Assessment Of The OmiusTMCooling Headband On 5-km Running Performance In The Heat
Bibliographic record
Abstract
Exercise performed under hot/humid conditions can hinder endurance performance. The use of cooling strategies under these conditions can be advantageous. The OmiusTM headband is purported to reduce the perception of heat and improve performance. It is used by athletes but has not received scientific attention. PURPOSE: Examine the impact of the OmiusTM headband on selected thermal and cardiovascular functions and subjective perceptions and running performance. METHODS: Using a randomized crossover protocol, 10 trained male athletes (28 ± 4 yrs) completed two trials (COOL: OmiusTMheadband, CON: sham headband, 35.0 ± 0.3 °C, 56 ± 3% relative humidity, wind: 13.4 ± 2.0 km/h) comprising a preload period of 70 min of running at 60% VO2max followed by a 5-km running time-trial (TT). In both trials, the headband was sprayed with 6 mL of 20 °C water every 10 min. Participants consumed 500 mL/70 kg body mass/h of water (20 °C) during the preload exercise. RESULTS: Participants started the trials similarly hydrated, as indicated by the non-significant differences in capillary blood osmolality prior to the COOL and CON trials. Body mass loss at the end of the TT was not significantly different between COOL (3.7 ± 0.4%) and CON (3.6 ± 0.2%). Heart rate, aural canal temperature and perceived exertion and whole-body thermal comfort did not significantly differ between COOL and CON during the preload and TT periods. Rectal temperature was significantly lower with CON (− 0.18 ± 0.17 °C) than COOL prior to the preload period; this significant difference persisted during the preload period. Rectal temperature did not differ significantly between conditions during the TT. Forehead temperature was significantly lower with COOL than CON during the preload, but no significant difference was observed at the end of the TT. Perceived forehead thermal comfort was only significantly lower with COOL than CON during the preload period. TT time did not significantly differ between COOL (19.8 ± 1.2 min) and CON (20.2 ± 1.0 min). CONCLUSIONS: In hot/humid conditions, the OmiusTM headband does not improve heart rate, forehead, rectal and aural canal temperatures, perceived exertion, whole-body and forehead thermal comfort and performance during a 5 km running TT preceded by 70 min of moderate-intensity running.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".