Impact of physical activity during weekdays and weekends on fat mass among adults: 12-month cohort study
São Paulo med. j
;
138(3): 201-207, May-June 2020. tab, graf
Article
Dans Anglais
| LILACS, SES-SP
| ID: biblio-1139684
ABSTRACT
ABSTRACT BACKGROUND:
Physical activity (PA) practices seem to differ between weekdays and weekends and these pattern changes can affect body fat differently. However, previous studies did not assess the mediation effect of weekday and weekend PA on maintenance of body fat using sophisticated statistical models.OBJECTIVE:
To analyze the mediation effect of PA during weekdays and weekends on maintenance of fat mass over a 12-month follow-up. DESIGN ANDSETTING:
Longitudinal cohort study (12 months) conducted at a public university in Presidente Prudente, Brazil.METHODS:
A sample of 225 adults (117 females) was used. Body fatness and fat mass were assessed using dual-energy X-ray absorptiometry. PA levels were assessed using a pedometer. The statistical analysis consisted of paired-sample t tests, independent-sample t tests, Pearson correlations and mediation models.RESULTS:
After 12 months, weekend PA had decreased while body composition indicators remained stable (without changes). The correlation between fat mass at baseline and follow-up was high for both sexes (men 0.966; women 0.941; P-value = 0.001 for both). Moreover, PA indices were inversely but moderately related to fat mass at baseline and follow-up. Lastly, weekend PA mediated the association between fat mass at baseline and follow-up (P-value < 0.05) by around 2% and 4%.CONCLUSION:
Weekend PA mediated the association between fat mass at baseline and fat mass after one year of follow-up among these adults. Further studies are required to investigate the association between physical activity, body fat and other variables such as dietary patterns and sleep time.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Composition corporelle
/
Exercice physique
Type d'étude:
Etude d'étiologie
/
Etude d'incidence
/
Étude observationnelle
/
Étude pronostique
/
Facteurs de risque
Limites du sujet:
Adulte
/
Femelle
/
Humains
/
Mâle
Pays comme sujet:
Amérique du Sud
/
Brésil
langue:
Anglais
Texte intégral:
São Paulo med. j
Année:
2020
Type:
Article
Institution/Pays d'affiliation:
Lander University/US
/
Universidade Estadual Paulista/BR
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