



{"id":3495,"date":"2011-09-18T13:50:00","date_gmt":"2011-09-18T11:50:00","guid":{"rendered":"http:\/\/www.largeur.com\/?p=3495"},"modified":"2017-07-12T11:29:33","modified_gmt":"2017-07-12T09:29:33","slug":"etude","status":"publish","type":"post","link":"https:\/\/largeur.com\/?p=3495","title":{"rendered":"La taille des Suisses plafonne"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/large180911.jpg\" alt=\"large180911.jpg\" title=\"large180911.jpg\" width=\"468\" height=\"302\" border=\"0\" \/>\u00abQue tu as grandi! Tu vas bient\u00f4t d\u00e9passer ton papa.\u00bb Cette remarque enfantine sera-t-elle caduque d\u2019ici \u00e0 quelques ann\u00e9es? On peut le craindre. Si, depuis plus de cent ans, la taille des Suisses n\u2019a cess\u00e9 d\u2019augmenter, elle stagne d\u00e9sormais. C\u2019est le r\u00e9sultat \u00e9tonnant d\u2019une \u00e9tude scientifique men\u00e9e par Kaspar Staub, chercheur au Centre de m\u00e9decine \u00e9volutive de l\u2019Universit\u00e9 de Zurich, et ses coll\u00e8gues de l\u2019Universit\u00e9 de Berne.<\/p>\n<p>Les scientifiques ont analys\u00e9 la taille des recrues militaires lors des 130 derni\u00e8res ann\u00e9es. En effet, d\u00e8s leur arriv\u00e9e en caserne, les soldats sont mesur\u00e9s, non seulement pour mettre sur leurs \u00e9paules des v\u00eatements ad\u00e9quats, mais pour recueillir des donn\u00e9es \u00e0 l\u2019intention de l\u2019Office f\u00e9d\u00e9ral de la statistique.<\/p>\n<p>Du c\u00f4t\u00e9 des femmes, de tels chiffres ne sont pas disponibles. Les chercheurs doivent se contenter des donn\u00e9es qui figurent sur les passeports, les renseignements relatifs aux prisonni\u00e8res ou aux rares volontaires au sein de l\u2019arm\u00e9e. Une \u00e9volution en parall\u00e8le des tailles des deux sexes est n\u00e9anmoins observ\u00e9e.<\/p>\n<p>Reste que la constance des donn\u00e9es fournies par l\u2019arm\u00e9e suisse est unique au monde &#8212; dans d\u2019autres pays des changements politiques ou des modifications de l\u2019\u00e2ge de recrutement rendent difficiles les comparaisons entre les ann\u00e9es &#8212; ce qui rend leur \u00e9tude particuli\u00e8rement enrichissante.<\/p>\n<p>En 2009, les hommes suisses mesuraient en moyenne 178,2 centim\u00e8tres, soit 14,9 centim\u00e8tres de plus que cent trente ans plus t\u00f4t. De quoi assimiler la croissance de la taille \u00e0 une sorte de loi naturelle: g\u00e9n\u00e9ration apr\u00e8s g\u00e9n\u00e9ration, les enfants sont plus grands que leurs parents. En fait, il n\u2019en est rien.<\/p>\n<p>L\u2019\u00e9tude, publi\u00e9e en juillet dernier dans Swiss Medical Weekly, montre que de 1992 \u00e0 2009, la taille des recrues n\u2019a cr\u00fb que de 7 millim\u00e8tres. Il ne s\u2019est donc pas pass\u00e9 grand-chose pour les natifs des ann\u00e9es allant de 1973 \u00e0 1990. Comment expliquer ce ph\u00e9nom\u00e8ne de stagnation? <\/p>\n<p>\u00abPour la premi\u00e8re fois, un plafonnement a incontestablement lieu. Mais nous ne savons pas s\u2019il est passager, d\u00e9finitif ou si, pourquoi pas, une r\u00e9gression peut se profiler\u00bb, \u00e9crivent les chercheurs.<\/p>\n<p>Car, l\u2019\u00e9volution de la taille humaine n\u2019a pas toujours rim\u00e9 avec croissance. Pline l\u2019Ancien, au Ier si\u00e8cle, \u00e9crivait: \u00abLe genre humain devient partout de plus en plus petit (&#8230;). Rarement les enfants sont plus grands que leurs p\u00e8res.\u00bb<\/p>\n<p>En 1718, un acad\u00e9micien fran\u00e7ais, Jean Henrion, pr\u00e9tendit m\u00eame pouvoir, \u00e0 l\u2019aide de lois math\u00e9matiques, d\u00e9terminer au centim\u00e8tre pr\u00e8s la d\u00e9croissance de la taille humaine depuis sa cr\u00e9ation. Ainsi, selon lui, Adam aurait mesur\u00e9 123 pieds 9 pouces (environ 40 m\u00e8tres), No\u00e9 33 m\u00e8tres, Hercule 3 m 53 et Jules C\u00e9sar 1 m 62. En fait, jusqu\u2019au XIXe si\u00e8cle, la croyance populaire estimait que l\u2019homme avait d\u00e9cr\u00fb au fil du temps.<\/p>\n<p>Puis, d\u00e8s la r\u00e9volution industrielle, de nombreux facteurs apparaissent pour expliquer une croissance flagrante de la taille humaine. Les principaux \u00e9tant: l\u2019am\u00e9lioration de l\u2019hygi\u00e8ne, des conditions de travail moins p\u00e9nibles, les progr\u00e8s de la m\u00e9decine et une alimentation plus vari\u00e9e.<\/p>\n<p>Si la taille constitue un bon indicateur des conditions de vie d\u2019une soci\u00e9t\u00e9, sa stagnation traduit-elle l\u2019absence d\u2019am\u00e9lioration de celles-ci? L\u2019interpr\u00e9tation de cette stagnation n\u2019est pas ais\u00e9e. \u00abC\u2019est une \u00e9nigme\u00bb, ne cache pas Kaspar Staub, dans une interview accord\u00e9e au Tages-Anzeiger. L\u2019explication la plus plausible: \u00abNous avons atteint la grandeur maximale d\u00e9termin\u00e9e g\u00e9n\u00e9tiquement.\u00bb<\/p>\n<p>Le fait que les hommes suisses soient aussi grands que dans d\u2019autres pays du centre et du nord de l\u2019Europe o\u00f9 la croissance stagne \u00e9galement corrobore cette hypoth\u00e8se. En Europe du sud o\u00f9 les tailles moyennes sont plus faibles, la tendance \u00e0 l\u2019augmentation de la croissance se maintient.<\/p>\n<p>Une autre piste est \u00e9voqu\u00e9e. Aux USA, on trouve une relation statistique entre le ralentissement de la croissance et la propagation du surpoids. Kaspar Staub craint un ph\u00e9nom\u00e8ne identique pour la Suisse: \u00abPendant un certain temps nous avons envoy\u00e9 l\u2019\u00e9nergie excessive pour nous nourrir et nous faire grandir. Maintenant que nous avons atteint le maximum en taille, nous poussons en largeur. Les statistiques de la Conf\u00e9d\u00e9ration montrent d\u2019ailleurs, d\u00e8s la fin des ann\u00e9es 1980, un nombre croissant d\u2019ob\u00e8ses chez les 19 ans.\u00bb<br \/>\n_______<\/p>\n<p>Une version de cet article est parue dans L&rsquo;Hebdo.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Apr\u00e8s un si\u00e8cle de croissance continue, la taille moyenne de la population semble avoir atteint son maximum. Explications.<\/p>\n","protected":false},"author":375,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[1298],"class_list":["post-3495","post","type-post","status-publish","format-standard","hentry","category-latitude","tag-chroniques","latitude"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - aioseo.com -->\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Genevi\u00e8ve Grimm-Gobat\"\/>\n\t<meta name=\"keywords\" content=\"chroniques,latitudes\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/largeur.com\/?p=3495\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.9\" \/>\n\t\t<meta property=\"og:locale\" content=\"fr_FR\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Largeur.com |\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" 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