RT journal article
T1 Accelerometer-measured physical activity and sedentary time are associated with maximal fat oxidation in young adults
A1 Corral Pérez, Juan
A1 Velázquez Díaz, Daniel
A1 Pérez-Bey, Alejandro
A1 Montes de Oca García, Adrian
A1 Fernandez Santos, Jorge R.
A1 Amaro-Gahete, Francisco J.
A1 Jiménez Pavón, David
A1 Casals Vázquez, Cristina
A1 Ponce González, Jesús Gustavo
A2 Didáctica de la Educación FísicaPlástica y Musical
K1 Metabolic flexibility
K1 accelerometry
K1 lifestyle patterns
K1 lipid oxidation
K1 obesity
K1 sedentary behaviour
AB The present work aimed to examine the association between physical activity (PA) and sedentary behaviour with maximal fat oxidation (MFO) in young individuals. A total of 77 active adults (30 women; 22.8 ± 4.5 years) were included in this cross-sectional study in which PA and sedentary behaviour were measured using accelerometers for 7 consecutive days. PA was classified into different intensities (i.e. light, moderate, vigorous, and moderate-to-vigorous) and sedentary behaviour into sedentary time (i.e. time, number of bouts, and length of bouts) and sedentary breaks (i.e. time, number of breaks, and length of breaks). MFO was determined using a graded cycloergometer test through indirect calorimetry and relativized to lean mass (MFOLM) and lean leg mass (MFOLL). Positive associations were found for light and vigorous PA in relation with MFO, MFOLM and MFOLL, independently of cofounders (P ≤ 0.01). Moreover, a negative association was found between MFO and MFOLM and the length of sedentary bouts which was accentuated after adjusting by cardiorespiratory fitness (P ≤ 0.05). These results suggest that light and vigorous PA and sedentary behaviour are related to MFO during exercise. Despite this, further interventional studies are needed to clarify if increments of light and vigorous PA could enhance MFO in different populations.
PB Taylor and Francis Ltd.
SN 1536-7290
YR 2022
FD 2022
LK http://hdl.handle.net/10498/31037
UL http://hdl.handle.net/10498/31037
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026