Mpira ndi masewera owopsa.Rugby iyenera kukhala yachiwiri ngati masewera owopsa kwambiri pambuyo pa kumenyana ngati masewera onse akuwoneka kuti ndi ovulaza.Nanga kodi chisoti cha mpira chimachita chiyani?Kwenikweni, nkhaniyi itha kuthetsedwa mosavuta.Mpweya womwe uli mu chisoti cha wosewera umagwira ntchito ngati njira yokonzera komanso chitetezo.Pamasewera otentha a NFL, oteteza pakamwa ndi ofunikira kuti apewe kuvulala kumaso ndi mano a osewera.Mikwingwirima ya komweko, zotupa pakhungu, kusokonekera, kupsinjika kwa minofu, ndi kuvulala kwina kumachitika pafupipafupi pamasewera a rugby, koma kugundana kumakhudzana makamaka ndi rugby ndipo sikungaganizidwe ngati matenda a rugby.Ngakhale ndi chitetezo cha chisoti, kuvulala koopsa sikungapewedwe kwathunthu

Imawonedwa ngati chida chosinthira chamasewera, chisoti chotetezeka kwambiri m'mbiri ya NFL.Osewera ambiri a NFL amavala chisoti ichi.Koma idapangidwa kuti ichepetse kugunda kwa osewera a NFL.Asayansi, ma neurosurgeon ndi mainjiniya omwe adapanga chisoticho adanenanso momveka bwino kuti sichingalepheretse kugwedezeka.Palibe chisoti chomwe chingachite zimenezo.