RESUMO
Purpose: To compare the efficiency of an aerobic physical training program prescribed according to either velocity associated with maximum oxygen uptake (vVO2max) or peak running speed obtained during an incremental treadmill test (Vpeak_K) in mice. Methods: Twenty male Swiss mice, 60 days old, were randomly divided into two groups with 10 animals each: 1. group trained by vVO2max (GVO2), 2. group trained by Vpeak_K (GVP). After the adaptation training period, an incremental test was performed at the beginning of each week to adjust training load and to determine the amount of VO2 and VCO2 fluxes consumed, energy expenditure (EE) and run distance during the incremental test. Mice were submitted to 4 weeks of aerobic exercise training of moderate intensity (velocity referring to 70% of vVO2max and Vpeak_K) in a programmable treadmill. The sessions lasted from 30 to 40 min in the first week, to reach 60 min in the fourth week, in order to provide the mice with a moderate intensity exercise, totaling 20 training sessions. Results: Mice demonstrated increases in VO2max (ml·kg-1·min-1) (GVO2 = 49.1% and GVP = 56.2%), Vpeak_K (cm·s-1) (GVO2 = 50.9% and GVP = 22.3%), EE (ml·kg-0,75·min-1) (GVO2 = 39.9% and GVP = 51.5%), and run distance (cm) (GVO2 = 43.5% and GVP = 33.4%), after 4 weeks of aerobic training (time effect, P < 0.05); there were no differences between the groups. Conclusions: Vpeak_K, as well as vVO2max, can be adopted as an alternative test to determine the performance and correct prescription of systemized aerobic protocol training to mice.
RESUMO
The present study aimed to determine the effects of physical training performed by parents on mice offspring adiposity. Male and female parents underwent an aerobic training protocol for 7 weeks. The trained and sedentary parents were allowed to mate and the resultant offspring divided in: S (Offspring from Sedentary Parents), T (Offspring from Trained Parents), ST (Offspring from Sedentary Father and Trained Mother) and TS (Offspring from Trained Father and Sedentary Mother). After weaning, offspring was euthanized, blood collected and samples of mesenteric and inguinal fat pads used to isolate adipocytes for morphologic and histological analyses. Lee index, mesenteric fat pad, sum of visceral fat and total fat weight of female T was reduced in comparison to the other groups (p < 0.05). Periepididymal and sum of visceral fat in male T group was also reduced when compared to the other groups (p < 0.05). The diameter of mesenteric and inguinal adipocytes of T group was smaller compared to all groups comparisons for both sexes (p < 0.05). In summary, exercise training performed by parents reduced visceral offspring adiposity, the diameter of subcutaneous adipocytes and improved metabolic parameters associated to metabolic syndrome.
Assuntos
Adiposidade/genética , Condicionamento Físico Animal/fisiologia , Adiposidade/fisiologia , Animais , Glicemia/metabolismo , Peso Corporal/fisiologia , Colesterol/sangue , VLDL-Colesterol/sangue , Feminino , Gordura Intra-Abdominal/fisiologia , Masculino , Camundongos , Modelos Animais , Comportamento Sexual Animal , Gordura Subcutânea/fisiologia , Triglicerídeos/sangueRESUMO
Objetivou-se analisar o desempenho motor e a maturidade cognitiva de pré-escolares de Maringá (PR) em função da idade. Participaram 89 crianças com 04 e 05 anos, matriculados regularmente em Centros de Educação infantil (CMEI) do município de Maringá (PR). Os instrumentos foram a Bateria de Avaliação do Movimento para Crianças (MABC-2) e a Escala de Maturidade Mental Colúmbia. Para análise dos dados foram utilizados os testes de Friedman, "U" de Mann Whitney e coeficiente de correlação de Spearman, adotando-se p<0,05. Os resultados demonstraram que 10,1% das crianças apresentaram provável Desordem Coordenativa Desenvolvimental (DCD), 7,9% apresentaram risco de DCD e 82% apresentaram Desenvolvimento Típico (DT). A maioria das crianças apresentou maturidade cognitiva na média e superior (75,3%). Observou-se correlação significativa positiva entre as variáveis (p=0,04; r=0,22). Em geral, os pré-escolares de Maringá (PR) apresentaram índices satisfatórios na classificação motora e cognitiva e há uma interação significativa entre estas variáveis.
Motor performance and cognitive maturity of pre-school children in Maringá, Brazil, according to age are investigated. Eighty-nine children, aged between 4 and 5 years, enrolled in Centers of Children education (CMEI) in Maringá, participated. Tools comprised Battery for Children´s Assessment Movement (MABC-2) and Columbia Mental Maturity Scale. Data were analyzed by Friedman, Mann Whitney "U" and Spearman´s Coefficient of Co-relationship tests, at p<0,05. Results showed that 10.1% of the children probably had Developmental Coordination Disorder (DCD), 7.9% showed risks of DCD and 82% had Typical Development (TD). Most children revealed medium and higher cognitive maturity (75,3%). There was a significant positive co-relationship between the variables (p=0,04; r=0,22). As a rule, pre-school children in Maringá, Brazil, had satisfactory indexes in motor and cognitive classification, with significant interaction between variables.