JEPonlineAPRIL2018_Smolarek.doc - 41 Regarding males there...

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Journal of Exercise Physiology online April 2018 Volume 21 Number 2 Official Research Journal of the American Society of Exercise Physiologists ISSN 1097-9751 JEP online Strength Decline in Sedentary Males and Females of Different Ages André de Camargo Smolarek 1,2 , Steven R. McAnulty 3 , Brad J. Schoenfeld 4 , Charllynson W. Cordeiro 5 , Ilma C. Honorato 5 , Luis H. Ferreira 2 , Luis P. Mascarenhas 1 , William C. Souza 1 , Cleyton S. Oliveira 2 , Erivelton Fontana de Laat 1 , Alan C. Utter 6 , Tácito P. Souza- Junior 2 1 Department of Physical Education, Biochemistry of the Exercise Laboratory, Centro Oeste University State, Irati, Parana, 2 Research Group on Metabolism, Nutrition and Strength Training, Department of Physical Education, Federal University of Parana, Curitiba, Brazil, 3 Department of Health and Exercise Science, Appalachian State University, Boone, NC, 4 City University of New York- Lehman College New York City, Bronx United States, 5 Department of Physical Education in Faculty Guairacá, PR, 6 Texas Woman's University, Office of the Provost, Denton, TX ABSTRACT Smolarek AC, McAnulty SR, Schoenfeld BJ, Cordeiro CW, Honorato IC, Ferreira LH, Mascarenhas LP, Souza WC, Oliveira CS, Laat EF, Utter AC, Souza-Junior TP . Strength Decline in Sedentary Males and Females of Different Ages. JEP online 2018;21(2):40-50. The purpose of this study was to compare the muscle strength of sedentary adults within different age groups and investigate the effect of age on changes in strength and body composition. Six hundred and twenty-seven sedentary subjects were recruited (331 males and 296 females) and stratified into three age groups of 20 to 29 yrs (G1), 30 to 39 yrs (G2), and 40 to 49 yrs (G3). All subjects were not physically active. Subjects’ anthropometric measurements were taken prior to a 1-min sit-up test that was followed by an arm flexion and extension exercise. For females, their body mass decreased by 6.1% (P=0.01) when comparing G1 with G3. For the 1-min sit-up test, there was a decrease of 27.7% and 53.3% (P=0.001 and P=0.001, respectively) when comparing G1 with G2 and G3, respectively. Also, G2 compared to G3 exhibited a decrease of 20% (P=0.001). 40
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Regarding males, there was a decrease in the 1-min sit-up test of 26.8% (P=0.001) when comparing G1 with G3 and a decrease of 23.1% (P=0.001) when comparing G2 with G3. But in the flexion and extension of the arms, a decrease in strength did not exist for either sex (P>0.05). The findings indicate that while an increase in sedentary adults stratified by age is associated with a significant increase in BM and BF in males and females, a significant increase in BMI in the males with no significant difference in females, a significant decrease in LM in females with no significant difference in males, a significant decrease in the 1-min sit-up test in males and females, there were no significant differences observed in the push- up test (EFE) in males and females.
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  • Fall '15
  • muscle mass, decrease, muscle strength, sarcopenia

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