Effect of a vegan diet on the performance, risk and nutrient parameters of male volleyball players

Effect of a vegan diet on the performance, risk and nutrient parameters of male volleyball players - Volleyball-Vegan-Studie

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00014378

Enrollment

Registered

2018-04-24

Start date

2018-01-09

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

young healthy athletes

Interventions

Group 1: Arm 1: Subjects completely change their nutrition to vegan diet for the period of twelve weeks. During this period each subject is asked to conduct a three-day nutritional protocol (thrice) a

Eligibility

Sex/Gender

Male

Age

14 Years to 25 Years

Inclusion criteria

Inclusion criteria: Volleyball player at the sports club "ASV Dachau e. V."

Exclusion criteria

Exclusion criteria: vegan diet before the beginning of the study; diagnosed metabolic diseases; regular medication intake; current therapy with folic acid or vitamin B12

Design outcomes

Primary

Measure	Time frame
At the beginning and at the end of the intervention, the following performance parameters are recorded by perfomance diagnostics: springiness (lower limb strength), upper limb strength and responsiveness. The diagnostics are carried out in the performance center of the Olympic training center Bavaria. At the beginning and at the end of the intervention, 30 mL of whole blood are taken from the subjects to examine the following risk parameters: blood lipids (total cholesterol, LDL, HDL, TC). Furthermore, various nutrient parameters (hematocrit, RBC, MCV, Hb, serum ferritin), serum zinc, magnesium (serum) as well as the nutrient supply (iron, zinc, magnesium, folate, vitamin B2 and vitamin B6) of the subjects are recorded by a trhee-day consumption weighting protocol before, during and at the end of the intervention. All foods and drinks consumed during these three days must be weighed and recorded.	—

Measure

Time frame

At the beginning and at the end of the intervention, the following performance parameters are recorded by perfomance diagnostics: springiness (lower limb strength), upper limb strength and responsiveness. The diagnostics are carried out in the performance center of the Olympic training center Bavaria. At the beginning and at the end of the intervention, 30 mL of whole blood are taken from the subjects to examine the following risk parameters: blood lipids (total cholesterol, LDL, HDL, TC). Furthermore, various nutrient parameters (hematocrit, RBC, MCV, Hb, serum ferritin), serum zinc, magnesium (serum) as well as the nutrient supply (iron, zinc, magnesium, folate, vitamin B2 and vitamin B6) of the subjects are recorded by a trhee-day consumption weighting protocol before, during and at the end of the intervention. All foods and drinks consumed during these three days must be weighed and recorded.

—

Countries

Germany

Contacts

Public ContactOliver Brand

Justus Liebig Universität

oliver.brand@ernaehrung.uni-giessen.de064113272218

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026