Durability in recreational runners: effects of 90-min low-intensity exercise on the running speed at the lactate threshold

European Journal of Applied Physiology, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 9, 2024

Recent studies have suggested that the capability to resist deterioration of physiological characteristics could be an independent factor contributing endurance performance. This study aimed at investigating whether prolonged low-intensity exercise induces shifts in lactate threshold, and fatigue-induced changes differ between sexes.

Language: Английский

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The 9/3 Min Running Test: A Simple and Practical Approach to Estimate the Critical and Maximal Aerobic Power

European Journal of Sport Science, Journal Year: 2025, Volume and Issue: 25(2)

Published: Jan. 27, 2025

ABSTRACT This study aims to determine the validity of linear critical power (CP) and Peronnet models estimate output associated with second ventilatory threshold (VT2) maximal aerobic (MAP) using two‐time trials. Nineteen recreational runners (10 males 9 females maximum oxygen uptake: 53.0 ± 4.7 mL/kg/min) performed a graded exercise test (GXT) VT2 MAP. On test, athletes trials 3 min interspaced by 30 min. The CP was determined from model compared VT2. MAP model, established at 7 min, in GXT. valid for determining VT2, regardless sex ( p = 0.130; 9/3 vs. GXT: 3.5 [−1.1 8.2] W). overestimated 0.015) specifically (9/3 9.2 [3.3 15.1] W) rather than 1.7 [−4.4 8.0] Therefore, estimates were introducing W' parameters stepwise multiple regression analysis. For females, unique significant predictor < 0.001) explaining 96.7% variance. In males, both predictors 97.7% Practitioners can validly through practical testing protocol male female runners.

Language: Английский

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Blue plaque review series: A.V. Hill, athletic records and the birth of exercise physiology

The Journal of Physiology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 23, 2025

Abstract One hundred years ago, A.V. Hill authored three manuscripts analysing athletic world records from a physiological perspective. That analysis, grounded in Hill's understanding of contemporary muscle bioenergetics, provides fascinating sketch the thoughts and speculations one fathers exercise physiology. In this review, we reflect on prose with benefit 100 hindsight, illustrate how was able to draw startlingly accurate conclusions what limited data were available physiology intense exercise. discusses energetics running, swimming, rowing cycling both males females, as well addressing performance horses mechanics jumping. He also considers sports nutrition, pacing strategy ultra‐endurance Perhaps most impactfully, he establishes that speed–duration relationship has characteristics underlying basis performance. physiology, turn, differs depending duration event itself, providing first descriptions task‐dependent nature mechanisms limiting tolerance. A remarkable feature papers is they written just few before major revolution biochemistry, yet still develop conceptually sound ideas about human His hypotheses require only minor revision bring them into line current understanding. reaching their centenary, therefore, surprising these not have aged, but relevant remain. image

Language: Английский

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Are There Differences Between Sexes in Performance-Related Variables During a Maximal Intermittent Flywheel Test?

Sports Health A Multidisciplinary Approach, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Background: Isometric and dynamic tasks of low-to-moderate intensities have been used to study sex differences in fatigability; however, maximal exertions with flywheel devices (FDs) not used. This aimed (1) detect fatigue-related performance a intermittent fatiguing protocol on FD, (2) investigate the most sensitive dynamometric mechanical variables for assessing fatigue both sexes. Hypothesis: No should exist when performing this FD. Study Design: Cohort observational study. Level Evidence: 3. Methods: A total 34 young adults (17 female/17 male) performed 10 sets repetitions 3 minutes passive recovery half-squat exercise Inter- intraset analysis force, power, velocity, work, impulse, together their relative change slope, were calculated during concentric eccentric phases. Raw data also normalized body mass interset analysis. The changes each variable compared. Results: Men showed greater earlier decreases throughout ( P < .05; η p 2 ≥ 0.08), but these consistent after normalization > ≤ 0.05). Irrespective phase, revealed that was higher last set .03; 0.14), power being detecting decline .04; = 0.49). Conclusion: Women experienced slower delayed kinetics than men FD if dimensionality is considered. For training purposes, seems be discriminative performance. Clinical Relevance: Body key factor must considered comparing sexes FDs.

Language: Английский

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Slight power output manipulations around the maximal lactate steady state have a similar impact on fatigue in females and males

Journal of Applied Physiology, Journal Year: 2021, Volume and Issue: 130(6), P. 1879 - 1892

Published: April 29, 2021

Neuromuscular fatigue (NMF) and exercise performance are affected by intensity sex differences. However, whether slight changes in power output (PO) below above the maximal lactate steady state (MLSS) impact NMF subsequent (time to task failure, TTF) is unknown. This study compared TTF females males response performed at MLSS, 10 W (MLSS-10) (MLSS+10). Twenty participants (9 females) three 30-min constant-PO bouts followed (1-min delay) a 80% of peak-PO. was characterized isometric voluntary contractions (IMVC) femoral nerve electrical stimulation knee extensors [e.g., peak torque potentiated high-frequency (Db100) single twitch (TwPt)] before immediately after bouts. IMVC declined less MLSS-10 (-18 ± 10%) MLSS (-26 14%) MLSS+10 (-31 11%; all P < 0.05), Db100 decline greater (-24 other intensities (MLSS-10: -15 9%; MLSS: -18 0.05). Females showed smaller reductions, relative baseline, TwPt (all this difference being not dependent on intensity. negatively impacted increasing PO (P 0.001), with no differences end-exercise > Slight manipulations around elicited great reduction force impairments contractile function. Although lower males, both sexes similarly.NEW & NOTEWORTHY It unknown minimum affect neuromuscular development males. The present data that decrease or increase relation function, respectively. Even though had an overall than similar intensity-dependent occurred independently sex.

Language: Английский

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