The aim of this study is to analyse technique in weight-lifters at international level, following the curves of vertical forces. This work, with the help of a strength platform, and a system of analysis of two-dimensional video, tracks down the different critical points that contribute to these curves throughout the lift and jerk in weight-lifting. Six international weight-lifters have each taken three lift and jerk tests, using weights at 70%, 80% and 90% of their best lifts. In the course of the lift we noticed three critical points: two maximum (7-71, F71) and (T,3, F,3) separated by a minimum (T72, F72). These points express from a cinematic and dynamic plane, the transitions of the technical phases. In the calculated data, as a whole, two variables of the weight-lifting bar system (1-73-1-,1 and F71\/F70) and four variables studied on the cinematic video of the bar (maximum height, maximum height\/stature, maximum height\/leg length and average speed) show significant differences in the tests throughout the Wicolson tests. The use of a matrix of correlations (Spearman test), together with a matrix of probabilities, shows a high correlation between the different points. It is necessary to underline the importance of the critical point ((-71, F71) with respect to the other points and their repercussions on the cinematic variables of the bar (r=0.83, P<0.01) for F71 and DV maximum at 90% of maximum weight. The first summit of F71 force is reached more quickly and the force relations lessen (to be exact F71\/ F70) respectively the same, to 1.65\u00b10.10, then I.54\u00b10.08 at 70% and 80% of the maximum. The decrease in the force relation F71\/ Fz2 and the increase of F73\/ F71, with respect to the cinematic variables of the bar, are significative of weight-lifting possibilities.<\/p>\n\n\n","protected":false},"excerpt":{"rendered":"
Abstract The aim of this study is to analyse technique in weight-lifters at international level, following the curves of vertical forces. This work, with the help of a strength platform, and a system of analysis of two-dimensional video, tracks down the different critical points that contribute to these curves throughout the lift and jerk in […]<\/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":[8510],"tags":[],"author_meta":{"display_name":"doc_inefc","author_link":"https:\/\/revista-apunts.com\/en\/author\/doc_inefc\/"},"featured_img":null,"coauthors":[],"tax_additional":{"categories":{"linked":["Apunts for the XXI Century<\/a>"],"unlinked":["Apunts for the XXI Century<\/span>"]}},"comment_count":"0","relative_dates":{"created":"Posted 5 years ago","modified":"Updated 5 years ago"},"absolute_dates":{"created":"Posted on 27 October 2020","modified":"Updated on 17 December 2020"},"absolute_dates_time":{"created":"Posted on 27 October 2020 11:47","modified":"Updated on 17 December 2020 10:02"},"featured_img_caption":"","series_order":"","_links":{"self":[{"href":"https:\/\/revista-apunts.com\/en\/wp-json\/wp\/v2\/posts\/12536\/"}],"collection":[{"href":"https:\/\/revista-apunts.com\/en\/wp-json\/wp\/v2\/posts\/"}],"about":[{"href":"https:\/\/revista-apunts.com\/en\/wp-json\/wp\/v2\/types\/post\/"}],"author":[{"embeddable":true,"href":"https:\/\/revista-apunts.com\/en\/wp-json\/wp\/v2\/users\/1\/"}],"replies":[{"embeddable":true,"href":"https:\/\/revista-apunts.com\/en\/wp-json\/wp\/v2\/comments\/?post=12536"}],"version-history":[{"count":1,"href":"https:\/\/revista-apunts.com\/en\/wp-json\/wp\/v2\/posts\/12536\/revisions\/"}],"predecessor-version":[{"id":34603,"href":"https:\/\/revista-apunts.com\/en\/wp-json\/wp\/v2\/posts\/12536\/revisions\/34603\/"}],"wp:attachment":[{"href":"https:\/\/revista-apunts.com\/en\/wp-json\/wp\/v2\/media\/?parent=12536"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/revista-apunts.com\/en\/wp-json\/wp\/v2\/categories\/?post=12536"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/revista-apunts.com\/en\/wp-json\/wp\/v2\/tags\/?post=12536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}