Impact of imposed exercise on energy intake in children at risk for overweight

S. Nicole Fearnbach, Travis D. Masterson, Haley A. Schlechter, Amanda J. Ross, Michael J. Rykaczewski, Eric Loken, Danielle Symons Downs, David Thivel, Kathleen Loralee Keller

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Background: Exercise not only has a direct effect on energy balance through energy expenditure (EE), but also has an indirect effect through its impact on energy intake (EI). This study examined the effects of acute exercise on daily ad libitum EI in children at risk for becoming overweight due to family history. Methods: Twenty healthy-weight children (ages 9-12 years, 12 male/8 female) with at least one overweight biological parent (body mass index ≥ 25 kg/m2) participated. Children reported to the laboratory for one baseline and two experimental visits (EX = exercise, SED = sedentary) each separated by 1 week in a randomized crossover design. Two hours into the EX day session, children exercised at 70 % estimated VO2max for 30 min on a cycle ergometer. Objective EI (kcal) was measured at a standard breakfast (~285 kcal) and ad libitum lunch, snack and dinner. Meals were identical on the EX and SED days. Activity-related EE (kcal) was estimated with accelerometers worn on the non-dominant wrist and ankle. Relative EI (kcal) was computed as the difference between Total EI and Activity-related EE for each testing day. Paired t-tests were performed to test differences in Total EI, Activity-related EE and Relative EI between the EX and SED days. Results: Across all meals, Total EI was not statistically different between the EX and SED days (t = 1.8, p = 0.09). Activity-related EE was greater on the EX day compared to the SED day (t = 10.1, p < 0.001). By design, this difference was predominantly driven by activity during the morning (t = 20.4, p < 0.001). Because children consumed a similar number of kcal on each day, but had greater Activity-related EE on the EX day, Relative EI was lower (t = -5.15, p < 0.001) for the EX day (1636 ± 456 kcal) relative to the SED day (1862 ± 426 kcal). Conclusions: Imposed exercise was effective in reducing Relative EI compared to being sedentary. Morning exercise may help children at risk for becoming overweight to better regulate their energy balance within the course of a day.

Original languageEnglish (US)
Article number92
JournalNutrition Journal
Volume15
Issue number1
DOIs
StatePublished - Oct 21 2016

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Energy Intake
Exercise
Energy Metabolism
Meals
Lunch
Snacks
Breakfast
Wrist
Ankle
Cross-Over Studies
Body Mass Index
Weights and Measures

All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Nutrition and Dietetics

Cite this

Fearnbach, S. N., Masterson, T. D., Schlechter, H. A., Ross, A. J., Rykaczewski, M. J., Loken, E., ... Keller, K. L. (2016). Impact of imposed exercise on energy intake in children at risk for overweight. Nutrition Journal, 15(1), [92]. https://doi.org/10.1186/s12937-016-0206-5
Fearnbach, S. Nicole ; Masterson, Travis D. ; Schlechter, Haley A. ; Ross, Amanda J. ; Rykaczewski, Michael J. ; Loken, Eric ; Downs, Danielle Symons ; Thivel, David ; Keller, Kathleen Loralee. / Impact of imposed exercise on energy intake in children at risk for overweight. In: Nutrition Journal. 2016 ; Vol. 15, No. 1.
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abstract = "Background: Exercise not only has a direct effect on energy balance through energy expenditure (EE), but also has an indirect effect through its impact on energy intake (EI). This study examined the effects of acute exercise on daily ad libitum EI in children at risk for becoming overweight due to family history. Methods: Twenty healthy-weight children (ages 9-12 years, 12 male/8 female) with at least one overweight biological parent (body mass index ≥ 25 kg/m2) participated. Children reported to the laboratory for one baseline and two experimental visits (EX = exercise, SED = sedentary) each separated by 1 week in a randomized crossover design. Two hours into the EX day session, children exercised at 70 {\%} estimated VO2max for 30 min on a cycle ergometer. Objective EI (kcal) was measured at a standard breakfast (~285 kcal) and ad libitum lunch, snack and dinner. Meals were identical on the EX and SED days. Activity-related EE (kcal) was estimated with accelerometers worn on the non-dominant wrist and ankle. Relative EI (kcal) was computed as the difference between Total EI and Activity-related EE for each testing day. Paired t-tests were performed to test differences in Total EI, Activity-related EE and Relative EI between the EX and SED days. Results: Across all meals, Total EI was not statistically different between the EX and SED days (t = 1.8, p = 0.09). Activity-related EE was greater on the EX day compared to the SED day (t = 10.1, p < 0.001). By design, this difference was predominantly driven by activity during the morning (t = 20.4, p < 0.001). Because children consumed a similar number of kcal on each day, but had greater Activity-related EE on the EX day, Relative EI was lower (t = -5.15, p < 0.001) for the EX day (1636 ± 456 kcal) relative to the SED day (1862 ± 426 kcal). Conclusions: Imposed exercise was effective in reducing Relative EI compared to being sedentary. Morning exercise may help children at risk for becoming overweight to better regulate their energy balance within the course of a day.",
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Fearnbach, SN, Masterson, TD, Schlechter, HA, Ross, AJ, Rykaczewski, MJ, Loken, E, Downs, DS, Thivel, D & Keller, KL 2016, 'Impact of imposed exercise on energy intake in children at risk for overweight', Nutrition Journal, vol. 15, no. 1, 92. https://doi.org/10.1186/s12937-016-0206-5

Impact of imposed exercise on energy intake in children at risk for overweight. / Fearnbach, S. Nicole; Masterson, Travis D.; Schlechter, Haley A.; Ross, Amanda J.; Rykaczewski, Michael J.; Loken, Eric; Downs, Danielle Symons; Thivel, David; Keller, Kathleen Loralee.

In: Nutrition Journal, Vol. 15, No. 1, 92, 21.10.2016.

Research output: Contribution to journalArticle

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T1 - Impact of imposed exercise on energy intake in children at risk for overweight

AU - Fearnbach, S. Nicole

AU - Masterson, Travis D.

AU - Schlechter, Haley A.

AU - Ross, Amanda J.

AU - Rykaczewski, Michael J.

AU - Loken, Eric

AU - Downs, Danielle Symons

AU - Thivel, David

AU - Keller, Kathleen Loralee

PY - 2016/10/21

Y1 - 2016/10/21

N2 - Background: Exercise not only has a direct effect on energy balance through energy expenditure (EE), but also has an indirect effect through its impact on energy intake (EI). This study examined the effects of acute exercise on daily ad libitum EI in children at risk for becoming overweight due to family history. Methods: Twenty healthy-weight children (ages 9-12 years, 12 male/8 female) with at least one overweight biological parent (body mass index ≥ 25 kg/m2) participated. Children reported to the laboratory for one baseline and two experimental visits (EX = exercise, SED = sedentary) each separated by 1 week in a randomized crossover design. Two hours into the EX day session, children exercised at 70 % estimated VO2max for 30 min on a cycle ergometer. Objective EI (kcal) was measured at a standard breakfast (~285 kcal) and ad libitum lunch, snack and dinner. Meals were identical on the EX and SED days. Activity-related EE (kcal) was estimated with accelerometers worn on the non-dominant wrist and ankle. Relative EI (kcal) was computed as the difference between Total EI and Activity-related EE for each testing day. Paired t-tests were performed to test differences in Total EI, Activity-related EE and Relative EI between the EX and SED days. Results: Across all meals, Total EI was not statistically different between the EX and SED days (t = 1.8, p = 0.09). Activity-related EE was greater on the EX day compared to the SED day (t = 10.1, p < 0.001). By design, this difference was predominantly driven by activity during the morning (t = 20.4, p < 0.001). Because children consumed a similar number of kcal on each day, but had greater Activity-related EE on the EX day, Relative EI was lower (t = -5.15, p < 0.001) for the EX day (1636 ± 456 kcal) relative to the SED day (1862 ± 426 kcal). Conclusions: Imposed exercise was effective in reducing Relative EI compared to being sedentary. Morning exercise may help children at risk for becoming overweight to better regulate their energy balance within the course of a day.

AB - Background: Exercise not only has a direct effect on energy balance through energy expenditure (EE), but also has an indirect effect through its impact on energy intake (EI). This study examined the effects of acute exercise on daily ad libitum EI in children at risk for becoming overweight due to family history. Methods: Twenty healthy-weight children (ages 9-12 years, 12 male/8 female) with at least one overweight biological parent (body mass index ≥ 25 kg/m2) participated. Children reported to the laboratory for one baseline and two experimental visits (EX = exercise, SED = sedentary) each separated by 1 week in a randomized crossover design. Two hours into the EX day session, children exercised at 70 % estimated VO2max for 30 min on a cycle ergometer. Objective EI (kcal) was measured at a standard breakfast (~285 kcal) and ad libitum lunch, snack and dinner. Meals were identical on the EX and SED days. Activity-related EE (kcal) was estimated with accelerometers worn on the non-dominant wrist and ankle. Relative EI (kcal) was computed as the difference between Total EI and Activity-related EE for each testing day. Paired t-tests were performed to test differences in Total EI, Activity-related EE and Relative EI between the EX and SED days. Results: Across all meals, Total EI was not statistically different between the EX and SED days (t = 1.8, p = 0.09). Activity-related EE was greater on the EX day compared to the SED day (t = 10.1, p < 0.001). By design, this difference was predominantly driven by activity during the morning (t = 20.4, p < 0.001). Because children consumed a similar number of kcal on each day, but had greater Activity-related EE on the EX day, Relative EI was lower (t = -5.15, p < 0.001) for the EX day (1636 ± 456 kcal) relative to the SED day (1862 ± 426 kcal). Conclusions: Imposed exercise was effective in reducing Relative EI compared to being sedentary. Morning exercise may help children at risk for becoming overweight to better regulate their energy balance within the course of a day.

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Fearnbach SN, Masterson TD, Schlechter HA, Ross AJ, Rykaczewski MJ, Loken E et al. Impact of imposed exercise on energy intake in children at risk for overweight. Nutrition Journal. 2016 Oct 21;15(1). 92. https://doi.org/10.1186/s12937-016-0206-5