the School of Health and Human Performance at Dalhousie University, which is managed by Assistant Professor <a href=\"https:\/\/www.researchgate.net\/profile\/Michel-Ladouceur?_sg=9asPqEli4xffSUYjUdw6pTq3OVEsRcZM4L6Pfhd1QAi57U5ICyh--lBH2bDeTyLfjwmGp746Pe9Ml7PPqNxBGg&amp;_tp=eyJjb250ZXh0Ijp7ImZpcnN0UGFnZSI6InByb2ZpbGUiLCJwYWdlIjoiX2RpcmVjdCJ9fQ\">Dr. Michel Ladouceur<\/a> and his research teams. Fortunately, we have two nearly-identical CurlSmart brushes so that we can not only compare each brush to the force plate&#8217;s output, but compare the outputs of each brush head-to-head. Once we confirm that the brushes are calibrated (typically to an error of approximately 2-3%) we can then conduct additional on-ice experiments with both brushes to establish confidence in their accuracy.\u00a0\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ec2a3ed e-flex e-con-boxed e-con e-parent\" data-id=\"ec2a3ed\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-49158b9 e-con-full e-flex e-con e-child\" data-id=\"49158b9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-50acc04 elementor-widget elementor-widget-image\" data-id=\"50acc04\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/IMG_0558_reduced-1024x768.jpg\" class=\"attachment-large size-large wp-image-4621\" alt=\"\" srcset=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/IMG_0558_reduced-1024x768.jpg 1024w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/IMG_0558_reduced-300x225.jpg 300w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/IMG_0558_reduced-768x576.jpg 768w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/IMG_0558_reduced-1536x1152.jpg 1536w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/IMG_0558_reduced.jpg 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a679d07 e-con-full e-flex e-con e-child\" data-id=\"a679d07\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1e8a182 elementor-widget elementor-widget-image\" data-id=\"1e8a182\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/IMG_0554_reduced-1024x768.jpg\" class=\"attachment-large size-large wp-image-4620\" alt=\"\" srcset=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/IMG_0554_reduced-1024x768.jpg 1024w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/IMG_0554_reduced-300x225.jpg 300w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/IMG_0554_reduced-768x576.jpg 768w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/IMG_0554_reduced-1536x1152.jpg 1536w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/IMG_0554_reduced.jpg 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>I frequently receive questions about the instrumented brush that I use when testing athletes. An instrumented brush is a &#8220;game-changer&#8221; [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3584,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mo_disable_npp":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ngg_post_thumbnail":0,"footnotes":""},"categories":[326,233,3],"tags":[426,423,425,424,322,427],"class_list":["post-3585","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-brushing","category-coaching","category-equipment","tag-ben-lab","tag-curlsmart-brush","tag-dalhousie-university","tag-instrumented-curling-brooms","tag-john-newhook","tag-michel-ladouceur"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Instrumented Curling Brushes and the CurlSmart brush - Throwing Rocks<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/glennpaulley.ca\/curling\/2024\/04\/16\/instrumented-curling-brushes-and-the-curlsmart-brush\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Instrumented Curling Brushes and the CurlSmart brush - Throwing Rocks\" \/>\n<meta property=\"og:description\" content=\"I frequently receive questions about the instrumented brush that I use when testing athletes. An instrumented brush is a &#8220;game-changer&#8221; [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/glennpaulley.ca\/curling\/2024\/04\/16\/instrumented-curling-brushes-and-the-curlsmart-brush\/\" \/>\n<meta property=\"og:site_name\" content=\"Throwing Rocks\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-16T14:52:28+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-01-17T15:18:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/04\/IMG_6775-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1707\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Glenn Paulley\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@gpaulley\" \/>\n<meta name=\"twitter:site\" content=\"@gpaulley\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Glenn Paulley\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/glennpaulley.ca\\\/curling\\\/2024\\\/04\\\/16\\\/instrumented-curling-brushes-and-the-curlsmart-brush\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/glennpaulley.ca\\\/curling\\\/2024\\\/04\\\/16\\\/instrumented-curling-brushes-and-the-curlsmart-brush\\\/\"},\"author\":{\"name\":\"Glenn Paulley\",\"@id\":\"https:\\\/\\\/glennpaulley.ca\\\/curling\\\/#\\\/schema\\\/person\\\/685139de4bb63ebef36d1958de3b2b96\"},\"headline\":\"Instrumented Curling Brushes and the CurlSmart brush\",\"datePublished\":\"2024-04-16T14:52:28+00:00\",\"dateModified\":\"2025-01-17T15:18:56+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/glennpaulley.ca\\\/curling\\\/2024\\\/04\\\/16\\\/instrumented-curling-brushes-and-the-curlsmart-brush\\\/\"},\"wordCount\":293,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/glennpaulley.ca\\\/curling\\\/#\\\/schema\\\/person\\\/685139de4bb63ebef36d1958de3b2b96\"},\"image\":{\"@id\":\"https:\\\/\\\/glennpaulley.ca\\\/curling\\\/2024\\\/04\\\/16\\\/instrumented-curling-brushes-and-the-curlsmart-brush\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/glennpaulley.ca\\\/curling\\\/wp-content\\\/uploads\\\/2024\\\/04\\\/IMG_6775-scaled.jpg\",\"keywords\":[\"BEN Lab\",\"CurlSmart brush\",\"Dalhousie University\",\"Instrumented Curling Brooms\",\"John Newhook\",\"Michel Ladouceur\"],\"articleSection\":[\"Brushing\",\"Coaching\",\"Equipment\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/glennpaulley.ca\\\/curling\\\/2024\\\/04\\\/16\\\/instrumented-curling-brushes-and-the-curlsmart-brush\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/glennpaulley.ca\\\/curling\\\/2024\\\/04\\\/16\\\/instrumented-curling-brushes-and-the-curlsmart-brush\\\/\",\"url\":\"https:\\\/\\\/glennpaulley.ca\\\/curling\\\/2024\\\/04\\\/16\\\/instrumented-curling-brushes-and-the-curlsmart-brush\\\/\",\"name\":\"Instrumented Curling Brushes and the CurlSmart brush - 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