Publications by authors named "G Guilhem"
Fascicle force-length relationship is one major basic mechanical property of skeletal muscle, subsequently influencing movement mechanics. While force-length properties are increasingly described through ultrafast ultrasound imaging, their test-retest reliability remains unknown. Using ultrafast ultrasound, and electrically evoked contractions at various ankle angles, gastrocnemius medialis fascicle force-length relationship was assessed twice, few days apart, in sixteen participants.
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- The study aimed to compare the rates of lower limb muscle injuries (LLMIs) and hamstring muscle injuries (HMIs) among athletes in 100m, 200m, and 400m sprints at international championships.
- Researchers conducted a comprehensive analysis of injuries during finals, semi-finals, and heats over eight championships from 2009 to 2022.
- Results indicated that the incidence of both LLMI and HMI was significantly higher in finals compared to heats and semi-finals, particularly noting increased HMI rates in 200m finals for male athletes.
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- The study focused on understanding how running in different temperatures (temperate vs hot) affects the dynamics of the gastrocnemius medialis (GM) muscle during exercise.
- 15 participants completed a running task while their muscle behavior and temperature were monitored using ultrafast ultrasound before, during, and after a 40-minute run.
- Results showed that despite increased body temperatures and heart rates in hotter conditions, muscle-tendon properties and fascicle behavior remained unchanged regardless of exercise duration or temperature, suggesting heat does not negatively impact muscle performance during prolonged running.
The present study aimed to: (1) investigate sleep architecture in response to an overload training and taper periods among endurance runners; and (2) assess the sleep benefits of a high-heat-capacity mattress topper. Twenty-one trained male endurance runners performed a 2-week usual training regimen (baseline) followed by 2-week overload and taper periods. From overload to the end of the taper period, they were assigned into two groups based on the mattress topper used: high-heat-capacity mattress topper (n = 11) or low-heat-capacity mattress topper (n = 10).
View Article and Find Full Text PDFThis study investigates the impact of a training program on sleep among endurance runners and the benefits of chronically using a high-heat-capacity mattress topper (HMT). Twenty-one trained male athletes performed a 2-week usual training regimen, sleeping on a Low-heat-capacity Mattress Topper (LMT), followed by 2-week overload and taper periods. From overload, participants were assigned into two groups based on the mattress topper used: HMT ( = 11) or LMT ( = 10).
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