It can be concluded that physical activity may be effective in reducing burn-out risk .
The few observational studies linking sedentary and dietary behavior with burn-out risk suggest that being more sedentary and eating less healthy are each associated with higher burn-out risk .
Although it is believed that physical activity , sedentary , and dietary behavior ( i.e. , energy balance-related behavior ) may decrease the risk of burn-out  , the association between both is currently not well understood .
Therefore , the aim of this systematic review was to synthesize studies investigating the relationship between energy balance-related behavior  and  burn-out risk .
Blood profiles, body fat and mood state in healthy subjects on different diets supplemented with Omega-3 polyunsaturated fatty acids.
BACKGROUND Diets and Omega-3 polyunsaturated fatty acids have been considered as important factors to reduce the risk of cardiovascular and inflammatory diseases , but there are few details on the effects on healthy subjects . The aim of the present study was to examine the variation of several physiological parameters in healthy subjects on different diets supplemented with Omega-3 fatty acids .  MATERIAL S AND METHODS The experiment was carried out on 33 subjects divided into four groups according to a double-blind cross-over design with a 1 : 1 ratio for Omega-3 ( vs. placebo ) and open-label parallel-groups with a 1 : 1 ratio for the Zone diet ( vs. the diet suggested by the Italian National Research Institute for Nutrition and Foods ) . Blood sample s were collected at the beginning of the experiment and after 35 ( cross-over ) and 70 days . The Profile of Mood States test ( POMS ) was also performed . RESULTS The arachidonic acid/eicosapentaenoic acid ratio ( AA/EPA ) was strongly reduced by Omega-3 with a supplementary effect of the diet and in particular the Zone diet . The AA/EPA reduction was correlated with a concomitant decrease of insulin and homocysteine levels . The Zone diet reduced skinfold thickness and body fat percentage and also showed antioxidant effects . The mood state changed after Omega-3 supplementation , with an increased POMS index . This was related to a concomitant reduction of AA/EPA and was particularly evident in the Zone diet . CONCLUSION AA/EPA and mood state are differently influenced by diet and Omega-3 , body fat is particularly reduced by Zone diet , while blood parameters such as triglycerides/HDL ratio , insulin and homocysteine are related to AA/EPA variations . These findings are discussed in terms of differences in the composition of the diets and the influences of Omega-3 on physiological functions
It can be concluded that physical activity may be effective in reducing burn-out risk .
The few observational studies linking sedentary and dietary behavior with burn-out risk suggest that being more sedentary and eating less healthy are each associated with higher burn-out risk .
Although it is believed that physical activity , sedentary , and dietary behavior ( i.e. , energy balance-related behavior ) may decrease the risk of burn-out  , the association between both is currently not well understood .
Therefore , the aim of this systematic review was to synthesize studies investigating the relationship between energy balance-related behavior  and  burn-out risk .