It is evident that males are more fatigable during submaximal knee extensions. Has there been any studies that used a repeated knee extension protocol that showed similar fatigability between the sexes? Perhaps, there is a certain contraction speed or relative workload level that elicits comparable fatigability?
I am looking for dynamic knee extensions, but perhaps I can get some insights from isometric ones as well.
Hi Sanghoon,
I have a paper that compares sexes across an isometric and concentric task, both at submaximal intensities and maximal.
Article Performance fatigability during isometric vs. concentric qua...
Interestingly, we showed that this relative fatigability depends on the measure:
when measuring fatigability using an isometric maximal contraction, no significant difference was found across sexes,
women showed greater relative fatigability when quantifying fatigue using a maximal concentric contraction,
This was independent of the isometric or concentric task.
Thank you Giorgio Varesco for sharing your paper. Very interesting how contraction modality affected the sex difference in fatigability. I will definitely keep this in mind for my upcoming work.
The following studies have compared sex differences in fatigue in the knee extension:
Gabriel DA. Fatigue Patterns for Accommodating Hydraulic Resistance Exercise. The Journal of Strength & Conditioning Research. 1991;5(1):6-10.
Pullinen T, Mero A, Huttunen P, Pakarinen A, Komi PV. Resistance exercise-induced hormonal responses in men, women, and pubescent boys. Medicine and Science in Sports and Exercise. 2002;34(5):806-13.
Latella C, Hendy A, Vanderwesthuizen D, Teo W-P. The modulation of corticospinal excitability and inhibition following acute resistance exercise in males and females. European Journal of Sport Science. 2018;18(7):984-93.
Metcalf E, Hagstrom AD, Marshall PW. Trained females exhibit less fatigability than trained males after a heavy knee extensor resistance exercise session. European Journal of Applied Physiology. 2019;119(1):181-90.
Lewis MH, Siedler MR, Lamadrid P, Ford S, Smith T, SanFilippo G, et al. Sex Differences May Exist for Performance Fatigue but Not Recovery After Single-Joint Upper-Body and Lower-Body Resistance Exercise. Journal of Strength and Conditioning Research. 2022;36(6):1498-505.
Most of these observe minimal sex differences, but it depends on how it is measured.
Thank you Christian Houmann Amdi ! These are great list of studies - will have a look at those in the upcoming days.
You're welcome. I see you're at AUT, as am I. Please let me know if I can help with anything. My MSc. dissertation was also on the topic on sex differences in fatigue, so I might be able to assist.
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