Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Spontaneous physical activity in a respiratory chamber is correlated to habitual physical activity
Autore:
Snitker, S; Tataranni, PA; Ravussin, E;
Indirizzi:
Univ Maryland, Sch Med, Div Endocrinol Diabet & Nutr, Baltimore, MD 21201 USA Univ Maryland Baltimore MD USA 21201 abet & Nutr, Baltimore, MD 21201 USA NIDDKD, Clin Diabet & Nutr Sect, NIH, Phoenix, AZ 85016 USA NIDDKD Phoenix AZ USA 85016 iabet & Nutr Sect, NIH, Phoenix, AZ 85016 USA Pennington Biomed Res Ctr, Baton Rouge, LA USA Pennington Biomed Res Ctr Baton Rouge LA USA es Ctr, Baton Rouge, LA USA
Titolo Testata:
INTERNATIONAL JOURNAL OF OBESITY
fascicolo: 10, volume: 25, anno: 2001,
pagine: 1481 - 1486
SICI:
0307-0565(200110)25:10<1481:SPAIAR>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENERGY-EXPENDITURE; WEIGHT-GAIN; OBESITY;
Keywords:
energy metabolism; indirect calorimetry; doubly labeled water; stable isotopes; non-exercise activity thermogenesis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Snitker, S Univ Maryland, Sch Med, Div Endocrinol Diabet & Nutr, 660 W Redwood St,Rm 498-B, Baltimore, MD 21201 USA Univ Maryland 660 W Redwood St,Rm498-B Baltimore MD USA 21201
Citazione:
S. Snitker et al., "Spontaneous physical activity in a respiratory chamber is correlated to habitual physical activity", INT J OBES, 25(10), 2001, pp. 1481-1486

Abstract

OBJECTIVE: During a stay in a respiratory chamber without an exercise protocol, physical activity is limited to activities of daily living, change ofposture and 'fidgeting,' collectively referred to as Spontaneous physical activity (SPA). SPA is quite variable among individuals and is a heritable trait. A low SPA during a chamber stay is a predictor of weight gain in men. However, it remains to be established whether physical activity in a respiratory chamber relates to physical activity under habitual, free-living conditions. The purpose of the present study was to determine whether physical activity in a chamber is correlated to habitual, free-living physical activity. DESIGN: Fifty healthy, non-diabetic Pima Indians (30 M/20 F, 30 +/- 6 y; 37 +/- 10% body fat; means +/- s.d.) completed a 24 h stay in the respiratory chamber followed by a 7 day measurement of habitual, free-living energy expenditure by doubly labeled water. Free-living physical activity was expressed as activity energy expenditure (AEE(FL); daily energy expenditure - (sleeping metabolic rate + thermic effect of food)), physical activity level (PAL(FL); daily energy expenditure/sleeping metabolic rate) and body-size independent activity units. Activity during the chamber stay was expressed as PAL(Ch), AEE(Ch), and based on radar sensor measurements, as percentage of time with activity (SPA(Radar)). RESULTS: AEE(FL) (averaging 930 +/- 310 kcal/day (3.89 +/- 1.30 MJ/day)) was correlated to AEE(CH) (averaging 440 +/- 160 kcal/day (1.84 +/- 0.67 MJ/day)) and higher in men than in women (r=0.53, P=0.003) and r=0.53, P=0.02,respectively). Likewise, PAL(FL) (averaging 1.75 +/- 0.21) was correlated to PAL(Ch) (averaging 1.42 +/- 0.10) and higher in men than in women (r=0.49, P=0.006 and r=0.42, P=0.02, respecitvely). Free-living activity expressed in body-size independent activity units (averaging 17.8 +/- 7.0) was correlated to SPA(Radar) (averaging 6.4 +/- 1.7) with no effect of sex (r=0.30,P=0.03). CONCLUSION: Physical activity in a respiratory chamber was correlated to habitual physical activity, whether expressed as AEE, PAL or body-size independent activity units, providing a plausible explanation for the demonstrated association between a low SPA in the chamber and weight gain. The study encourages further studies of the genetic and non-genetic determinants of SPA and non-exercise activity thermogenesis (NEAT).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/01/20 alle ore 14:43:13