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Titolo:
ENERGY-REQUIREMENTS OF MIDDLE-AGED MEN ARE MODIFIABLE BY PHYSICAL-ACTIVITY
Autore:
BUNYARD LB; KATZEL LI; BUSBYWHITEHEAD MJ; WU Z; GOLDBERG AP;
Indirizzi:
BALTIMORE VET AFFAIRS MED CTR,CTR GERIATR RES EDUC & CLIN,BT-18-GR,10N GREENE ST BALTIMORE MD 21201 BALTIMORE VET AFFAIRS MED CTR,GERIATR SERV BALTIMORE MD 21201 UNIV MARYLAND,SCH MED,DEPT MED,DIV GERONTOL BALTIMORE MD 21201 JOHNS HOPKINS BAYVIEW MED INST,DIV GERIATR BALTIMORE MD 00000 JOHNS HOPKINS BAYVIEW MED INST,DIV GERONTOL BALTIMORE MD 00000
Titolo Testata:
The American journal of clinical nutrition
fascicolo: 5, volume: 68, anno: 1998,
pagine: 1136 - 1142
SICI:
0002-9165(1998)68:5<1136:EOMMAM>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
RESTING METABOLIC-RATE; HEALTHY ELDERLY PERSONS; BODY-COMPOSITION; OLDER MEN; EXERCISE; EXPENDITURE; FITNESS; INDIVIDUALS; HUMANS;
Keywords:
AGING; ENERGY REQUIREMENTS; EXERCISE TRAINING; MAXIMAL OXYGEN UPTAKE; VO(2)MAX; DECONDITIONING; WEIGHT LOSS; MEN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
L.B. Bunyard et al., "ENERGY-REQUIREMENTS OF MIDDLE-AGED MEN ARE MODIFIABLE BY PHYSICAL-ACTIVITY", The American journal of clinical nutrition, 68(5), 1998, pp. 1136-1142

Abstract

Background: Energy requirements for weight maintenance decrease with age. Often, this decline is not proportionately matched by reduced energy intake, resulting in weight gain. Objective: We hypothesized that energy requirements for total daily weight maintenance in healthy, sedentary, middle-aged men would increase after regular aerobic exercise or aerobic exercise plus weight loss to levels comparable with those in middle-aged athletes. Design: Weight-maintenance energy requirementswere determined during weight stability (+/-0.25 kg) in 14 lean, sedentary (LS) men; 18 obese, sedentary (OS) men; and 10 male athletes of comparable ages ((x) over bar +/- SEM: 58 +/- 1 y). Studies were done at baseline and after 6 mo of aerobic exercise (LS men) or aerobic exercise plus weight loss (OS men) or 3 mo of deconditioning (athletes). Results: The interventions raised maximal oxygen uptake ((V) over dot O(2)max) by 15% in the LS men and by 13% in the OS men and decreased it by 14% in athletes tall P< 0.01), eliminating the differences among groups at baseline. Body fat was reduced significantly in LS and OS men; fat-free mass decreased in OS men. Average daily energy requirements increased by 8% in LS men and by 5% in OS men (both P< 0.01) to levels comparable with the baseline requirements of athletes and correlated with (V) over dot O(2)max (r(2) = 0.22, P< 0.0001) and fat-free mass(r(2) = 0.05, P< 0.02) across the range of (V) over dot O(2)max achieved by all subjects. Conclusions: Under free-living conditions, aerobic exercise eliminated the difference in weight-maintenance energy requirements between middle-aged sedentary and athletic men, suggesting that energy requirements of healthy, middle-aged men are modifiable by regular physical activity.

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Documento generato il 27/11/20 alle ore 01:45:34