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NUtrition and Running High MIlage Study

Prevalence in running events and running performance of endurance runners following a vegetarian or vegan diet compared to non-vegetarian endurance runners: The NURMI Study

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ISRCTN
Registry ID
ISRCTN73074080
Enrollment
10000
Registered
2015-06-12
Start date
2015-02-01
Completion date
Unknown
Last updated
2025-09-08

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

Conditions

Diet and running performance Nutritional, Metabolic, Endocrine

Interventions

We assess dietary and running habits, running events, as well as quality of life with online questionnaires only.

Sponsors

Zurich University (Institut für Hausarztmedizin der Universität Zürich)
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: For the epidemiological pre-study (Step 1) any subject active in running (any distance as well as any performance level) can participate. For successful participation in the main study (Step 2 & 3) a complete data set consisting of the following four items is required: 1. Written informed consent 2. At least 18 years of age 3. All NURMI questionnaires completed 4. Successful participation in a running event of either half-marathon or marathon distance

Exclusion criteria

Exclusion criteria: 1. Participation in other clinical trials simultaneously 2. Have impaired health status or known diseases 3. Use doping agents

Design outcomes

Primary

MeasureTime frame
In addition to running performance adjusted to performance level, the primary outcome is the prevalence of types of diets (omnivorous, vegetarian, vegan) among runners attending running events. Individual finishing time will be measured by the running events professional timing system and will be calculated as percentage of the overall winner’s time.

Secondary

MeasureTime frame
Outcomes from Step 1 are: nationality, sex, age, body weight, height, BMI (calculated), type of diet, attended races in past two years, finished running distances, personal best time on each distance, number of planned events for 2014/2015, in-race food and fluid consumption, daily/weekly training frequency, daily/weekly training load, period of preparation for main event, and aim of race participation. Outcomes from Step 2 are: years of running experience, motivation for running then and now, assisted training, years of race experience, training intensity, medium/long-term goal of racing, additional specific kinds of training, specific diet including supplements, specific training/diet prior to race, diet on day of rest/training/race, pre/in/post-race diet, specific gear, relevant medical measures, and quality of life and health-related behavior. Outcomes from Step 3 are: pre-race: body weight (including clothing and shoes). In-race: individual finishing time, individual runtime as % of overall winners time (calculated), ranking, calculated pace, temperature, wind, air pressure, humidity, sunlight. Post-race: body weight (including clothing and shoes), calculated weight loss, RPE (Borg) whole body/respiratory/legs, mental mood, fluid and nutrient intake including breakfast, and dietary strategy during race.

Countries

Austria, Germany, Switzerland

Contacts

Public ContactKatharina Wirnitzer
info@nurmi-study.com+ 43 (699) 10404244

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Mar 13, 2026