Is this you? As a journalist, you can create a free Muck Rack account to customize your profile, list your contact preferences, and upload a portfolio of your best work.
Claim your profile
Articles by Ivan Cuk
Pacing profiles and slowdown patterns in ultra-triathlon performance
Abstract Pacing in long-distance triathlon has been studied primarily for cycling and running in IRONMAN triathlon and daily-format ultra-triathlons, as managing fatigue is critical for success. However, no study has analysed pacing across all three disciplines in an ultra-triathlon such as the second-longest non-stop triathlon format, the Double Deca Iron ultra-triathlon covering 76 km swimming, 3600 km cycling, and 844 km running.
Sex differences in performance and pacing in the greatest Quintuple Iron ultra-triathlon race in history: The IUTA World Championship 2024 in France
Citation: Knechtle B, Leite LB, Duric S, Cuk I, Andrade MS, Scheer V, et al. (2025) Sex differences in performance and pacing in the greatest Quintuple Iron ultra-triathlon race in history: The IUTA World Championship 2024 in France. PLoS One 20(9): e0331563. https://doi.org/10.1371/journal.pone.0331563 Editor: Ratko Peric, Orthopedic Clinic Orthosport, BOSNIA AND HERZEGOVINA Received: June 10, 2025; Accepted: August 15, 2025; Published: September 3, 2025 Copyright: © 2025 Knechtle et al.
Sex-specific differences in performance and pacing in the world’s longest triathlon in history - Scientific Reports
Abstract Sex differences in performance and pacing in triathlon have been studied for IRONMAN triathlons (3.8 km swimming, 180 km cycling and 42.195 km of running) and ultra-triathlons (i.e. Double-, Triple-, Quintuple- and Deca Iron ultra-triathlons) corresponding to 2x, 3x, 5x and 10x the IRONMAN triathlon distance.
Change in elevation predicts 100 km ultra marathon performance - Scientific Reports
Abstract The 100-km ultra-marathon is one of the most popular ultra-marathon distances. While we have a lot of scientific knowledge, no data exist about the influence of race course characteristics and other geographical aspects, on race performance.
Race course characteristics are the most important predictors in 48 h ultramarathon running - Scientific Reports
Abstract Ultra-marathon running - where races are held in distance-limited (50 km, 50 miles, 100 km, 100 miles, etc.), time-limited (6 h, 12 h, 24 h, 48 h, 72 h, etc.), and multi-stage races - is gaining in popularity. However, we have no knowledge of where the fastest 48-hour runners originate and where the fastest 48-hour races are held.
Relation of Dominant Leg Use with Functional Symmetries in Young Football Players of Different Age Groups
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
Reliability and Validity of Key Performance Metrics of Modified 505 Test
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
The association of origin and environmental conditions with performance in professional IRONMAN triathletes - Scientific Reports
Abstract We have (i) little knowledge about where the fastest professional IRONMAN triathletes originate from and where the fastest races take place and (ii) we have no knowledge of the optimal weather conditions for an IRONMAN triathlon.
The Asymmetries in Straight Jumps on the Trampoline Under Different Sensory Conditions
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
Rapid Assessment of Morphological Asymmetries Using 3D Body Scanner and Bioelectrical Impedance Technologies in Sports: A Case of Comparative Analysis Among Age Groups in Judo
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
Europe has the fastest Ironman race courses and the fastest Ironman age group triathletes - Scientific Reports
Abstract The majority of participants in Ironman triathlon races are age group athletes. We have extensive knowledge about recreational athletes’ training and competition participation. Nonetheless, Ironman age group triathletes must achieve fast race times to qualify for the Ironman World Championship in Hawaii. They can, therefore, benefit from knowing where the fastest Ironman racecourses in the world are.
Reliability and Validity of NX-16 3D Body Scanner
Reliability and Validity of NX-16 3D Body Scanner Jozef Simenko [1] ; Ivan Cuk [2] [1] University of Ljubljana Faculty of Sport Institute of Sport [2] University of Ljubljana Faculty of Sport Department of Gymnastics Localización: International Journal of morphology, ISSN-e 0717-9502, Vol. 34, Nº. 4, 2016, págs.
Running Variability in Marathon-Evaluation of the Pacing Variables
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
Purchase Channels and Motivation for Exercise in the Slovenian Population: Customer Behavior as a Guarantee of Fitness Center Sustainability
3. Results Figure 1 shows the trends in new member recruitment from 2016 to 2022. The solid line with full squares at the bottom of the figure shows that a very small percentage of members joined because they learned about the fitness center through radio and flyers (0.9% in 2022–1.6% in 2016). This trend was fairly stable as the least effective in attracting new members. »Other« as a reason for joining peaked in 2016 (16.3%) and decreased to only 4.3% in 2022.
Show More
loading
Actions
Is this you?
As a journalist, you can create a free Muck Rack account to customize your profile, list your contact preferences, and upload a portfolio of your best work.Get in touch with Ivan
Contact Ivan, search articles and posts on X, monitor coverage, and track replies from one place.
Learn more about Muck Rack