Saturday, August 25, 2012

Take a walk to cure the high fat meal?

I am no biochemist so will not analyse this study, but I found the impact of exercise on the body in the context of a high fat meal quite interesting.

Maybe a lot of the fuss about fatty food at one level is because we as a population in general are so inactive.

If you think high blood triglycerides as a consequence of a fatty meal are a bad thing, then just take a walk!

The effect of exercise performed on the day of meal intake on postprandial triglyceride concentration, which is an independent risk factor for cardiovascular disease, is unclear. The present study investigated the effects of combined low-intensity exercise before and after a high-fat meal on serum triglyceride concentrations.
METHODS:Ten healthy young subjects (4 men and 6 women) consumed a relatively high-fat diet (fat energy ratio: men 37.8%; women 39.1%). In the exercise trials, subjects performed brisk walking (2.0 km) following light resistance exercise, either 60 min before or after meal intake. Blood samples were collected prior to, and 2, 4, and 6 h after meal intake.
RESULTS:Exercise resulted in a reduction in the transient elevation in serum triglyceride concentration observed 2 h following meal intake in the post-meal trial (131 ± 67 mg/dL) when compared with the sedentary trial (172 ± 71 mg/dL; 95% CI = 7.2-79.4, d = -1.00). This was also observed in the pre-meal trial, although the effect was less pronounced (148 ± 66 mg/dL; 95% CI = -9.0-59.0, d = -0.57). The triglyceride concentrations in the VLDL, LDL, and HDL fractions, but not the chylomicron fraction, were also decreased 2 h after meal intake in both exercise trials, while the integrated triglyceride values following meal intake showed a greater decrease when exercise was performed after meal intake (d = -1.23) than before (d = -0.47). The concentration of serum growth hormone was drastically increased after exercise in both trials.
CONCLUSION:Low-intensity exercise on the day of meal intake, particular after intake, can prevent the elevation of postprandial triglyceride concentration in healthy young subjects.


FeelGoodEating said...

I think Dan Lieberman just commented again at AHS (I wasn't there) that we evolved walking 5-15 miles a day.

Walking everyday is EXTREMELY important. I think more and more studies like this will be coming forth over the next years.

Sorry to talk about my martial arts teacher again....but at 81 he STILL walks after dinner EVERY night for 2-3 hours. Yes seriously!Does it work???????? Embarrased to say..... I cant keep up with his pace. And i'm not a slouch :-)


Aaron said...

Walking is fantastic -- but I'm relatively young and start to have a little bit of back pain after 4-5 miles. The jist of my story is that everyone needs to assess their own condition before walking miles and miles.

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