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Hydration and youth

Andrea Giorgi, Maurizio Vicini, Luca Pollastri, Erica Lombardi, Emilio Magni, Andrea Andreazzoli, Marco Orsini, Marco Bonifazi, Henry Lukaski, Hannes Gatterer
Bioelectrical impedance vector-analysis (BIVA) describes cell-mass, cell function and hydration status of an individual or a group. The goal of the present investigation was to provide bioelectrical impedance data for 525 male road cyclists (155 professionals, 79 elite, 59 elite-youth, and 232 amateurs) at the time of their optimal performance level. Data were plotted on the resistance-reactance (R-Xc) graph to characterize cyclists group vectors using BIVA. Compared to the general male population, the mean vector position of the road cyclists indicates a higher body cell mass (BCM) and phase angle (p<0...
April 30, 2018: Journal of Sports Sciences
Damir Zubac, Drazen Cular, Uros Marusic
PURPOSE: To determine the reliability and diagnostic accuracy of noninvasive urinary dehydration markers in field-based settings on a day-to-day basis in elite adolescent amateur boxers. METHODS: Sixty-nine urine samples were collected daily from 23 athletes (17.3 ± 1.9 y) during their weight-stable phase and analyzed by field and laboratory measures of hydration status. Urine osmolality (UOSM ), urine specific gravity (USG ), total protein content (TPC ), and body-mass stability were evaluated to determine fluid balance and hydration status...
March 1, 2018: International Journal of Sports Physiology and Performance
Zachary Y Kerr, Emily Kroshus, Joseph G L Lee, Susan W Yeargin, Thomas P Dompier
An integral part of the Heads Up Football (HUF) educational program is the Player Safety Coach (PSC), who is responsible for teaching other coaches within a youth football league about safer blocking/tackling and injury prevention. This study examines the association between youth football coaches' interactions with the PSC (i.e., attending the PSC clinic at the beginning of the season and seeing the PSC on-field during practices) and their subsequent implementation of the HUF educational program. Data were collected via online questionnaire completed by 1,316 youth football coaches from HUF leagues...
March 2018: Health Promotion Practice
Gabrielle Miller, Caitlin Merlo, Zewditu Demissie, Sarah Sliwa, Sohyun Park
Beverages play an important role in the diets of adolescents because they help to maintain hydration and can provide important nutrients, such as calcium, vitamin D, and vitamin C (1). However, some beverages, such as sugar-sweetened beverages (SSBs) (e.g., soda or pop), provide calories with no beneficial nutrients. Beverage consumption patterns among American youth have changed over time; however, little is known about differences in consumption of various beverages by demographic characteristics such as grade in school, free/reduced price lunch eligibility, and race/ethnicity (2)...
February 3, 2017: MMWR. Morbidity and Mortality Weekly Report
Julien Caquot, Anaick Perrochon, Jean-Luc Bugeaud, Xavier Dumélié, François Duzou, Jean-Christophe Daviet
OBJECTIVE: Jumper's knee is extremely common among basketball players of high-level even in the youth categories, with adverse consequences for the continuation of the practice. To establish a preventive educational action, we have sought to examine the cognitive representations of the players concerning the patellar tendinopathy. OBJECTIVE: Raise an appraisal of presentations and ideas accepted from the basketball players participants in the championship of France hope concerning the prevention of the patellar tendinothy (PT)...
September 2016: Annals of Physical and Rehabilitation Medicine
Laurent Chapelle, Bruno Tassignon, Dirk Aerenhouts, Patrick Mullie, Peter Clarys
BACKGROUND: The hydration status of elite female soccer players is a concern, especially during high-volume training periods or tournaments. Furthermore, scientific literature on this topic is scarce to non-existent. Therefore, the primary aim of this study was to evaluate the hydration status in elite youth female soccer players during an official tournament. The secondary aim was to identify a possible relationship between pre-training hydration status and fluid intake. METHODS: Eighteen players were followed during eight consecutive days...
September 2017: Journal of Sports Medicine and Physical Fitness
María Del Pilar Milke-García
Adulthood starts after youth and is characterized by the completion of growth and the achievement of organic and psychological maturity. Obesity and other preventable diseases related to lifestyle are common at this age. A complete, balanced and sufficient diet, together with exercise are important in order to prevent and treat these diseases. Several studies have brought about the mechanisms by which the incorporation of milk and dairy products to diet is beneficial in order to prevent and treat these diseases...
September 2016: Gaceta Médica de México
Nesli Ersoy, Gulgun Ersoy, Mehmet Kutlu
BACKGROUND: The purpose of the study is to determine and compare the hydration status with different methods and determine fluid intake, dehydration percentages and sweat rate of 26 young male soccer players (15 ± 1.2 years) before an important competition. More specifically, the study aims at validating the urine strip and advising the players to use it as an easy and practical method. METHODS: Measurements of urine analysis were taken from the urine sample of the participants before breakfast and conducted for 3 consecutive days before the competition...
2016: Journal of the International Society of Sports Nutrition
Damir Zubac, Tomislav Antelj, Dragana Olujic, Vladimir Ivancev, Shawnda A Morrison
This study investigated (i) the prevalence of hypohydration and (ii) association between urinary indices of hydration status and confounding factors (e.g., urine protein content, water intake) in elite youth boxers during their weight-stable phase before competition. Sixteen national champion boxers (all male, 17 ± 1 y) were measured on 3 occasions (baseline, day 3, day 10), 30-day prior to competition. Body mass, total body water, urine specific gravity (USG), osmolality (UOSM) and total protein content (TPC) were evaluated to determine hydration status and fluid balance...
April 2017: Journal of Sports Sciences
Michael F Bergeron
Hydration is arguably among the foremost priorities youth athletes, parents, and coaches habitually consider as vital for sports. Insufficient hydration and a resultant measurable sweat-induced body water deficit can negatively affect performance and, in some athletic scenarios, can be a danger to a young athlete's health and safety, especially during vigorous physical activity in a warm-to-hot environment. Accordingly, it is essential to be well hydrated prior to practice, training, and competition and minimize total body water deficits incurred while being mindful of the greater sweat losses and hydration needs/challenges that accompany physical growth and maturation...
July 2015: Current Sports Medicine Reports
Deena Zytnick, Sohyun Park, Stephen J Onufrak
PURPOSE: To examine caregiver and youth attitudes about sports drinks (SDs) and the association of those attitudes with youth SD intake. DESIGN: Study design was cross-sectional. The online YouthStyles survey was sent to youth (ages 12-17 years) whose caregivers completed the online Summer ConsumerStyles survey for adults. SETTING: The 2011 Styles survey data comprised the setting. SUBJECTS: The sample was composed of 815 U...
January 2016: American Journal of Health Promotion: AJHP
Damir Zubac, Hrvoje Karninčić, Marko Žaja
BACKGROUND: Weight cutting is a common practice in amateur boxing with the purpose of taking advantage of rivals competing in weight divisions below the athlete's normal weight. Dehydration is a common weight-manipulating technique in boxing, and is known as a serious health-threatening behavior. In this study, we investigated field hydration status differences between the weight class categories in elite junior boxers. METHODS: The sample of subjects included 21 male junior boxers from Croatia, Germany and Hungary (all national team members)...
June 2016: Journal of Sports Medicine and Physical Fitness
Saun M Phillips, Dave Sykes, Neil Gibson
The objective of the study was to investigate the hydration status and fluid balance of elite European youth soccer players during three consecutive training sessions. Fourteen males (age 16.9 ± 0.8 years, height 1.79 ± 0.06 m, body mass (BM) 70.6 ± 5.0 kg) had their hydration status assessed from first morning urine samples (baseline) and pre- and post-training using urine specific gravity (USG) measures, and their fluid balance calculated from pre- to post-training BM change, corrected for fluid intake and urine output...
December 2014: Journal of Sports Science & Medicine
Kristin A Kullgren, Penny Scholl, Kelley M Kidwell, S Paul Hmiel
Hydration is important post-renal transplant to maintain adequate renal perfusion and graft function. Adherence to fluid recommendations is challenging given barriers to staying hydrated. There are no studies of adherence to fluid intake recommendations following pediatric renal transplant. Through this pilot study, we sought to determine whether the use of a commercially available interactive water bottle would lead to better adherence to recommended fluid intake and improved kidney functioning post-transplant relative to standard of care...
February 2015: Pediatric Transplantation
L Robert
Hyaluronan (hyaluronic acid, HA) is a ubiquitous linear polysaccharide endowed with some exceptional physicochemical properties such as strong hydration and viscoelasticity that depend on the size of the molecule. It plays a variety of important physiological roles in tissue hydration and mechanical protection, for example in the umbilical cord, skin and most other tissues. Since its large scale preparation and the invention by E.A. Balazs of the preparation of its non-inflammatory fraction (NIF-NaHA), there have been several important medical and cosmetic applications, most notably of viscosurgery for eye operation, intra-articular injections for osteoarthritis and also for wrinkle filling on the face, as well as for drug administration...
February 2015: Pathologie-biologie
Giannis Arnaoutis, Stavros A Kavouras, Athanasia Angelopoulou, Chara Skoulariki, Stefani Bismpikou, Stamatis Mourtakos, Labros S Sidossis
Although there are many studies demonstrating a high percentage of adult athletes who start exercise in suboptimal hydration state, limited data concerning hydration levels in athletic youth exist. The purpose of this study was to identify the hydration status of elite young athletes of different sports, during a typical day of training. Fifty-nine young elite male athletes from different sports (basketball, gymnastics, swimming, running, and canoeing) participated in the study (age: 15.2 ± 1.3 years; years of training: 7...
December 2015: Journal of Strength and Conditioning Research
George D Harris, Russell D White
Diabetes mellitus is the most common group of metabolic diseases and is characterized by hyperglycemia resulting from defects in insulin secretion, insulin action, or both. Most patients with diabetes are type 2 (90%); the remaining patients have type 1 disease. Athletes with diabetes range from the athlete participating in various youth sports to the competitive Olympic athlete and present a significant challenge to themselves and the medical staff who care for them on a daily basis. Each sport and the type of exercise have their own effects on diabetes management with numerous factors that significantly affect glucose levels, including stress, level of hydration, the rate of glycogenolysis and gluconeogenesis, and the secretion of counter-regulatory hormones...
November 2012: Current Sports Medicine Reports
Daryl A Rosenbaum, Stephen W Davis
BACKGROUND: Little information is available to guide the selection, preparation, and support of a traveling team physician. PURPOSE: To determine the types of injuries and medical problems, as well as general team health and performance issues, encountered by physicians traveling internationally with youth national soccer teams. STUDY DESIGN: Descriptive epidemiology. METHODS: Physicians assigned to travel abroad with the under-17 men's and women's US national soccer teams during a 2-year period documented all encounters with team and staff members...
May 2011: Sports Health
S Tamburic, P Grant-Ross, M Labedzka, G Daniels
This study was a pilot project, set up to assess ageing skin using a multi-disciplinary approach. The main aim of this study was to evaluate whether the use of more radical ('medical') treatments in the management of skin ageing would bring superior results and ultimately make people look younger, than the use of cosmetics ('non-medical' treatments). A simple post-hoc study design was used, whereby medical treatments varied within the group, all of them completed at least 2 weeks before the start of the study...
October 2012: International Journal of Cosmetic Science
Craig A Williams, Jamie Blackwell
The purpose of the study was to determine the hydration status, fluid intake, and electrolyte losses of 21 male professional youth soccer players (age 17.1 ± 0.7 y) training in a cool environment. Pretraining and posttraining measurements of body mass, urine (freezing-point osmolality method), and sweat concentration (flame-emission spectroscopy) were collected. Fourteen players were found to be hypohydrated before training. The amount of fluid lost due to exercise equated to a 1.7% loss in body mass, which equated to a gross dehydration loss of 0...
December 2012: International Journal of Sports Physiology and Performance
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