Follow-Up to Eat Better, Move More
In response to requests for more weekly modules, a second part of Eat Better, Move More was published online and translated into Spanish. It includes updated nutrition information on the 2005 Dietary Guidelines for Americans (HHS and USDA, 2005), the DASH diet (NHLBI, 2006), and nutrients of concern, including vitamins D and B12 and potassium. Additional physical activity recommendations were added related to stretching, balance, strengthening, use of an exercise band, and continued use of pedometers (Kamp et al., 2007).
Kirk-Sanchez and the group at Florida International University also conducted a small pilot study with 30 older subjects (average age of 82 years), 14 of which completed the 12-week intervention. Results included an average improvement of 2.3 seconds in the Timed Up and Go test, an increase of 83 meters in the timed 6-minute walk, and an increase of 4 repetitions in the timed bicep curls. Due to the small sample size, changes in nutrition behaviors could not be assessed.
Kirk-Sanchez closed by suggesting that future steps include conducting a larger and more controlled pilot study of Eat Better, Move More Part 2 with a focus on special populations, such as Latinos and people with specific chronic conditions, and additional outcomes including depression and cognition.
During the discussion, points raised by participants included protein intake and recommendations, and aspects of MNT.
Chronic Versus Acute Feeding of Protein
Robert Russell revisited the idea of changing the Dietary Reference Intakes (DRIs) for protein and asked, since changes in Estimated Average Requirements are based on chronic feeding experiments, if there were data on chronic feeding of protein over the 33 percent distribution that was presented. Volpi responded that those data do not currently exist and agreed that more studies in that area need to be conducted. Paddon-Jones agreed and added that he has nearly completed a study comparing 24-hour protein synthesis among people on an evenly distributed diet to those on a skewed “carbohydrate breakfast diet.” He said they hope to tie those results to nitrogen balance in order to reevaluate the protein DRIs. Volpi noted that the distribution of protein intake in nitrogen balance studies is highly