scholarly journals Impact of energy turnover on fat balance in healthy young men during energy balance, energetic restriction and overfeeding

2019 ◽  
Vol 123 (1) ◽  
pp. 30-40 ◽  
Author(s):  
Alessa Nas ◽  
Franziska Büsing ◽  
Franziska A. Hägele ◽  
Mario Hasler ◽  
Manfred J. Müller ◽  
...  
Keyword(s):  
Physical Activity ◽  
Energy Balance ◽  
Weight Control ◽  
Energy Requirement ◽  
Fat Oxidation ◽  
High Energy ◽  
Activity Level ◽  
Energy Turnover ◽  
Healthy Men ◽  
Metabolic Chamber

AbstractBody weight control is thought to be improved when physical activity and energy intake are both high (high energy turnover (ET)). The aim of the present study was to investigate the short-term impact of ET on fat balance during zero energy balance (EB), energetic restriction (ER) and overfeeding (OF). In a randomised crossover study, nine healthy men (BMI: 23·0 (SD 2·1) kg/m2, 26·6 (SD 3·5) years) passed 3 × 3 d in a metabolic chamber: three levels of ET (low, medium and high; physical activity level = 1·3−1·4, 1·5−1·6 and 1·7−1·8) were performed at zero EB, ER and OF (100, 75 and 125 % of individual energy requirement). Different levels of ET were obtained by walking (4 km/h) on a treadmill (0, 165 and 330 min). Twenty-four-hour macronutrient oxidation and relative macronutrient balance (oxidation relative to intake) was calculated, and NEFA, 24-h insulin and catecholamine secretion were analysed as determinants of fat oxidation. During EB and OF, 24-h fat oxidation increased with higher ET. This resulted in a higher relative fat balance at medium ET (EB: +17 %, OF: +14 %) and high ET (EB: +23 %, OF: +17 %) compared with low ET (all P < 0·05). In contrast, ER led to a stimulation of 24-h fat oxidation irrespective of ET (no differences in relative fat balance between ET levels, P > 0·05). In conclusion, under highly controlled conditions, a higher ET improved relative fat balance in young healthy men during OF and EB compared with a sedentary state.

scholarly journals Determinants of fat oxidation during exercise in healthy men and women: a cross-sectional study

2005 ◽  
Vol 98 (1) ◽  
pp. 160-167 ◽  
Author(s):  
Michelle C. Venables ◽  
Juul Achten ◽  
Asker E. Jeukendrup
Keyword(s):  
Physical Activity ◽  
Physical Activity Level ◽  
Fat Oxidation ◽  
Activity Level ◽  
Interindividual Variation ◽  
Maximal Heart Rate ◽  
Men And Women ◽  
Healthy Men ◽  
Oxidation Rates ◽  
And Gender

The aim of the present study was to establish fat oxidation rates over a range of exercise intensities in a large group of healthy men and women. It was hypothesised that exercise intensity is of primary importance to the regulation of fat oxidation and that gender, body composition, physical activity level, and training status are secondary and can explain part of the observed interindividual variation. For this purpose, 300 healthy men and women (157 men and 143 women) performed an incremental exercise test to exhaustion on a treadmill [adapted from a previous protocol (Achten J, Venables MC, and Jeukendrup AE. Metabolism 52: 747–752, 2003)]. Substrate oxidation was determined using indirect calorimetry. For each individual, maximal fat oxidation (MFO) and the intensity at which MFO occurred (Fatmax) were determined. On average, MFO was 7.8 ± 0.13 mg·kg fat-free mass (FFM)−1·min−1 and occurred at 48.3 ± 0.9% maximal oxygen uptake (V̇o2 max), equivalent to 61.5 ± 0.6% maximal heart rate. MFO (7.4 ± 0.2 vs. 8.3 ± 0.2 mg·kg·FFM−1·min−1; P < 0.01) and Fatmax (45 ± 1 vs. 52 ± 1% V̇o2 max; P < 0.01) were significantly lower in men compared with women. When corrected for FFM, MFO was predicted by physical activity (self-reported physical activity level), V̇o2 max, and gender ( R2 = 0.12) but not with fat mass. Men compared with women had lower rates of fat oxidation and an earlier shift to using carbohydrate as the dominant fuel. Physical activity, V̇o2 max, and gender explained only 12% of the interindividual variation in MFO during exercise, whereas body fatness was not a predictor. The interindividual variation in fat oxidation remains largely unexplained.

scholarly journals Appetite Control Is Improved by Acute Increases in Energy Turnover at Different Levels of Energy Balance

2019 ◽  
Vol 104 (10) ◽  
pp. 4481-4491 ◽  
Author(s):  
Franziska A Hägele ◽  
Franziska Büsing ◽  
Alessa Nas ◽  
Mario Hasler ◽  
Manfred J Müller ◽  
...  
Keyword(s):  
Physical Activity ◽  
Energy Balance ◽  
Caloric Restriction ◽  
Energy Intake ◽  
Weight Control ◽  
Positive Energy ◽  
Zero Energy ◽  
Appetite Control ◽  
Energy Turnover ◽  
Ad Libitum

Abstract Background Weight control is hypothesized to be improved when physical activity and energy intake are both high [high energy turnover (ET)]. Objective The impact of three levels of ET on short-term appetite control is therefore investigated at fixed levels of energy balance. Design In a randomized crossover trial, 16 healthy adults (25.1 ± 3.9 y of age; body mass index, 24.0 ± 3.2 kg/m2) spent three daylong protocols for four times in a metabolic chamber. Four conditions of energy balance (ad libitum energy intake, zero energy balance, −25% caloric restriction, and +25% overfeeding) were each performed at three levels of ET (PAL 1.3 low, 1.6 medium, and 1.8 high ET; by walking on a treadmill). Levels of appetite hormones ghrelin, GLP-1, and insulin (total area under the curve) were measured during 14 hours. Subjective appetite ratings were assessed by visual analog scales. Results Compared with high ET, low ET led to decreased GLP-1 (at all energy balance conditions: P < 0.001) and increased ghrelin concentrations (caloric restriction and overfeeding: P < 0.001), which was consistent with higher feelings of hunger (zero energy balance: P < 0.001) and desire to eat (all energy balance conditions: P < 0.05) and a positive energy balance during ad libitum intake (+17.5%; P < 0.001). Conclusion Appetite is regulated more effectively at a high level of ET, whereas overeating and consequently weight gain are likely to occur at low levels of ET. In contrast to the prevailing concept of body weight control, the positive impact of physical activity is independent from burning up more calories and is explained by improved appetite sensations.

Physical Activity Patterns Associated With Weight-Control Status: Differences by Race and Sex

2008 ◽  
Vol 5 (3) ◽  
pp. 456-468 ◽  
Author(s):  
Judy Kruger ◽  
Michelle M. Yore ◽  
Barbara E. Ainsworth ◽  
Caroline A. Macera
Keyword(s):  
Physical Activity ◽  
Energy Balance ◽  
Strength Training ◽  
Weight Control ◽  
Telephone Survey ◽  
Activity Patterns ◽  
Population Data ◽  
Occupational Activity ◽  
Physical Activity Patterns ◽  
Status Differences

Background:Physical activity (PA) plays a major role in maintaining energy balance. We examined the patterns of occupational activity, strength training, and lifestyle PA (low, medium, high) by sex and race among persons trying to control their weight (lose weight, stay about the same, not trying to lose/not trying to stay about the same).Methods:Population data (N = 9258) from a nationwide telephone survey were collected to examine PA patterns. Domains of PA were analyzed by sex and race.Results:Of those trying to control their weight, approximately 24.0% engaged in strengthening activities 2 to 3 d/wk. Among those trying to lose weight, 48.2% versus 42.2% of men (White and non-White, respectively) and 40.4% versus 35.1% of women (White and non-White, respectively) reported high volumes of PA.Conclusions:PA patterns among persons trying to control their weight vary by sex and race. Adults trying to control their weight are encouraged to increase levels of PA.

scholarly journals Physical activity and energy balance

1999 ◽  
Vol 2 (3a) ◽  
pp. 335-339 ◽  
Author(s):  
Marleen A. Van Baak
Keyword(s):  
Physical Activity ◽  
Energy Balance ◽  
Energy Expenditure ◽  
Total Energy ◽  
Energy Intake ◽  
Body Mass ◽  
Resting Energy Expenditure ◽  
Total Energy Expenditure ◽  
Activity Level ◽  
Resting Energy

AbstractEnergy expenditure rises above resting energy expenditure when physical activity is performed. The activity-induced energy expenditure varies with the muscle mass involved and the intensity at which the activity is performed: it ranges between 2 and 18 METs approximately. Differences in duration, frequency and intensity of physical activities may create considerable variations in total energy expenditure. The Physical Activity Level (= total energy expenditure divided by resting energy expenditure) varies between 1.2 and 2.2–2.5 in healthy adults. Increases in activity-induced energy expenditure have been shown to result in increases in total energy expenditure, which are usually greater than the increase in activity-induced energy expenditure itself. No evidence for increased spontaneous physical activity, measured by diary, interview or accelerometer, was found. However, this does not exclude increased physical activity that can not be measured by these methods. Part of the difference may also be explained by the post-exercise elevation of metabolic rate.If changes in the level of physical activity affect energy balance, this should result in changes in body mass or body composition. Modest decreases of body mass and fat mass are found in response to increases in physical activity, induced by exercise training, which are usually smaller than predicted from the increase in energy expenditure. This indicates that the training-induced increase in total energy expenditure is at least partly compensated for by an increase in energy intake. There is some evidence that the coupling between energy expenditure and energy intake is less at low levels of physical activity. Increasing the level of physical activity for weight loss may therefore be most effective in the most sedentary individuals.

scholarly journals The conceptual framework for estimating food energy requirement

2005 ◽  
Vol 8 (7a) ◽  
pp. 940-952 ◽  
Author(s):  
Anna Ferro-Luzzi
Keyword(s):  
Physical Activity ◽  
Energy Expenditure ◽  
Energy Requirement ◽  
Historical Review ◽  
Activity Level ◽  
World Health ◽  
Future Research ◽  
Expert Consultation ◽  
Protein Requirements ◽  
Health Organization

AbstractObjectiveIn anticipation of the revision of the 1985 Food and Agricultural Organization/World Health Organization/United Nations University (FAO/ WHO/UNU) Expert Consultation Report on ‘Energy and Protein Requirements’, recent scientific knowledge on the principles underlying the estimation of energy requirement is reviewed.DesignThis paper carries out a historical review of the scientific rationale adopted by previous FAO/WHO technical reports on energy requirement, discusses the concepts used in assessing basal metabolic rate (BMR), energy expenditure, physical activity level (PAL), and examines current controversial areas. Recommendations and areas of future research are presented.ConclusionsThe database of the BMR predictive equations developed by the 1985 FAO/WHO/UNU Expert Consultation Report on Energy and Protein Requirements needs updating and expansion, applying strict and transparent selection criteria. The existence of an ethnic/tropical factor capable of affecting BMR is not supported by the available evidence. The factorial approach for the calculation of energy requirement, as set out in the 1985 report, should be retained. The estimate should have a normative rather than a prescriptive nature, except for the allowance provided for extra physical activity for sedentary populations, and for the prevention of non-communicable chronic diseases. The estimate of energy requirement of children below the age of 10 years should be made on the basis of energy expenditure rather than energy intake. The evidence of the existence of an ethnic/tropical factor is conflicting and no plausible mechanism has as yet been put forward.

scholarly journals OVERWEIGHT IN SCHOOLCHILDREN AND ASSOCIATION WITH PHYSICAL ACTIVITY AND PARENTAL HABITS

2019 ◽  
Vol 25 (4) ◽  
pp. 290-294
Author(s):  
Elena Sierra Palmeiro ◽  
Miguel Angel Gonzalez Valeiro ◽  
Marian Fernandez Villarino
Keyword(s):  
Physical Activity ◽  
Physical Activity Level ◽  
Weight Control ◽  
The Body ◽  
Activity Level ◽  
Excess Weight ◽  
Family Characteristics ◽  
Childhood And Adolescence ◽  
Level Of Evidence ◽  
Parental Level

ABSTRACT Introduction: Excess weight in childhood and adolescence is an important health problem that tends to persist in adulthood. Among the causes of this increase there appears to be a consensus on emphasizing physical activity as an excellent strategy to achieve better weight control, and on considering some models of parental practices essential for the acquisition of healthy habits in young people. Objective: To study the role of physical activity (undertaken by children and their parents) in the prevalence of overweight in Spanish schoolchildren. Methods: We studied 1687 schoolchildren aged between 13 and 17 years and 2335 mothers and fathers. The body mass index (BMI) of each child was calculated and information was collected on the physical activity level of the children and the parental physical activity level and BMI. Results: The schoolchildren analyzed have a higher prevalence of excess weight than the national average, significantly associated with age, sex, and excess weight of the mother, showing no significant association with the level of physical activity, but instead with the parental level of physical activity. Discussion: As predictive variables for excess weight in schoolchildren we found sex, age and excess weight of the mother. Conclusion: There is a prevalence of obesity and overweight in the sample of schoolchildren studied, and this is significantly associated with age rather than with physical activity. This prevalence is also significantly associated with the excess weight of the parents and with the level of physical activity of the father, which appears to confirm the influence of family characteristics and household physical activity in excess weight among schoolchildren. Level of Evidence I; Diagnostic studies - Investigating a diagnostic test.

Energy flux, more so than energy balance, protein intake, or fitness level, influences insulin-like growth factor-I system responses during 7 days of increased physical activity

2007 ◽  
Vol 103 (5) ◽  
pp. 1613-1621 ◽  
Author(s):  
Kevin R. Rarick ◽  
Matthew A. Pikosky ◽  
Ann Grediagin ◽  
Tracey J. Smith ◽  
Ellen L. Glickman ◽  
...  
Keyword(s):  
Physical Activity ◽  
Energy Balance ◽  
Energy Intake ◽  
Energy Flux ◽  
Protein Intake ◽  
Activity Level ◽  
Protein Diet ◽  
Energy Deficit ◽  
Fitness Level ◽  
Igf I

The purpose of this study was to determine the impact of dietary factors and exercise-associated factors on the response of IGF-I and its binding proteins (IGFBPs) during a period of increased physical activity. Twenty-nine men completed a 4-day ( days 1–4) baseline period of a controlled energy balanced diet while maintaining their normal physical activity level followed by 7 days ( days 5–11) of a 1,000 kcal/day increase in physical activity above their normal activity levels. Two subject groups, one sedentary (Sed, mean V̇o2peak: 39 ml·kg−1·min−1, n = 7) and one fit (FIT1, mean V̇o2peak: 56 ml·kg−1·min−1, n = 8) increased energy intake to maintain energy balance throughout the 7-day intervention. In two other fit subject groups (FIT2, n = 7 and FIT3, n = 7), energy intake remained at baseline resulting in a 1,000 kcal/day exercise-induced energy deficit. Of these, FIT2 received an adequate protein diet (0.9 g/kg), and FIT3 received a high-protein diet (1.8 g/kg). For all four groups, IGF-I, IGFBP-3, and the acid labile subunit (ALS) were significantly decreased by day 11 (27 ± 4%, 10 ± 2%, and 19 ± 4%, respectively) and IGFBP-2 significantly increased by 49 ± 21% following day 3. IGFBP-1 significantly increased only in the two negative energy balance groups, FIT2 (38 ± 6%) and FIT3 (46 ± 8%). Differences in initial fitness level and dietary protein intake did not alter the IGF-I system response to an acute increase in physical activity. Decreases in IGF-I were observed during a moderate increase in physical activity despite maintaining energy balance, suggesting that currently unexplained exercise-associated mechanisms, such as increased energy flux, regulate IGF-I independent of energy deficit.

scholarly journals Misreporting of energy: prevalence, characteristics of misreporters and influence on observed risk estimates in the Malmö Diet and Cancer cohort

2005 ◽  
Vol 94 (5) ◽  
pp. 832-842 ◽  
Author(s):  
Irene Mattisson ◽  
Elisabet Wirfält ◽  
Carin Andrén Aronsson ◽  
Peter Wallström ◽  
Emily Sonestedt ◽  
...  
Keyword(s):  
Physical Activity ◽  
Leisure Time Physical Activity ◽  
High Energy ◽  
Activity Level ◽  
Low Energy ◽  
Risk Estimates ◽  
Diet History ◽  
Diet And Cancer ◽  
Post Menopausal ◽  
Modified Diet

The present study investigates the prevalence of misreporting of energy in the Malmö Diet and Cancer cohort, and examines anthropometric, socio-economic and lifestyle characteristics of the misreporters. Further, the influence of excluding misreporters on risk estimates of post-menopausal breast cancer was examined. Information of reported energy intake (EI) was obtained from a modified diet history method. A questionnaire provided information on lifestyle and socio-economic characteristics. Individual physical activity level (PAL) was calculated from self-reported information on physical activity at work, leisure time physical activity and household work, and from estimates of hours of sleeping, self-care and passive time. Energy misreporting was defined as having a ratio of EI to BMR outside the 95% CI limits of the calculated PAL. Logistic regression analysed the risk of being a low-energy reporter or a high-energy reporter. Almost 18% of the women and 12% of the men were classified as low-energy reporters, 2·8% of the women and 3·5% of the men were classified as high-energy reporters. In both genders high BMI, large waist circumference, short education and being a blue-collar worker were significantly associated with low-energy reporting. High-energy reporting was significantly associated with low BMI, living alone and current smoking. The results add support to the practice of energy adjustment as a means to reduce the influence of errors in risk assessment.

scholarly journals Increasing Energy Flux to Maintain Diet-Induced Weight Loss

Nutrients ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2533 ◽  
Author(s):  
Christopher L. Melby ◽  
Hunter L. Paris ◽  
R. Drew Sayer ◽  
Christopher Bell ◽  
James O. Hill
Keyword(s):  
Physical Activity ◽  
Weight Loss ◽  
Body Weight ◽  
Energy Balance ◽  
Energy Expenditure ◽  
Energy Flux ◽  
Weight Maintenance ◽  
High Energy ◽  
Daily Energy

Long-term maintenance of weight loss requires sustained energy balance at the reduced body weight. This could be attained by coupling low total daily energy intake (TDEI) with low total daily energy expenditure (TDEE; low energy flux), or by pairing high TDEI with high TDEE (high energy flux). Within an environment characterized by high energy dense food and a lack of need for movement, it may be particularly difficult for weight-reduced individuals to maintain energy balance in a low flux state. Most of these individuals will increase body mass due to an inability to sustain the necessary level of food restriction. This increase in TDEI may lead to the re-establishment of high energy flux at or near the original body weight. We propose that following weight loss, increasing physical activity can effectively re-establish a state of high energy flux without significant weight regain. Although the effect of extremely high levels of physical activity on TDEE may be constrained by compensatory reductions in non-activity energy expenditure, moderate increases following weight loss may elevate energy flux and encourage physiological adaptations favorable to weight loss maintenance, including better appetite regulation. It may be time to recognize that few individuals are able to re-establish energy balance at a lower body weight without permanent increases in physical activity. Accordingly, there is an urgent need for more research to better understand the role of energy flux in long-term weight maintenance.

scholarly journals DIFFERENCES IN KNEE SENSORIMOTOR CONTROL BY PHYSICAL ACTIVITY LEVEL AND SEX

2019 ◽  
Vol 27 (1) ◽  
pp. 20-26
Author(s):  
Cristóbal San Martín-Mohr ◽  
Andrés Valladares ◽  
Iver Cristi ◽  
Francisco José Berral ◽  
Claudio Oyarzo ◽  
...  
Keyword(s):  
Physical Activity ◽  
Physical Activity Level ◽  
Muscle Activation ◽  
Muscle Tension ◽  
Control Level ◽  
Sensorimotor Control ◽  
Activity Level ◽  
Level Of Evidence ◽  
Cross Sectional ◽  
Healthy Men

ABSTRACT Objective: The aim of this study was to compare the differences in knee sensorimotor control between healthy men and women by measuring the joint position sense (JPS), sensation of muscle tension (steadiness), and onset of muscle activation (OMA). Methods: Twenty-four healthy women and 27 healthy men were tested. Knee sensorimotor control was assessed using the JPS test with electrogoniometers in 3 different ranges of motion, sensation of muscle tension using the isometric steadiness technique, and OMA against a mechanical perturbation. Each assessment was compared by sex, physical activity level, and right or left lower limb. Results: The men obtained better values in the JPS test between 90º and 60º and between 30º and 0º than the women. The subjects with higher levels of physical activity also showed better values, between 90º and 60º and between 30º and 0º. The best results for steadiness were found in the women and the subjects with higher levels of physical activity. In the OMA test, no significant differences were found in the studied variables. Conclusion: The results suggest that higher levels of physical activity may determine better sensorimotor control. Men have better articular sensation, and women have better muscle strength control. Level of evidence III, Cross sectional study.

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