Effects of easy-to-use protein-rich energy bar on energy balance, physical activity and performance during 8 days of sustained physical exertion.
Tanskanen, M., Westerterp, K., Uusitalo, A., Atalay, M., Häkkinen, K., Kinnunen, H., & Kyröläinen, H. (2012). Effects of easy-to-use protein-rich energy bar on energy balance, physical activity and performance during 8 days of sustained physical exertion.. PLoS One, 7(10), e47771. https://doi.org/10.1371/journal.pone.0047771
Published inPLoS One
DisciplineLiikuntafysiologiaValmennus- ja testausoppiExercise PhysiologyScience of Sport Coaching and Fitness Testing
© 2012 Tanskanen et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License.
Background: Previous military studies have shown an energy deficit during a strenuous field training course (TC). This study aimed to determine the effects of energy bar supplementation on energy balance, physical activity (PA), physical performance and well-being and to evaluate ad libitum fluid intake during wintertime 8-day strenuous TC. Methods: Twenty-six men (age 2061 yr.) were randomly divided into two groups: The control group (n = 12) had traditional field rations and the experimental (Ebar) group (n = 14) field rations plus energy bars of 4.1 MJNday21 . Energy (EI) and water intake was recorded. Fat-free mass and water loss were measured with deuterium dilution and elimination, respectively. The energy expenditure was calculated using the intake/balance method and energy availability as (EI/estimated basal metabolic rate). PA was monitored using an accelerometer. Physical performance was measured and questionnaires of upper respiratory tract infections (URTI), hunger and mood state were recorded before, during and after TC. Results: Ebar had a higher EI and energy availability than the controls. However, decreases in body mass and fat mass were similar in both groups representing an energy deficit. No differences were observed between the groups in PA, water balance, URTI symptoms and changes in physical performance and fat-free mass. Ebar felt less hunger after TC than the controls and they had improved positive mood state during the latter part of TC while controls did not. Water deficit associated to higher PA. Furthermore, URTI symptoms and negative mood state associated negatively with energy availability and PA. Conclusion: An easy-to-use protein-rich energy bars did not prevent energy deficit nor influence PA during an 8-day TC. The high content of protein in the bars might have induced satiation decreasing energy intake from field rations. PA and energy intake seems to be primarily affected by other factors than energy supplementation such as mood state. ...
PublisherPublic Library of Science
Publication in research information system
MetadataShow full item record
- Liikuntatieteiden tiedekunta 
Except where otherwise noted, this item's license is described as © 2012 Tanskanen et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License.
Showing items with similar title or keywords.
Effects of military training on aerobic fitness, serum hormones, oxidative stress and energy balance, with special reference to overreaching Tanskanen, Minna (University of Jyväskylä, 2012)
Kortelainen, Lauri; Helske, Jouni; Finni, Taija; Mehtätalo, Lauri; Tikkanen, Olli; Kärkkäinen, Salme (Institute of Physics, 2021)Objective: Heart rate (HR) monitoring provides a convenient and inexpensive way to predict energy expenditure (EE) during physical activity. However, there is a lot of variation among individuals in the EE-HR relationship, ...
Aerobic fitness, energy balance and BMI are associated with training load assessed by activity energy expenditure Tanskanen, Minna; Uusitalo, Arja; Häkkinen, Keijo; Nissilä, Juuso; Santtila, Matti; Westerterp, Klaas R.; Kyröläinen, Heikki (2009)The present study examined whether activity energy expenditure related to body mass (AEE/kg) is associated with maximal aerobic fitness (VO2max), energy balance, and body mass index (BMI) during the 2 hardest weeks of the ...
Effects of weight reduction on body composition, hormone concentrations and physical performance in female track and field jumpers during a preparatory and competition season Lällä, Sini (2019)Introduction. Weight reduction is common and generally accepted among obese people, but nowadays also a general practice among athletes. There are many reasons for athletes to reduce weight: to increase physical performance, ...
Eronen, Sanna (2022)Riittävä energiansaanti on urheilijan terveyden ja suorituskyvyn kannalta keskeistä. Energiansaannin riittävyyttä kuvataan yleisesti energian saatavuuden (EA) käsitteen avulla. Vaikka matalaan EA:een liittyvät haitat ovat ...