{"id":29661,"date":"2014-12-01T00:00:00","date_gmt":"2018-12-03T22:21:54","guid":{"rendered":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/effect-of-diet-composition-on-acid-base-balance-in-adolescents\/"},"modified":"2018-12-03T23:21:54","modified_gmt":"2018-12-03T22:21:54","slug":"effect-of-diet-composition-on-acid-base-balance-in-adolescents","status":"publish","type":"resume","link":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/effect-of-diet-composition-on-acid-base-balance-in-adolescents\/","title":{"rendered":"Effect of diet composition on acid-base balance in adolescents, young adults and elderly at rest and during exercise."},"content":{"rendered":"<p><strong>Background:<\/strong><\/p>\n<p>Diets rich in animal protein and cereal grains and deficient in vegetables and fruits may cause low-grade metabolic acidosis, which may impact exercise and health. We hypothesized that (1) a normal-protein diet with high amount of vegetables and fruits (HV) induces more alkaline acid-base balance compared with a high-protein diet with no vegetables and fruits (HP) and (2) diet composition has a greater impact on acid-base balance in the elderly (ELD).<\/p>\n<p><strong>Subjects\/methods:<\/strong><\/p>\n<p>In all, 12-15 (adolescents (ADO)), 25-35 (young adults (YAD)) and 60-75 (ELD)-year-old male and female subjects (n=88) followed a 7-day HV and a 7-day HP in a randomized order and at the end performed incremental cycle ergometer tests. We investigated the effect of diet composition and age on capillary (c-pH) and urine pH (u-pH), strong ion difference (SID), partial pressure of carbon dioxide (pCO<sub>2<\/sub>) and total concentration of weak acids (A<sub>tot<\/sub>). Linear regression analysis was used to examine the contribution of SID, pCO<sub>2<\/sub> and A<sub>tot<\/sub> to c-pH.<\/p>\n<p><strong>Results:<\/strong><\/p>\n<p>In YAD and ELD, c-pH (P&#10877;0.038) and u-pH (P&lt;0.001) were higher at rest after HV compared with HP. During cycling, c-pH was higher (P&#10877;0.034) after HV compared with HP at submaximal workloads in YAD and at 75% of VO<sub>2<\/sub>max (maximal oxygen consumption) in ELD. The contribution of SID, pCO<sub>2<\/sub> and A<sub>tot<\/sub> to c-pH varied widely. Gender effects or changes in acid-base balance of ADO were not detected.<\/p>\n<p><strong>Conclusions:<\/strong><\/p>\n<p>A high intake of vegetables and fruits increases blood and u-pH in YAD and ELD. ELD compared with younger persons may be more sensitive for the diet-induced acid-base changes.<\/p>\n","protected":false},"template":"","mots_cles":[],"class_list":["post-29661","resume","type-resume","status-publish","hentry"],"acf":{"adresse":"Department of Biology of Physical Activity, University of Jyv\u00e4skyl\u00e4, Jyv\u00e4skyl\u00e4, Finland.","annee":"2014","mois":"12","numero":"","page":"","auteurs":[{"ID":29652,"post_author":"0","post_date":"2018-12-03 23:21:49","post_date_gmt":"2018-12-03 22:21:49","post_content":"","post_title":"E-M Hietavala","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"e-m-hietavala","to_ping":"","pinged":"","post_modified":"2018-12-03 23:21:49","post_modified_gmt":"2018-12-03 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Hulmi","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"j-j-hulmi","to_ping":"","pinged":"","post_modified":"2018-12-03 23:21:50","post_modified_gmt":"2018-12-03 22:21:50","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/j-j-hulmi\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":29655,"post_author":"0","post_date":"2018-12-03 23:21:51","post_date_gmt":"2018-12-03 22:21:51","post_content":"","post_title":"H Suominen","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"h-suominen","to_ping":"","pinged":"","post_modified":"2018-12-03 23:21:51","post_modified_gmt":"2018-12-03 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Puurtinen","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"r-puurtinen","to_ping":"","pinged":"","post_modified":"2018-12-03 23:21:52","post_modified_gmt":"2018-12-03 22:21:52","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/r-puurtinen\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":29658,"post_author":"0","post_date":"2018-12-03 23:21:53","post_date_gmt":"2018-12-03 22:21:53","post_content":"","post_title":"H Sel\u00e4nne","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"h-selanne","to_ping":"","pinged":"","post_modified":"2018-12-03 23:21:53","post_modified_gmt":"2018-12-03 22:21:53","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/h-selanne\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":29659,"post_author":"0","post_date":"2018-12-03 23:21:53","post_date_gmt":"2018-12-03 22:21:53","post_content":"","post_title":"H Kainulainen","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"h-kainulainen","to_ping":"","pinged":"","post_modified":"2018-12-03 23:21:53","post_modified_gmt":"2018-12-03 22:21:53","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/h-kainulainen\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":29660,"post_author":"0","post_date":"2018-12-03 23:21:54","post_date_gmt":"2018-12-03 22:21:54","post_content":"","post_title":"A A Mero","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"a-a-mero","to_ping":"","pinged":"","post_modified":"2018-12-03 23:21:54","post_modified_gmt":"2018-12-03 22:21:54","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/a-a-mero\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"}],"sources":[{"ID":1262,"post_author":"0","post_date":"2018-12-03 15:57:47","post_date_gmt":"2018-12-03 14:57:47","post_content":"","post_title":"European journal of clinical nutrition","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"european-journal-of-clinical-nutrition","to_ping":"","pinged":"","post_modified":"2018-12-03 15:57:47","post_modified_gmt":"2018-12-03 14:57:47","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/source\/european-journal-of-clinical-nutrition\/","menu_order":0,"post_type":"source","post_mime_type":"","comment_count":"0","filter":"raw"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.6 (Yoast SEO v23.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Effect of diet composition on acid-base balance in adolescents, young adults and elderly at rest and during exercise. - Aprifel<\/title>\n<meta name=\"description\" content=\"Effect of diet composition on acid-base balance in adolescents, young adults and elderly at rest and during exercise. - Aprifel\" \/>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Effect of diet composition on acid-base balance in adolescents, young adults and 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