Wirksamkeit von Bildung im Vergleich zu Bildung plus verordneter Flüssigkeitsaufnahme auf den Flüssigkeitszufuhrstatus bei High-School-Sportlern
Sports science testing by investigators at Gatorade Sports Science Institute has revealed that many athletes arrive at practice with a high urine specific gravity indicating they are hypohydrated. Though the data showed that most athletes don't lose more than 2% of their body weight in sweat during a training session, it is not known what the cumulative effects of living and training in a hot environment are over the course of a week. Previous research has indicated that prescribing fluid intake is more effective than education in improving drinking behavior during exercise. No studies to date have compared the impact of fluid intake prescription versus education in adolescent boys and girls playing outdoor and indoor sports.
Comparing sexes and training environment may provide more clarity around potential barriers and challenges to proper hydration for each environment.
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Detaillierte Beschreibung
This study will implement a parallel design with 4 sports team groups: 1) Indoor girls, 2) Indoor boys, 3) Outdoor girls, and 4) Outdoor boys. Each group of 36 per groups will be randomized into 1 of 3 conditions: 1) control (no intervention), 2) hydration education intervention, 3) prescribed hydration and education intervention. Athletes will be observed for three practices per week for 2 weeks. Practices are separated by at least 48 hours.
Studientyp
Einschreibung (Tatsächlich)
Phase
- Unzutreffend
Kontakte und Standorte
Studienorte
-
-
Florida
-
Bradenton, Florida, Vereinigte Staaten, 34210
- Gatorade Sports Science Institute (GSSI) at IMG Sports Academy
-
-
Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Inclusion Criteria:
- Females and males between the ages of 13-19 years old
- Non-smoker
- Currently enrolled in the IMG sports program
- Able to give verbal and written informed consent for participation as well as obtain parental consent if <18 years of age
- Must be fluent in English reading, writing, and speaking
- Parental permission
Exclusion Criteria:
- Expulsion from school for any reason
- Leaving the IMG sports program
- Pregnant or planning to become pregnant
- Illness or injury that impacts sport participation or fluid balance
- Taking any medication that impacts fluid balance
- Participation in a clinical trial within past 30 days
- Participation in any PepsiCo trial within past 6 months
- Any condition the study investigator believes would interfere with eligibility following the study protocol, effect the study results, or put the subject at undue risk
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Grundlegende Wissenschaft
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Keine (Offenes Etikett)
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
|---|---|
|
Kein Eingriff: Control
No hydration education or fluid prescription. Pre-practice urine specific gravity (USG), pre- and post-practice body mass, thirst scale measures. Fluid intake during practice (whatever the team is drinking) . |
|
|
Experimental: Hydration Education between Week 1 and Week 2
In-depth education session regarding the effects of dehydration, the performance benefits of proper hydration, and how to properly hydrate before, during, and after activity. Pre-practice urine specific gravity (USG), pre- and post-practice body mass, thirst scale measures. Fluid intake during practice (whatever the team is drinking). |
30-60 minutes |
|
Experimental: Hydration Education between Week 1 and Week 2 plus Prescribed Hydration Week 2
In-depth education session regarding the effects of dehydration, the performance benefits of proper hydration, and how to properly hydrate before, during, and after activity. Pre-practice urine specific gravity (USG), pre- and post-practice body mass, thirst scale measures. Provided a standard amount of bottled water to drink the evening prior (1 liter) and in the two hours before practice (20 oz). Fluid intake will be recorded in an intake log. Subjects will be permitted to eat or drink whatever they like in addition to the prescribed fluid. Fluid intake during practice (whatever the team is drinking). |
30-60 minutes Prescribed amount of bottled water the evening prior and 2 hours prior to team practice |
Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
urine specific gravity (USG).
Zeitfenster: Pre-practice x 3 practices in Week 1 and 3 practices in Week 2
|
Assessed using hand-held refractometer, units recorded to the nearest 0.001 |
Pre-practice x 3 practices in Week 1 and 3 practices in Week 2
|
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Body weight
Zeitfenster: Change from pre-practice to post-practice x 3 practices in Week 1 and 3 practices in Week 2
|
Assessed using Tanita portable scale, units recorded to the nearest 0.01 kg |
Change from pre-practice to post-practice x 3 practices in Week 1 and 3 practices in Week 2
|
|
Fluid intake Week 2 (measured for Prescription Group only)
Zeitfenster: Intake from evening before through post-practice x 3 practices in Week 2
|
Assessed using beverage weight scale. Units recorded to the nearest 1 ml |
Intake from evening before through post-practice x 3 practices in Week 2
|
|
Thirst questionnaire
Zeitfenster: Change from pre-practice to post-practice x 3 practices in Week 1 and 3 practices in Week 2
|
6 items (thirst, pleasure to drink now, mouth feel, taste, stomach fullness, stomach sickness) each anchored from not at all to very, each on a 100 mm scale. |
Change from pre-practice to post-practice x 3 practices in Week 1 and 3 practices in Week 2
|
Mitarbeiter und Ermittler
Sponsor
Ermittler
- Hauptermittler: Kris Osterberg, PhD, RD, PepsiCo R&D Life Sciences, Sports Science
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Pathologische Prozesse
- Stoffwechselerkrankungen
- Wasser-Elektrolyt-Ungleichgewicht
- Pathologische Zustände, Anzeichen und Symptome
- Ernährungs- und Stoffwechselerkrankungen
- Austrocknung
- Motorik
- Verhalten
- Anorganische Chemikalien
- Anionen
- Ionen
- Elektrolyte
- Hydroxide
- Alkalien
- Oxide
- Sauerstoffverbindungen
- Wasser
Andere Studien-ID-Nummern
- PEP-2406
Plan für individuelle Teilnehmerdaten (IPD)
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