{"id":609,"date":"2018-07-17T16:07:08","date_gmt":"2018-07-17T23:07:08","guid":{"rendered":"http:\/\/www.michaelkeating.com\/wordpress\/?p=609"},"modified":"2018-08-11T14:09:35","modified_gmt":"2018-08-11T21:09:35","slug":"iwf-robi-coefficients","status":"publish","type":"post","link":"https:\/\/www.michaelkeating.com\/wordpress\/2018\/07\/17\/iwf-robi-coefficients\/","title":{"rendered":"IWF Robi Coefficients"},"content":{"rendered":"

The International Weightlifting Federation<\/a> updated its Robi Point Calculator<\/a>, but I could not find the coefficients they used for them. The formula for calculation of Robi Points is as follows:<\/p>\n

Robi Points = A x Totalb<\/sup>
\n Where A = constant of the bodyweight category
\n and b = constant of the progressivity
\nFactors defining “progressivity”:
\nMax. Points for the World Record = 1000
\nWR = 50%
\nPoints = 10%
\n(50% of the WR gets 10% of the max 1000 Points)<\/span>1<\/sup><\/a><\/span><\/p>\n

By back-calculation, the A and b coefficients for the new (2018) IWF weight classes are as follows:<\/p>\n

b = 3.3219281 (This should always be [log(10)\/log(2)] using any base of logrithm.)<\/div>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Women<\/th>\n<\/tr>\n
Class<\/th>\nWorld Record<\/th>\nA<\/th>\n<\/tr>\n
45<\/td>\n191<\/p>\n0.00002645886266<\/td>\n<\/tr>\n
49<\/td>\n203<\/p>\n0.00002161046356<\/td>\n<\/tr>\n
55<\/td>\n221<\/p>\n0.00001629661631<\/td>\n<\/tr>\n
59<\/td>\n232<\/p>\n0.00001386816515<\/td>\n<\/tr>\n
64<\/td>\n245<\/p>\n0.00001157076467<\/td>\n<\/tr>\n
71<\/td>\n261<\/p>\n0.00000937764965<\/td>\n<\/tr>\n
76<\/td>\n272<\/p>\n0.000008175929892<\/td>\n<\/tr>\n
81<\/td>\n283<\/p>\n0.000007167071831<\/td>\n<\/tr>\n
87<\/td>\n294<\/p>\n0.000006314335523<\/td>\n<\/tr>\n
+87<\/td>\n320<\/p>\n0.000004765098749<\/td>\n<\/tr>\n<\/table>\n
b = 3.3219281 (This should always be [log(10)\/log(2)] using any base of logrithm.)<\/div>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Men<\/th>\n<\/tr>\n
Class<\/th>\nWorld Record<\/th>\nA<\/th>\n<\/tr>\n
55<\/td>\n293<\/p>\n0.000006386209266<\/td>\n<\/tr>\n
61<\/td>\n312<\/p>\n0.000005183197783<\/td>\n<\/tr>\n
67<\/td>\n331<\/p>\n0.000004259048574<\/td>\n<\/tr>\n
73<\/td>\n348<\/p>\n0.000003606255594<\/td>\n<\/tr>\n
81<\/td>\n368<\/p>\n0.000002995284257<\/td>\n<\/tr>\n
89<\/td>\n387<\/p>\n0.0000025340212<\/td>\n<\/tr>\n
96<\/td>\n401<\/p>\n0.000002251860969<\/td>\n<\/tr>\n
102<\/td>\n412<\/p>\n0.000002058256392<\/td>\n<\/tr>\n
109<\/td>\n424<\/p>\n0.000001871024806<\/td>\n<\/tr>\n
+109<\/td>\n453<\/p>\n0.000001501871444<\/td>\n<\/tr>\n<\/table>\n<\/a>","protected":false},"excerpt":{"rendered":"

The International Weightlifting Federation updated its Robi Point Calculator, but I could not find the coefficients they used for them. The formula for calculation of Robi Points is as follows: Robi Points = A x Totalb Where A = constant of the bodyweight category and b = constant of the progressivity Factors defining “progressivity”: Max….<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[106],"tags":[111,110,109,107,112,113,114,108,61],"class_list":["post-609","post","type-post","status-publish","format-standard","hentry","category-weightlifting","tag-clean","tag-clean-jerk","tag-clean-and-jerk","tag-iwf","tag-jerk","tag-robi","tag-robi-points","tag-snatch","tag-weightlifting"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2Q7kW-9P","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.michaelkeating.com\/wordpress\/wp-json\/wp\/v2\/posts\/609","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.michaelkeating.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.michaelkeating.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.michaelkeating.com\/wordpress\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.michaelkeating.com\/wordpress\/wp-json\/wp\/v2\/comments?post=609"}],"version-history":[{"count":19,"href":"https:\/\/www.michaelkeating.com\/wordpress\/wp-json\/wp\/v2\/posts\/609\/revisions"}],"predecessor-version":[{"id":636,"href":"https:\/\/www.michaelkeating.com\/wordpress\/wp-json\/wp\/v2\/posts\/609\/revisions\/636"}],"wp:attachment":[{"href":"https:\/\/www.michaelkeating.com\/wordpress\/wp-json\/wp\/v2\/media?parent=609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.michaelkeating.com\/wordpress\/wp-json\/wp\/v2\/categories?post=609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.michaelkeating.com\/wordpress\/wp-json\/wp\/v2\/tags?post=609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}