Bruce Bailey, Exercise Sciences
Evaluation of how well the academic objectives of the proposal were met:
The study was student run and multiple students were involved. Students were involved in all aspect of this study, which included design, participant recruitment, data collection, database management, implementing the study protocol, data analysis, and we are working on disseminating the findings. Students had opportunities to lead and mentor other students. One graduate student and 2 undergraduate students served as supervisors for the study. Training went top down. Supervisors met with me and then they trained and ran the study. I oversaw all training and meet with all students from the study frequently. In addition to experience in research and training in data collection and database management, students were able to present findings and participate in publishing manuscripts. Students got valuable hands on experience working with participants. In addition, these experiences helped to make these students better health professionals as they gained better understanding of the research process, as well as demonstrating the importance of behavior in preventing disease.
Evaluation of the mentoring environment:
The mentoring environment for the study was carried out well. The environment was set up so that students with more experience trained and oversaw student that were newer. The graduate student and two senior undergraduate student were responsible for running the study. We met weekly as a research group to discuss the study. Monthly we met with multiple researchers to coordinate research, discuss research finding and direct opportunities to write and present research.
List of students who participated and what academic deliverables they have produced or it is anticipated they will produce
- Sharla Compton
- Jeff Kimball
- Wyatt Sessions
- Jillesa Cunico
- Dan Baird
- Ben Larsen
- Bill Errico
- Nick Jackson
- Tim Hope
- Matthew Bell
- Brett Gladson
- Lendrum Morrow
- Evan Finlay
- Matt Wilde
- Jacob Bromley
All the above students were involved in this project support by the MEG grant. While the data collection for the study was just completed students involved in the research were involved in presenting and publishing data. The following are outcomes from these students.
Relationship Between Objectively Measured Sleep and Next Day Physical Activity. Presented at the American College of Sports Medicine Conference, Southwest Chapter, Newport Beach, CA, Oct. 2012. (Sessions W**, Hope T**, LeCheminant JD, Bailey BW)
The Relationship Between Objectively Measured Sleep and Diet Quality in College Women. Presented at the American College of Sports Medicine Conference, Southwest Chapter, Newport Beach, CA, Oct. 2012. (Hope T**, Sessions W**, LeCheminant JD, Bailey BW)
Morrow L**, Sessions W**, Hope T**, LeCheminant JD, Bailey BW. Relationship Between Objectively Measured Sleep and Next Day Physical Activity. Med Sci Sports Exer. 2013;45(5):S1152.
Hope T**, Sessions W**, LeCheminant JD, Bailey BW. The Relationship Between Objectively Measured Sleep and Diet Quality in College Women. Med Sci Sports Exer. 2013;45(5):S1461.
Papers Submitted by students:
Bailey BW, Sessions W**, LeCheminant JD, Tucker LA, Gladson B**, Morrow L**. Evaluating relationship between sleep and next day physical activity in young women. (This paper is 80% complete)
Bailey BW, Lecheminant G**, Tucker LA, Lecheminant JD, Hope T**, Bell M**. Agreement, internal consistency and test stability of the GE Lunar IDXA, BODPOD and InBody 720. (This paper is 80% complete)
Description of the results/findings of the project:
The results of the study have not been completely analyzed. The study was completed at the end of Winter semester 2013. Over the summer we have worked on data management and analysis. A total of 665 freshmen were contacted to participate in the study and 125 were randomized to 10,000, 12,500 or 15,000 steps per day for six months. We were able to get measurable separation in steps per day between the three step groups over the 6 months. Attrition was substantially higher for the 15,000 step group but was not different for the 10,000 and 12,500 step groups. Initial analysis of weight and body fat demonstrated no difference between groups despite confirmed separation in physical activity. We also completed one paper that will be submitted to JAMA Pediatrics. We have included the abstract of this paper below.
Title: The Effects of Long-Term Physical Activity on Food Attention Allocation in College Freshman Women
Purpose: The purpose of this study was to examine the effects of long-term (24 weeks) physical activity on attention allocated toward food in college freshman women. Methods: Seventy-nine freshman college women wore a multi-function pedometer for 24 weeks after being randomly assigned to a daily step level: 10,000; 12,500; or 15,000. After at least 16 weeks of intervention, participants were given a cognitive viewing task (pictures of food and flowers) with the neural response measured using electroencephalogram (EEG) and event-related potentials (ERPs). P300s and LPPs are components of the ERP indicating increased attention to stimuli. Results: There was a significant difference in daily step counts between groups. No interaction between step group and picture condition (food vs. flowers) was found for any of the three ERP (eventrelated potential) variables (P300 amplitude, P300 latency, LPP amplitude). The 12,500 group showed a significantly elevated response in comparison to the other groups for both food and flowers (F=8.84; P=0.0002). Additionally, subjective rating of hunger was significantly lower in the 15,000 step group (F=4.72; P=0.0030). Conclusion: It appears that long-term increases in physical activity are capable of reducing neural orientation toward hedonic food cues as well as subjective hunger ratings. In addition to increasing energy expenditure, increases in long-term physical activity may also influence the physiological drive to consume food.
Description of how the budget was spent
- Participant Reimbursement- $15,000
- Pedometers – $3,200
- Batteries – $100
- Student Wages – $1,200