Tags

Type your tag names separated by a space and hit enter

The effect of graded levels of exercise on energy intake and balance in free-living men, consuming their normal diet.
Eur J Clin Nutr 2002; 56(2):129-40EJ

Abstract

OBJECTIVE

To assess the effect of graded increases in exercised-induced energy expenditure (EE) on appetite, energy intake (EI), total daily EE and body weight in men living in their normal environment and consuming their usual diets.

DESIGN

Within-subject, repeated measures design. Six men (mean (s.d.) age 31.0 (5.0) y; weight 75.1 (15.96) kg; height 1.79 (0.10) m; body mass index (BMI) 23.3(2.4) kg/m(2)), were each studied three times during a 9 day protocol, corresponding to prescriptions of no exercise, (control) (Nex; 0 MJ/day), medium exercise level (Mex; approximately 1.6 MJ/day) and high exercise level (Hex; approximately 3.2 MJ/day). On days 1-2 subjects were given a medium fat (MF) maintenance diet (1.6 x resting metabolic rate (RMR)).

MEASUREMENTS

On days 3-9 subjects self-recorded dietary intake using a food diary and self-weighed intake. EE was assessed by continual heart rate monitoring, using the modified FLEX method. Subjects' HR (heart rate) was individually calibrated against submaximal VO(2) during incremental exercise tests at the beginning and end of each 9 day study period. Respiratory exchange was measured by indirect calorimetry. Subjects completed hourly hunger ratings during waking hours to record subjective sensations of hunger and appetite. Body weight was measured daily.

RESULTS

EE amounted to 11.7, 12.9 and 16.8 MJ/day (F(2,10)=48.26; P<0.001 (s.e.d=0.55)) on the Nex, Mex and Hex treatments, respectively. The corresponding values for EI were 11.6, 11.8 and 11.8 MJ/day (F(2,10)=0.10; P=0.910 (s.e.d.=0.10)), respectively. There were no treatment effects on hunger, appetite or body weight, but there was evidence of weight loss on the Hex treatment.

CONCLUSION

Increasing EE did not lead to compensation of EI over 7 days. However, total daily EE tended to decrease over time on the two exercise treatments. Lean men appear able to tolerate a considerable negative energy balance, induced by exercise, over 7 days without invoking compensatory increases in EI.

Authors+Show Affiliations

The Rowett Research Institute, Bucksburn, Aberdeen, Scotland, UK. J.Stubbs@rri.sari.ac.ukNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

11857046

Citation

Stubbs, R J., et al. "The Effect of Graded Levels of Exercise On Energy Intake and Balance in Free-living Men, Consuming Their Normal Diet." European Journal of Clinical Nutrition, vol. 56, no. 2, 2002, pp. 129-40.
Stubbs RJ, Sepp A, Hughes DA, et al. The effect of graded levels of exercise on energy intake and balance in free-living men, consuming their normal diet. Eur J Clin Nutr. 2002;56(2):129-40.
Stubbs, R. J., Sepp, A., Hughes, D. A., Johnstone, A. M., Horgan, G. W., King, N., & Blundell, J. (2002). The effect of graded levels of exercise on energy intake and balance in free-living men, consuming their normal diet. European Journal of Clinical Nutrition, 56(2), pp. 129-40.
Stubbs RJ, et al. The Effect of Graded Levels of Exercise On Energy Intake and Balance in Free-living Men, Consuming Their Normal Diet. Eur J Clin Nutr. 2002;56(2):129-40. PubMed PMID: 11857046.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effect of graded levels of exercise on energy intake and balance in free-living men, consuming their normal diet. AU - Stubbs,R J, AU - Sepp,A, AU - Hughes,D A, AU - Johnstone,A M, AU - Horgan,G W, AU - King,N, AU - Blundell,J, PY - 2001/01/02/received PY - 2001/06/19/revised PY - 2001/06/22/accepted PY - 2002/2/22/pubmed PY - 2002/5/31/medline PY - 2002/2/22/entrez SP - 129 EP - 40 JF - European journal of clinical nutrition JO - Eur J Clin Nutr VL - 56 IS - 2 N2 - OBJECTIVE: To assess the effect of graded increases in exercised-induced energy expenditure (EE) on appetite, energy intake (EI), total daily EE and body weight in men living in their normal environment and consuming their usual diets. DESIGN: Within-subject, repeated measures design. Six men (mean (s.d.) age 31.0 (5.0) y; weight 75.1 (15.96) kg; height 1.79 (0.10) m; body mass index (BMI) 23.3(2.4) kg/m(2)), were each studied three times during a 9 day protocol, corresponding to prescriptions of no exercise, (control) (Nex; 0 MJ/day), medium exercise level (Mex; approximately 1.6 MJ/day) and high exercise level (Hex; approximately 3.2 MJ/day). On days 1-2 subjects were given a medium fat (MF) maintenance diet (1.6 x resting metabolic rate (RMR)). MEASUREMENTS: On days 3-9 subjects self-recorded dietary intake using a food diary and self-weighed intake. EE was assessed by continual heart rate monitoring, using the modified FLEX method. Subjects' HR (heart rate) was individually calibrated against submaximal VO(2) during incremental exercise tests at the beginning and end of each 9 day study period. Respiratory exchange was measured by indirect calorimetry. Subjects completed hourly hunger ratings during waking hours to record subjective sensations of hunger and appetite. Body weight was measured daily. RESULTS: EE amounted to 11.7, 12.9 and 16.8 MJ/day (F(2,10)=48.26; P<0.001 (s.e.d=0.55)) on the Nex, Mex and Hex treatments, respectively. The corresponding values for EI were 11.6, 11.8 and 11.8 MJ/day (F(2,10)=0.10; P=0.910 (s.e.d.=0.10)), respectively. There were no treatment effects on hunger, appetite or body weight, but there was evidence of weight loss on the Hex treatment. CONCLUSION: Increasing EE did not lead to compensation of EI over 7 days. However, total daily EE tended to decrease over time on the two exercise treatments. Lean men appear able to tolerate a considerable negative energy balance, induced by exercise, over 7 days without invoking compensatory increases in EI. SN - 0954-3007 UR - https://www.unboundmedicine.com/medline/citation/11857046/The_effect_of_graded_levels_of_exercise_on_energy_intake_and_balance_in_free_living_men_consuming_their_normal_diet_ L2 - http://dx.doi.org/10.1038/sj.ejcn.1601295 DB - PRIME DP - Unbound Medicine ER -