RT journal article
T1 Does Swimming at a Moderate Altitude Favor a Lower Oxidative Stress in an Intensity-Dependent Manner? Role of Nonenzymatic Antioxidants
A1 Casuso, Rafael A
A1 Aragón-Vela, Jerónimo
A1 López-Contreras, Gracia
A1 Gomes, Silvana N
A1 Casals Vázquez, Cristina
A1 Barranco-Ruiz, Yaira
A1 Mercadé, Jordi J
A1 Huertas, Jesús R.
A2 Didáctica de la Educación FísicaPlástica y Musical
K1 coenzyme Q10
K1 exercise
K1 hypoxia
K1 oxidative damage
K1 α-tocopherol
AB Does swimming at a moderate altitude favor a lower oxidative stress in an intensity-dependent manner? Role of nonenzymatic antioxidants. High-Alt Med Biol. 18:46-55, 2017.-we aimed to describe oxidative damage and enzymatic and nonenzymatic antioxidant responses to swimming at different intensities in hypoxia. We recruited 12 highly experienced swimmers who have been involved in competitive swimming for at least 9 years. They performed a total of six swimming sessions carried out at low (LOW), moderate (MOD), or high (HIGH) intensity at low altitude (630 m) and at 2320 m above sea level. Blood samples were collected before the session (Pre), after the cool down (Post), and after 15 minutes of recovery (Rec). Blood lactate (BL) and heart rate were recorded throughout the main part of the session. Average velocities did not change between hypoxia and normoxia. We found a higher BL in response to MOD intensity in hypoxia. Plasmatic hydroperoxide level decreased at all intensities when swimming in hypoxia. This effect coincided with a lower glutation peroxidase activity and a marked mobilization of the circulating levels of α-tocopherol and coenzyme Q10 in an intensity-dependent manner. Our results suggest that, regardless of the intensity, no oxidative damage is found in response to hypoxic swimming in well-trained swimmers. Indeed, swimmers show a highly efficient antioxidant system by stimulating the mobilization of nonenzymatic antioxidants.
PB Mary Ann Liebert
SN 1557-8682
YR 2017
FD 2017
LK http://hdl.handle.net/10498/31113
UL http://hdl.handle.net/10498/31113
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 12-nov-2026