Body mass index and daily physical activity in anorexia nervosa

Bouten, Cvc Carlijn; Lichtenbelt, van Wd Wouter Marken; Westerterp, K.R.

doi:10.1097/00005768-199608000-00005

Cited by 47 publications

(67 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…17 kg.m 72 were equally or more active than the control subjects, while subjects with a BMI1 7 kg.m 72 were equally or less active than the control subjects. 23 In the morbid obese subjects, ®ve of the eight had a low activity level and the other three had a high activity level.…”

Section: Discussionmentioning

confidence: 96%

Physical activity assessment with accelerometers

1999

Int J Obes

225

150

View full text Add to dashboard Cite

OBJECTIVE: Evaluation of motion sensors, speci®cally accelerometers, as an objective tool for the assessment of physical activity in large populations, over periods long enough to be representative of normal daily life and with minimal discomfort to the subjects. METHOD: Review of validation studies of accelerometers with indirect calorimetry as a reference method. Accelerometers were commercially available one-axial accelerometers: Caltrac 1 , Computer Science Application (CSA) accelerometer, Mini Motionlogger Actigraph; the tri-axial accelerometer Tritrac-R3 D; and an tri-axial accelerometer for movement registration (Tracmor) from our laboratory. RESULTS: There is no clear difference for correspondence between indirect calorimetry and accelerometer counts during level walking, whether one-axial or tri-axial and placed at the wrist, hip or low back. Sedentary activities are better re¯ected with a tri-axial accelerometer than with a one-axial accelerometer. Two accelerometers were validated in free living conditions with doubly labeled water. The highest correlation between accelerometer output and activity induced energy expenditure was found for Tracmor. CONCLUSIONS: From all accelerometers tested, the tri-axial accelerometer for movement registration is an objective method that can be used to distinguish differences in activity levels between individuals and assess the effect of interventions on physical activity within individuals.

show abstract

Section: Discussionmentioning

confidence: 96%

Physical activity assessment with accelerometers

1999

Int J Obes

225

150

View full text Add to dashboard Cite

show abstract

“…Chronic energy deficiency reduces AEE through a lower physical capacity with the loss of muscle mass. 15,35 Thus, TEE is less than half the value of 10 MJ per day for a women with average size and PAI. Chronic overeating induces weight gain, resulting in TEE values over 15 MJ per day for women and 20 MJ per day for men with morbid obesity, at least 50% higher than the value at average size and PAI.…”

Section: Discussionmentioning

confidence: 98%

“…In anorectic women, TEE can be below 5 MJ per day. 35 Undereating induces weight loss, resulting in a reduction in body size with a consequent reduction in REE. Chronic energy deficiency reduces AEE through a lower physical capacity with the loss of muscle mass.…”

Section: Discussionmentioning

confidence: 99%

Control of energy expenditure in humans

2016

View full text Add to dashboard Cite

Energy expenditure is determined by body size and body composition and by food intake and physical activity. Body size and body composition are the determinants of resting energy expenditure. Higher weight results in higher energy requirement through a higher resting requirement because of a higher maintenance cost of a larger body. Activity-induced energy expenditure is the most variable component of total energy expenditure. Smaller and leaner subjects generally move more as activity energy expenditure in larger subjects is not higher in proportion to the cost of moving with a higher body weight. Food intake induces changes in energy expenditure as a function of changes in body size and body composition. In addition, energy restriction induces an adaptive reduction of energy expenditure through a lowering of tissue metabolism and a reduction of body movement. An exercise-induced increase in activity expenditure is a function of the training status. In untrained subjects, exercise induces a larger increase in total energy expenditure than can be attributed to the energy cost of a training program. Trained subjects have a higher performance at the same expenditure through a higher exercise economy. INTRODUCTIONEnergy expenditure in humans is determined by body size and body composition, environment and behavior. A larger body, especially a larger fat-free mass, requires more maintenance and thus induces a higher basal metabolic rate or resting energy expenditure. The main environmental determinant of energy expenditure is ambient temperature, where energy expenditure increases in a cold environment through shivering and in a hot environment through panting. Behavioral determinants of energy expenditure include food intake and physical activity. In normal daily life, environmental factors like ambient temperature are negligible. We generally choose our environment to feel comfortable. We stay in the thermal neutral zone by controlling the temperature of our homes and dress according to climatic conditions when going out. Thus, this review is restricted to determinants including subject characteristics, food intake and physical activity.Total energy expenditure (TEE) can be split in three components: maintenance or resting energy expenditure (REE); energy expenditure for the processing of ingested food or diet-induced energy expenditure (DEE); and activity-induced energy expenditure (AEE). Here, control of energy expenditure is reviewed by comparing TEE and the three components in relation to differences for the subject characteristics body size and body composition, followed by reviewing effects of changes in food intake and changes in physical activity on energy expenditure.

show abstract

“…The variation in relative humidity was 53 -55%rh (Schoffelen et al, 1997). Physical activity was monitored by means of a radar system, based on the Doppler principle (Schoffelen et al, 1997), validated by Bouten et al (1995Bouten et al ( , 1996.…”

Section: Methodsmentioning

confidence: 99%

Energy metabolism in humans at a lowered ambient temperature

et al. 2002

View full text Add to dashboard Cite

Objective: Assessment of the effect of a lowered ambient temperature, ie 16 C (61 F), compared to 22 C (72 F), on energy intake (EI), energy expenditure (EE) and respiratory quotient (RQ) in men. Design: Randomized within-subject design in which subjects stayed in a respiration chamber three times for 60 h each, once at 22 C, and twice at 16 C, wearing standardized clothing, executing a standardized daily activities protocol, and were fed in energy balance (EBI): no significant difference between EE and EI over 24 h). During the last 24 h at 22 C, and once during the last 24 h at 16 C, they were fed ad libitum. Subjects: Nine dietary unrestrained male subjects (ages 24 AE 5 y, body mass index (BMI) 22.7 AE 2.1 kg=m 2 , body weight 76.2 AE 9.4 kg, height 1.83 AE 0.06 m, 18 AE 5% body fat). Results: At 16 C (EB), EE (total 24 h EE) was increased to 12.9 AE 2.0 MJ=day as compared to 12.2 AE 2.2 MJ=day at 22 C (P < 0.01). The increase was due to increases in sleeping metabolic rate (SMR; the lowest EE during three consecutive hours with hardly any movements as indicated by radar): 7.6 AE 0.7 vs 7.2 AE 0.7 MJ=day (P < 0.05) and diet-induced thermogenesis (DIT; EE-SMR, when activity induced energy expenditure as indicated by radar ¼ 0): 1.7 AE 0.4 vs 1.0 AE 0.4 MJ=day (P < 0.01). Physical activity level (PAL; EE=SMR) was 1.63 -1.68. At 16 C compared to at 22 C, rectal, proximal and distal skin temperatures had decreased (P < 0.01). RQ was not different between the two ambient temperature situations. During ad libitum feeding, subjects overate by 32 AE 12% (at 22 C) and by 34 AE 14% (at 16 C). Under these circumstances, the decrease of rectal temperature at 16 C was attenuated, and inversely related to percentage overeating (r 2 ¼ 0.7; P < 0.01). Conclusion:We conclude that at 16 C, compared to 22 C, energy metabolism was increased, due to increases in SMR and DIT. Overeating under ad libitum circumstances at 16 C attenuated the decrease in rectal core body temperature.

show abstract

Body mass index and daily physical activity in anorexia nervosa

Cited by 47 publications

References 18 publications

Physical activity assessment with accelerometers

Physical activity assessment with accelerometers

Control of energy expenditure in humans

Energy metabolism in humans at a lowered ambient temperature

Contact Info

Product

Resources

About