A second study showed that training in realistic environments, including practiced encounters with armed - opponent actors in buildings and streets, improved their shooting accuracy under
stress Similarly, trials with 66 of the officers revealed that those who trained weekly on their own in a combat sport such as karate or kickboxing performed better under high - anxiety fights than those with no additional training, although both groups suffered performance decreases when
conditions shifted from low to high anxiety.
Lastly, increased systemic inflammation seen during ageing is also apparent in chronic infections such HIV or cytomegalovirus, 10,15 obesity7 and individuals enduring chronic psychological
stress.16
Similarly, the main features of immunosenescence are apparent in many of these
conditions, including decreased antibody responses, increased infections, malignancies and also incidences of inflammatory associated disorders such as cardiovascular disease.7, 10,15,16 Inflammation and premature immunosenescence are, therefore, prevalent features of many common
conditions of modern life, such as obesity and
stress, and could have negative health consequences for large proportions of society well before old age is reached.