ARS | Publication request: Increased dietary saturated fat intake is negatively associated with compliance to exercise regimen and improvement in fitness parameters.

Submitted to: Journal of Federation of American Societies for Experimental Biology
Publication Type: Abstract Only
Publication Acceptance Date: February 1, 2012
Publication Date: March 29, 2012
Citation: Krishnan, S., Gustafson, M., Sheets, C., Souza, E., Keim, N.L. 2012. Increased dietary saturated fat intake is negatively associated with compliance to exercise regimen and improvement in fitness parameters.. Journal of Federation of American Societies for Experimental Biology. 257.4.

Technical Abstract: Objective: To determine if dietary intake of fat, sugar, and/or sodium affects improvement in aerobic fitness in response to a 6- mo endurance and resistance training program in peri-menopausal women. Methods:18 women aged 42-52y underwent a 6 mo exercise intervention, working out 6 d/wk, 60 min/d. The program included daily aerobic activity at = 50% of heart rate (HR) reserve and resistance exercises 3 d/wk. Monitors recorded heart rate during exercise, and compliance was calculated using the number of minutes above prescribed HR. Improvement in aerobic capacity was measured by VO2max at beginning and end of the study. Dietary intake was assessed by 24h recalls on 4 d in 1stmonth and 4 d in 6thmonth of intervention. Results: Total fat and saturated fat intake were negatively correlated to compliance (r = -0.501, p<0.05; r = -0.511, p<0.05), but added sugars, total sugars and sodium intake were not. Change in VO2max was positively correlated with compliance (r = 0.475 p<0.05), but negatively associated with saturated fat intake (r= -0.416, p<0.05). Conclusion: Our observations on the association of fat intake, exercise compliance, and fitness improvement warrant further investigation to understand their underlying biological and behavioral significance. Funded by USDA CRIS 5306 51530 019 00D Grant Funding Source: USDA