In this context, medical fitness, comprising both physical and mental fitness, means not suffering from any disease or disability which could make this personnel unable:
Sa chomhthéacs sin, ciallaíonn dea-shláinte, lena gcuimsítear dea-shláinte choirp agus mheabhrach, nach bhfuil aon ghalar ná aon mhíchumas ar an duine seo den phearsanra a d'fhágfadh nach mbeadh sé in ann: