The effects of Ramadan intermittent fasting on athletic performance: Recommendations for the maintenance of physical fitness.

Abstract. The behavioural modifications that accompany Ramadan intermittent fasting (RIF) are usually associated with some alterations in the metabolic, physiological, and psychological responses of athletes that may affect sport performance. Muslim athletes who are required to train and/or compete during the month-long, diurnal fast must adopt coping strategies that allow them to maintain physical fitness [...]

By |2017-05-21T03:18:10+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados en The effects of Ramadan intermittent fasting on athletic performance: Recommendations for the maintenance of physical fitness.

Significant and serious dehydration does not affect skeletal muscle cramp threshold frequency.

OBJECTIVE: Many clinicians believe that exercise-associated muscle cramps (EAMC) occur because of dehydration. Experimental research supporting this theory is lacking. Mild hypohydration (3% body mass loss) does not alter threshold frequency (TF), a measure of cramp susceptibility, when fatigue and exercise intensity are controlled. No experimental research has examined TF following significant (3-5% body mass [...]

By |2017-05-21T03:17:44+00:00enero 31st, 2013|Documentos científicos, Exercise and sport|Comentarios desactivados en Significant and serious dehydration does not affect skeletal muscle cramp threshold frequency.

Drinking water is associated with weight loss in overweight dieting women independent of diet and activity.

BACKGROUND: Data from short-term experiments suggest that drinking water may promote weight loss by lowering total energy intake and/or altering metabolism. The long-term effects of drinking water on change in body weight and composition are unknown, however. OBJECTIVE: This study tested for associations between absolute and relative increases in drinking water and weight loss over 12 months. METHODS AND PROCEDURES: Secondary analyses were conducted on data from the Stanford A TO Z weight loss intervention [...]

By |2017-05-21T03:18:10+00:00enero 31st, 2013|Body water content; body composition, Documentos científicos|Comentarios desactivados en Drinking water is associated with weight loss in overweight dieting women independent of diet and activity.

Replacing sweetened caloric beverages with drinking water is associated with lowerenergy intake.

OBJECTIVE: Reduced intake of sweetened caloric beverages (SCBs) is recommended to lower total energy intake. ReplacingSCBs with non-caloric diet beverages does not automatically lower energy intake, however. Compensatory increases in other food or beverages reportedly negate benefits of diet beverages. The purpose of this study was to evaluate drinking water as an alternative to SCBs. RESEARCH METHODS AND PROCEDURES: Secondary analysis of data from the Stanford A TO Z intervention evaluated change in beverage pattern [...]

By |2017-05-21T03:18:10+00:00enero 31st, 2013|Body water content; body composition, Documentos científicos|Comentarios desactivados en Replacing sweetened caloric beverages with drinking water is associated with lowerenergy intake.

The altered fluid distribution in obesity may reflect plasma hypertonicity.

OBJECTIVE: This study explored whether the increased extracellular relative to intracellular fluid (ECF/ICF) ratio in obesity mightreflect osmotic effects of elevated plasma solute concentrations. DESIGN: Cross-sectional, epidemiological survey. SETTING AND SUBJECTS: The present analysis used nationally representative data from the Third National Health and Nutrition Examination Survey on community-dwelling adults (aged 40-59 years) in the [...]

By |2017-05-21T03:18:10+00:00enero 31st, 2013|Documentos científicos, Regulation of water and electrolyte balance|Comentarios desactivados en The altered fluid distribution in obesity may reflect plasma hypertonicity.

Hydration in Advanced Cancer: Can Bioelectrical Impedance Analysis Improve the Evidence Base? A Systematic Review of the Literature.

CONTEXT: Decisions surrounding the administration of clinically assisted hydration to patients dying of cancer can be challenging because of the limited understanding of hydration in advanced cancer and a lack of evidence to guide health care professionals. Bioelectrical impedance analysis (BIA) has been used to assess hydration in various patient groupings, but evidence for its [...]

By |2017-05-21T03:17:46+00:00enero 31st, 2013|Cancer, Documentos científicos|Comentarios desactivados en Hydration in Advanced Cancer: Can Bioelectrical Impedance Analysis Improve the Evidence Base? A Systematic Review of the Literature.

Hydration Status of Arabic Adolescents and Young Men: Measurement, Evaluation, and a School-based Initiative to Improve Drinking Behaviour.

BACKGROUND. Despite the importance of hydration, limited research has been undertaken in Arabic populations. METHODS: Study 1: 88 adult military cadets and 32 school-based adolescents provided five sequential daily mid-morning urine samples. Hydration thresholds were produced using percentiles of estimated urine osmolality (Uosm) and urine color (Ucol). Study 2: 120 military cadets and 52 adolescents [...]

By |2017-05-21T03:18:12+00:00enero 31st, 2013|Behaviour: knowledge, understanding and attitudes of the population, Documentos científicos|Comentarios desactivados en Hydration Status of Arabic Adolescents and Young Men: Measurement, Evaluation, and a School-based Initiative to Improve Drinking Behaviour.

Hydration and cognitive performance.

A clinical link exists between severe dehydration and cognitive performance. Using rapid and severe water loss induced either by intense exercise and/or heat stress, initial studies suggested there were alterations in short-term memory and cognitive function related to vision, but more recent studies have not all confirmed these data. Some studies argue that water loss is not responsible for [...]

By |2017-05-21T03:18:30+00:00enero 31st, 2013|Documentos científicos, Hydration status: effects on physiology and metabolism|Comentarios desactivados en Hydration and cognitive performance.