Effects of Time Point of Pre-Competitions Peaking on Performance in Major-Competitions.

To study the effects of the time points of pre-competition peaking (TPCP, the time point when an athlete's peaking shows up before a major-competition) on the athletes' performances in the major-competition (M-Performance). Mixed design. We used cluster analysis to classify 892 elite track and field athletes who participated in the 2017 and 2019 IAAF World Championships in Athletics, based on their TPCP and other related factors.

Mechanism of interleukin-1β-induced proliferation in rat hepatic stellate cells from different levels of signal transduction.

Hepatic stellate cells (HSCs) are the major producers of collagen in the liver. Their conversion from resting cells to proliferative, contractile, and activated cells is a critical step leading to liver fibrosis that is characterized by the deposition of excessive extracellular matrix. Interleukin-1 (IL-1) may play a role in maintaining HSC in a proliferative state that is responsible for hepatic fibrogenesis.

Chemiluminescence evaluation of oxidative damage to biomolecules induced by singlet oxygen and the protective effects of antioxidants.

A chemiluminescence (CL) method was developed for the evaluation of oxidative damage to biomolecules induced by singlet oxygen ((1)O(2)) and for the evaluation of the protective effects of antioxidants. The (1)O(2) was generated from the reaction of H(2)O(2)+OCl(-). Results showed that the CL signal from the reaction of H(2)O(2)+OCl(-) was weak, however, it was enhanced dose-dependently with the addition of DNA and unsaturated fatty acid, respectively.