{"id":10466,"date":"2020-10-27T11:07:29","date_gmt":"2020-10-27T11:07:29","guid":{"rendered":"https:\/\/revista-apunts.com\/?p=10466"},"modified":"2020-12-17T09:28:23","modified_gmt":"2020-12-17T09:28:23","slug":"frequencia-cardiaca-en-temps-real-i-per-telemetriaper-a-aplicacions-aquatiques","status":"publish","type":"post","link":"https:\/\/revista-apunts.com\/ca\/frequencia-cardiaca-en-temps-real-i-per-telemetriaper-a-aplicacions-aquatiques\/","title":{"rendered":"Freq\u00fc\u00e8ncia card\u00edaca en temps real i per telemetria\nper a aplicacions aqu\u00e0tiques"},"content":{"rendered":"\n

Resum<\/h2>\n\n\n
\n

El registre de la freq\u00fc\u00e8ncia card\u00edaca (FC) \u00e9s un par\u00e0metre molt \u00fatil per al control i la planificaci\u00f3 de l’entrenament esportiu. AI mercat hi ha diversos sistemes de cardiotac\u00f2metres miniatura dissenyats i fabricats per a \u00fas en activitats fisicoesportives. Tots es col\u00b7loquen al pit mitjan\u00e7ant una cinta el\u00e0stica, que proporciona una fixaci\u00f3 insuficient per a la nataci\u00f3, especialment en els viratges, aix\u00f2 obliga a utilitzar cinta adhesiva o altres sistemes de fixaci\u00f3 “cruents”. El sistema desenvolupat a l’Institut de Biomec\u00e0nica de Val\u00e8ncia (IBV) permet registrar enviar telem\u00e8tricament la freq\u00fc\u00e8ncia card\u00edaca a un ordinador personal on es pot mostrar en temps real i\/o ser emmagatzemada per a posterior an\u00e0lisi. D’aquesta manera, l’entrenador pot controlar la intensitat d’un entrenament i transmetre un feedback gaireb\u00e9 immediat al nedador. El sistema consisteix en una pin\u00e7a col\u00b7locada al l\u00f2bul de l’orella amb un emissor de llum vermella (LED) i una resist\u00e8ncia depenent de la llum (LDR). La llum vermella passa a trav\u00e9s del l\u00f2bul i \u00e9s rebuda pel LDR. El fonament del sistema consisteix que l’atenuaci\u00f3 de la Ilum vermella en el l\u00f2bul de l’orella est\u00e0 associada amb canvis en el contingut de la sang oxigenada, m\u00e8tode anomenat “oximetria”. Per al sistema de telemetria es fa servir un modulador de senyal basat en un oscil\u00b7lador controlat per tensi\u00f3 (VCO) i un circuit comercial h\u00edbrid per a la transmissi\u00f3. El c\u00e0lcul de la freq\u00fc\u00e8ncia card\u00edaca en temps real \u00e9s possible gr\u00e0cies a la utilitzaci\u00f3 d’un filtre digital i al desenvolupament d’un algoritme per reduir el soroll.<\/p>\n<\/div>\n\n

Paraules clau:<\/strong> entrenament<\/span>, frequ\u0308\u00e8ncia card\u00edaca<\/span>, nataci\u00f3<\/span>, oximetr\u00eda<\/span>, transmissi\u00f3 electromagn\u00e8tica<\/span><\/p> <\/div> \n","protected":false},"excerpt":{"rendered":"

Resum El registre de la freq\u00fc\u00e8ncia card\u00edaca (FC) \u00e9s un par\u00e0metre molt \u00fatil per al control i la planificaci\u00f3 de l’entrenament esportiu. AI mercat hi ha diversos sistemes de cardiotac\u00f2metres miniatura dissenyats i fabricats per a \u00fas en activitats fisicoesportives. Tots es col\u00b7loquen al pit mitjan\u00e7ant una cinta el\u00e0stica, que proporciona una fixaci\u00f3 insuficient per […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_editorskit_title_hidden":false,"_editorskit_reading_time":1,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","inline_featured_image":false,"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":"","footnotes":""},"categories":[8509],"tags":[3902,532,3892,1349,4286],"author_meta":{"display_name":"doc_inefc","author_link":"https:\/\/revista-apunts.com\/ca\/author\/doc_inefc\/"},"featured_img":null,"coauthors":[],"tax_additional":{"categories":{"linked":["Apunts per al segle XXI<\/a>"],"unlinked":["Apunts per al segle XXI<\/span>"]},"tags":{"linked":["entrenament<\/a>","frequ\u0308\u00e8ncia card\u00edaca<\/a>","nataci\u00f3<\/a>","oximetr\u00eda<\/a>","transmissi\u00f3 electromagn\u00e8tica<\/a>"],"unlinked":["entrenament<\/span>","frequ\u0308\u00e8ncia card\u00edaca<\/span>","nataci\u00f3<\/span>","oximetr\u00eda<\/span>","transmissi\u00f3 electromagn\u00e8tica<\/span>"]}},"comment_count":"0","relative_dates":{"created":"Posted 6 anys ago","modified":"Updated 5 anys ago"},"absolute_dates":{"created":"Posted on 27 octubre 2020","modified":"Updated on 17 desembre 2020"},"absolute_dates_time":{"created":"Posted on 27 octubre 2020 11:07","modified":"Updated on 17 desembre 2020 09:28"},"featured_img_caption":"","series_order":"","_links":{"self":[{"href":"https:\/\/revista-apunts.com\/ca\/wp-json\/wp\/v2\/posts\/10466\/"}],"collection":[{"href":"https:\/\/revista-apunts.com\/ca\/wp-json\/wp\/v2\/posts\/"}],"about":[{"href":"https:\/\/revista-apunts.com\/ca\/wp-json\/wp\/v2\/types\/post\/"}],"author":[{"embeddable":true,"href":"https:\/\/revista-apunts.com\/ca\/wp-json\/wp\/v2\/users\/1\/"}],"replies":[{"embeddable":true,"href":"https:\/\/revista-apunts.com\/ca\/wp-json\/wp\/v2\/comments\/?post=10466"}],"version-history":[{"count":1,"href":"https:\/\/revista-apunts.com\/ca\/wp-json\/wp\/v2\/posts\/10466\/revisions\/"}],"predecessor-version":[{"id":34587,"href":"https:\/\/revista-apunts.com\/ca\/wp-json\/wp\/v2\/posts\/10466\/revisions\/34587\/"}],"wp:attachment":[{"href":"https:\/\/revista-apunts.com\/ca\/wp-json\/wp\/v2\/media\/?parent=10466"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/revista-apunts.com\/ca\/wp-json\/wp\/v2\/categories\/?post=10466"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/revista-apunts.com\/ca\/wp-json\/wp\/v2\/tags\/?post=10466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}