Suchergebnisse - Unknown
-
1
Reliability of the durability concept in professional cyclists: a field-based study (Reliabilität des Konzepts der Durability bei professionellen Radfahrern: eine Feldstudie)
Mateo-March, M., Barranco-Gil, D., Hernández-Belmonte, A., Javaloyes, A., Muriel, X., Pallarés, J. G., Lucia, A., Valenzuela, P. L.Veröffentlicht in International Journal of Sports Medicine (2025)“… However, its reliability remains unknown. In this study, we assessed the repeatability of durability (determined as the decline in power output after accumulated work). …”
-
2
A broken link: Knowledge of carbohydrate requirements do not predict carbohydrate intake around competition in endurance athletes (Eine gebrochene Verbindung: Kenntnisse über den Kohlenhydratbedarf sagen die Kohlenhydratzufuhr bei Ausdauersportlern im Wettkampf nicht voraus)
Sampson, G., Morton, J. P., Areta, J. L.Veröffentlicht in European Journal of Sport Science (2024)“… However, the relationship between knowledge and practice in this population is unknown. To investigate this, we assessed the dietary intake in 50 athletes (37 females) who completed endurance events =2.5 h in duration and compared CHO intake against the carbohydrates for endurance athletes in competition questionnaire validated nutrition knowledge questionnaire, with specific questions related to CHO loading, pre-competition meal and during-competition intake. …”
-
3
The Tour de France, also possible for mortals? A comparison of a recreational and a World Tour cyclist (Die Tour de France, auch für Normalsterbliche möglich? Ein Vergleich zwischen einem Freizeitradler und einem World Tour-Fahrer)
Barranco-Gil, D., Muriel, X., Lucia, A., Joyner, M. J., DeSouza, C. A., Valenzuela, P. L.Veröffentlicht in Journal of Applied Physiology (2024)“… Cycling Grand Tours are arguably the epitome of strenuous endurance exercise, and they have been reported to represent the ceiling of sustained energy expenditure for humans. It remains unknown, however, if an average recreational athlete could endure such an event. …”
-
4
Real-world cycling cadences: effect on energy cost, joint mechanics, and fatigue (Kadenzen beim Radfahren in der realen Welt: Auswirkungen auf Energiekosten, Gelenkmechanik und Ermüdung)
du Plessis, C., Andrews, M., King, T., Giorgi, H. P., Cochrane Wilkie, J., Blazevich, A. J.Veröffentlicht in 28th Annual Congress of the European College of Sport Science, 4-7 July 2023, Paris, France (2023)“… Over a large range (40-180 rpm), higher cadences are associated with a higher energy cost and fatigue, yet the effect of small changes in cadence in experienced cyclists during an IP is unknown. Our purpose was to test whether small changes in cadence (as a proxy for gearing) meaningfully impact a cyclist`s oxygen uptake kinetics, joint-specific torque- and- power distributions, and performance fatigability. …”
-
5
Muscle typology underpins sprint cycling characteristics in elite track cyclists (Muskeltypologie als Grundlage für die Sprinteigenschaften von Bahnradfahrern der Eliteklasse)
Bellinger, P., Minahan, C., Derave, W., Lievens, E., Kennedy, B., Crampton, M., Wackwitz, T.Veröffentlicht in 28th Annual Congress of the European College of Sport Science, 4-7 July 2023, Paris, France (2023)“… ., a greater proportion of type II fibres)1,2. Nonetheless, it is unknown whether muscle typology underpins the key characteristics (i.e., Pmax and fatigue rate) of track sprint cycling. …”
-
6
Hematological, skeletal muscle fiber, and exercise performance adaptations to heat training in elite female and male cyclists (Hämatologische, Skelettmuskelfaser- und Leistungsanpassungen an Hitzetraining bei Elite-Radsportlern und -sportlerinnen)
Lundby, C., Hamarsland, H., Hansen, J., Bjørndal, H., Berge, S. N., Hammarstöm, D., Rønnestad, B. R.Veröffentlicht in Journal of Applied Physiology (2023)“… The underlying mechanisms remain partly unresolved, and it is unknown if female and male athletes may experience comparable gains. …”
-
7
Optimizing the high-intensity interval session through workload alterations in well-trained female and male cyclists (Optimierung des hochintensiven Intervalltrainings durch Änderung der Belastung bei gut trainierten Radfahrerinnen und Radfahrern)
Urianstad, T., Odden, I., Crantz Lorentzen, H., Odden, I., Mølmen, K. S., Hamarsland, H., Hammarstrom, D., Rønnestad, B. R.Veröffentlicht in Journal of Science and Cycling (2023)“… High-intensity interval training (HIT) sessions with a variable workload during the work periods has been considered more effective compared to HIT sessions performed at a constant workload; the optimal HIT design is unknown. This study investigated the isolated effect of power output distribution during three specific HIT sessions, not influenced by factors such as different training duration and different mean power output. 19 well-trained female and male cyclists (age, 22.6 (4.1); maximal oxygen consumption (VO2max), 70.3 (11.0) mL·min-1·kg-1) performed three different 6x8-minutes HIT sessions at a mean power output corresponding to the individual participants´ 40-minute maximal power output (FTP) on three consecutive days, in a randomized order: Session 1) 8-minute work periods with 30-seconds work periods at 118% of FTP separated by 15-seconds recovery periods at 60% of FTP (30/15), Session 2) 8-minute work periods performed at a steady power output corresponding to 100% of FTP (CON), Session 3) 8-minute work periods performed as two continuously changing 60-seconds work periods at 110 and 90% of FTP, respectively (60/60). …”
-
8
Aortic diameters and calcifications in former world-class cyclists (Aortendurchmesser und Verkalkungen bei ehemaligen Weltklasse-Radsportlern)
Valenziela, P. L., Maceira, A., Santos-Lozano, A., García-González, M. P., Higueras Ortega, L., Díaz-Gonzalez, L., Boraita, A., Barranco-Gil, D., Lucia, A.Veröffentlicht in Medicine & Science in Sports & Exercise (2023)“… Purpose Concerns on whether athletes--particularly older ones--are at an increased risk of pathological aortic dilation exist, and the prevalence of aortic calcifications in these individuals is unknown. We aimed to compare the dimensions, distensibility, and prevalence of calcifications in the thoracic aorta between former male professional cyclists (cases) and sex/age-matched controls. …”
-
9
Between-seasons variability of cyclists` peak performance: A longitudinal analysis of "real-world" power output data in male professional cyclists (Variabilität der Spitzenleistung von Radsportlern zwischen den Saisons: Eine Längsschnittanalyse von "Real-World"-Leistungsdaten bei männlichen Profi-Radsportlern)
Valenzuela, P. L., Mateo-March, M., Muriel, X., Zabala, M., Lucia, A., Barranco-Gil, D., Pallares, J. G.Veröffentlicht in International Journal of Sports Physiology and Performance (2023)“… However, the expected variation of cyclists` performance between seasons remains unknown. We aimed to assess the between-seasons variability of peak performance (assessed through the RPP) in male professional cyclists. …”
-
10
A quadriceps femoris motor pattern for efficient cycling (Ein Bewegungsmuster des Quadrizeps femoris für effizientes Radfahren)
Hering, G. O., Bertschinger, R., Stepan, J.Veröffentlicht in PLOS ONE (2023)“… However, motor patterns indicating higher levels of performance are unknown. To compare leg muscle activation between trained (3.5-4.2 W/kgbw) and highly trained (4.3-5.1 W/kgbw) athletes we applied electromyography, lactate, and bi-pedal/crank force measurements during a maximal power test, an individual lactate threshold test and a constant power test. …”
-
11
Patterns of energy availability of free-living athletes display day-to-day variability that is not reflected in laboratory-based protocols: Insights from elite male road cyclists (Die Parameter der Energiebereitstellung von Outdoor-Athleten weisen eine tägliche Variabilität auf, die sich in laborgestützten Protokollen nicht widerspiegeln: Einsichten von männlichen Elite-Straßenradfahrern )
Taylor, H. L., Garabello, G., Pugh, J., Morton, J., Langan-Evans, C., Louis, J., Borgersen, R., Areta, J. L.Veröffentlicht in Journal of Sports Sciences (2022)“… However, whether this daily EA pattern represents those of free-living athletes and is therefore ecologically valid is unknown. To investigate this, we assessed daily exercise energy expenditure, energy intake and EA in 10 free-living elite male road cyclists (20 min Mean Maximal Power: 5.27 ± 0.25 W · kg^-1) during 7 consecutive days of late pre-season training. …”
-
12
Comparing muscle Vo2 from near-infrared spectroscopy desaturation rate to pulmonary Vo2 during cycling below, at, and above the maximal lactate steady state (Vergleich von Muskel-VO2 aus der Nahinfrarotspektroskopie-Entsättigungsrate mit pulmonalem VO2 beim Radfahren unterhalb, bei und oberhalb des maximalen Laktat-Steady-States)
de Almeida Azevedo, R., Forot, J., Millet, G. Y., Murias, J. M.Veröffentlicht in Journal of Applied Physiology (2022)“… However, its correspondence with pulmonary oxygen uptake (Vo2p) during exercise remains unknown. This study investigated the Vo2m and Vo2p relationship in females and males in response to prolonged constant-load cycling exercise at different intensities. …”
-
13
An examination of the factors determining the performance of cyclists in elite competitions (Eine Untersuchung der leistungsbestimmenden Faktoren in Radrennen der Spitzenklasse)
Phillips, K. E.Veröffentlicht 2020“… Qualifying time-trial performance largely determined success in head-to-head racing, but there was evidence of unknown factors modifying cyclists` chances of success. …”
-
14
Are unilateral devices valid for power output determination in cycling? insights from the favero assioma power meter (Sind einseitige Instrumente für die Bestimmung der Leistung im Radsport geeignet? Erkenntnisse aus dem Favero Assioma Power Meter)
Valenzuela, P. L., Montalvo-Perez, A., Alejo, L. B., Castellanos, M., Gil-Cabrera, J., Talavera, E., Lucia, A., Barranco-Gil, D.Veröffentlicht in International Journal of Sports Physiology and Performance (2022)“… However, despite the popularity of the latter, their validity remains unknown. We aimed to analyze the validity of a unilateral pedal power meter for estimating actual ("bilateral") power output (PO). …”
-
15
No influence of nonivamide-nicoboxil on the peak power output in competitive sportsmen (Kein Einfluss von Nonivamid-Nicoboxil auf die Spitzenleistung bei Wettkampfsportlern)
Schörkmaier, T., Wahl, Y., Brinkmann, C., Bloch, W., Wahl, P.Veröffentlicht in International Journal of Sports Medicine (2021)“… However, the effect of nonivamide-nicoboxil cream on oxygenation and endurance performance under hypoxic conditions is unknown. Therefore, the purpose of this study was to investigate the effects of nonivamide-nicoboxil cream on local muscle oxygenation and endurance performance under normoxic and hypoxic conditions. …”
-
16
Reliability of salivary cortisol and testosterone to a high-intensity cycling protocol to highlight overtraining (Zuverlässigkeit von Cortisol im Speichel und Testosteron bei hochintensivem Radfahren zur Feststellung von Übertraining)
Hough, J., Leal, D., Scott, G., Taylor, L., Townsend, D., Gleeson, M.Veröffentlicht in Journal of Sports Sciences (2021)“… However, the reliability of hormonal responses to 55/80 when not overreached is unknown. Therefore, reported blunted hormonal responses could be due to inconsistent cortisol and testosterone responses to 55/80. …”
-
17
Verification testing to confirm VO2max in a hot environment (Verifikationsprüfungen zur Bestätigung der VO2max in einer heißen Umgebung)
Pryor, J. L., Leija, R. G., Morales, J., Potter, A. W., Looney, D. P., Pryor, R. R., Hostler, D., Cochrane-Snyman, K. C.Veröffentlicht in Medicine & Science in Sports & Exercise (2021)“… Verification tests to confirm graded exercise test (GXT) VO2max are growing in popularity, but the validity and reliability of such testing in the heat remains unknown. Purpose This study aimed to evaluate the validity and reliability of a verification test to confirm GXT VO2max in a hot environment. …”
-
18
The physiological, neuromuscular, and perceptual response to even- and variable-paced 10-km cycling time trials (Die physiologische, neuromuskuläre und wahrnehmungsbezogene Reaktion auf 10-km-Radfahrzeitfahren mit gleichmäßigem und variablem Tempo)
Veneman, T., Schallig, W., Eken, M., Foster, C., de Koning, J. J.Veröffentlicht in International Journal of Sports Physiology and Performance (2021)“… Background: During self-paced (SP) time trials (TTs), cyclists show unconscious nonrandom variations in power output of up to 10% above and below average. It is unknown what the effects of variations in power output of this magnitude are on physiological, neuromuscular, and perceptual variables. …”
-
19
Elevated peak systolic blood pressure in endurance-trained athletes: Physiology or pathology? (Erhöhter Spitzenwert des systolischen Blutdrucks bei ausdauertrainierten Sportlern: Physiologie oder Pathologie?)
Richard, N. A., Hodges, L., Koehle, M. S.Veröffentlicht in Scandinavian Journal of Medicine & Science in Sports (2021)“… Individuals exposed to chronic endurance training attain a greater exercise SBP than in their untrained state and sedentary counterparts, but it is currently unknown what is considered a safe upper limit. This review discusses key studies examining blood pressure response in sedentary individuals and athletes. …”
-
20
The generalized force-velocity relationship explains why the preferred pedaling rate of cyclists exceeds the most efficient one (Das allgemeine Kraft-Geschwindigkeits-Verhältnis erklärt, warum die bevorzugte Trittfrequenz von Radfahrern die effizienteste ist)
Kohler, G., Boutellier, U.Veröffentlicht in European Journal of Applied Physiology (2005)“… The reason for this difference is still unknown. We assume that the high pedaling rate preferred by cyclists can be explained by the inherent properties of muscle fibers. …”