ArticleSports medicine (Auckland, N.Z.)2026
Thermoregulation and Hydration Dynamics in a 160-km Ultra-Endurance Race in a Tropical Environment: A Field Study on 80 Runners.
Article in Sports medicine (Auckland, N.Z.), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05098925 (Study of Thermoregulatory Processes in Ultra-endurance Runners in a Hot and Humid Environment), which is not on this map. Cited by 2 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Study of Thermoregulatory Processes in Ultra-endurance Runners in a Hot and Humid Environment
Who cites it
2 citing papers in PubMed.
- Gastrointestinal temperature of elite and recreational adult runners during a 100-mile ultramarathon under heat exposure.Physiological reports · 2026Article
- Data-driven estimation of core body temperature during physical activity under heat exposure: A systematic review and standardized evaluation.Building and environment · 2026Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThis study investigated thermoregulation and hydration dynamics in 80 runners (33 women, 41.3%; 47 men, 58.7%) during a 160-km ultra-endurance race with 9400 m of elevation gain in a tropical environment, where ambient temperatures ranged from 10.2 °C to 28.3 °C and relative humidity varied between 35 and 100%.
methodsCore temperature (T
resultsMean T
conclusionsUltra-endurance runners maintained core temperatures < 40 °C despite significant body mass losses. These findings suggest that substantial body mass change may be a normal physiological adaptation during ultra-endurance running rather than a performance-limiting factor or a risk for hyperthermia. The study highlights the multifactorial nature of thermoregulation in ultra-endurance events and supports the need for individualized hydration strategies based on field data from prolonged, real-world conditions. The study was registered on ClinicalTrials.gov (NCT05098925).
Indexed as
Identifiers
41343039What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.