Long-term swimming training modifies acute immune cell response to a high-intensity session.

Purpose: Long-term training influence on athletes' immune cell response to acute exercise has been poorly studied, despite the complexity of both chronic and acute adaptations induced by training. The purpose of the study is to study the influence of a 4-month swimming training cycle on the immune cell response to a high-intensity training session, during 24 h of recovery, considering sex, maturity, and age group.

Methods: Forty-three swimmers (16 females, 14.

Coordination between antioxidant defences might be partially modulated by magnesium status.

The aim of this study was to compare the redox balance in competitive adult swimmers against recreational practitioners, controlling for Mg intake. Fifteen, competitive swimmers and 16 recreational practitioners, all male and aged 18-25years, were recruited into the study. Oxidative and muscle damage markers, and antioxidant enzymes and non-enzymatic antioxidants were evaluated by photometry (except for thiobarbituric reactive substances (TBARS), which was assessed by fluorimetry).

Magnesium intake is associated with strength performance in elite basketball, handball and volleyball players.

Magnesium plays significant roles in promoting strength. Surveys of athletes reveal that intake of magnesium is often below recommended levels. We aimed to understand the impact of magnesium intake on strength in elite male basketball, handball, and volleyball players.

Magnesium and strength in elite judo athletes according to intracellular water changes.

Magnesium (Mg) deficiency strongly affects muscle performance. In judo, many athletes often undergo impressive weight changes associated with severe dehydration. Common practices used by athletes to achieve a target weight can lead to Mg deficit.

Exercise, magnesium and immune function.

Physical exercise may deplete magnesium, which together with a marginal dietary magnesium intake may impair energy metabolism, muscle function, oxygen uptake and electrolyte balance. Consequently, the ability to perform physical work may be compromised. Many aspects of immune function can be depressed temporarily by either a single bout of very severe exercise or a longer period of excessive training.

Genetic polymorphisms of angiotensin-I converting enzyme, haptoglobin and angiotensinogen and oxidative stress parameters in 12 to 15-year-old adolescents.

Background: Angiotensin-converting enzyme (ACE) I/D, haptoglobin (Hp) 1/2 and angiotensinogen (AGT) M235T gene polymorphisms have been associated with the risk of various cardiovascular conditions. Oxidative stress and reactive oxygen species have also been implicated in endothelial injury. In a randomly selected sample of healthy adolescents, we studied the relationship between these genetic polymorphisms and somatic characteristics, blood pressure and certain biochemical markers of oxidative stress.

Role of cellular magnesium in health and human disease.

The aim of this paper is to discuss, on the basis of an extensive literature review, the role of magnesium in health and disease. Magnesium is an essential cation playing a crucial role in many physiological functions. It is critical in energy-requiring metabolic processes, in protein synthesis, membrane integrity, nervous tissue conduction, neuromuscular excitability, muscle contraction, hormone secretion, and in intermediary metabolism.

[Erythrocytic acid phosphatase genetic polymorphism and cardiovascular risk in health children and adolescents].

Objective: To correlate, in a sample of healthy children and adolescents, the activity of the enzyme acid phosphatase (ACP) with its different genetic phenotypes and of these with some cardiovascular risk parameters such as body mass index (BMI), percentage of total fat mass (%TFM), trunk fat (TF), insulin resistance, and the arterial blood pressure (BP).

Design And Methods: The sample was composed of 173 healthy children and adolescents, 96 (55.5%) F and 77 (44.

[Ionized calcium and magnesium as interdependent variables in blood pressure origin in healthy adolescents].

Introduction: Growing evidence indicates that diet divalent cations--ionized calcium (Ca) and magnesium (Mg)--and MN blood group polymorphism may be associated with essential arterial hypertension.

Objectives: To assess a possible relationship between serum ionized Ca and Mg and MN blood group polymorphism with blood pressure (BP) and body mass index (BMI).

Population And Methods: The study group consisted of 173 healthy adolescents, 96 female (55.