Background:The perception of effort is a key determinant of endurance performance and a barrier to physical activity in inactive populations.From a neurophysiological viewpoint,effort perception is thought to arise fr...Background:The perception of effort is a key determinant of endurance performance and a barrier to physical activity in inactive populations.From a neurophysiological viewpoint,effort perception is thought to arise from the brain processing of an efference copy of the motor command in sensory areas.However,recent research suggests that feedback from muscle spindles plays a significant role in this perception.In this study,tendon vibration protocols were employed to attenuate sensory feedback during subsequent cycling exercises.The aim was to assess whether vibration would increase cycling power output,muscle activation,and heart rate at fixed perceived effort intensities.Methods:Fifteen healthy young participants completed 2 experimental visits(vibration and sham).In each visit,participants performed two 3-min cycling bouts,1 at a moderate perceived effort intensity and 1 at a strong perceived effort intensity,before(pre)and after(post)an actual or a sham vibration protocol.Vibration was applied bilaterally on the patellar and Achilles tendons for 10 min.Power output,heart rate,and vastus lateralis electromyography(VL EMG)were recorded and averaged for each bout.Absolute values as well as relative change(%)between pre and post conditions were compared across sham and vibration conditions.Results:At moderate perceived effort,power output,heart rate,and VL EMG increased post-vibration compared to pre-vibration(p<0.05),while no difference was observed in the sham condition.At strong perceived effort,power output and VL EMG decreased post-sham(p<0.05)but remained unchanged post-vibration.Moreover,the relative change between pre and post conditions was significantly higher in the vibration conditions compared to the sham condition for all variables.Conclusion:This study shows that tendon vibration reduces effort perception during subsequent cycling bouts.This effect is likely a consequence of vibration-induced reduction in muscle spindle reafferent signaling to the brain,but this mechanism remains to be further elucidated.From an applied perspective,these findings highlight tendon vibration as a promising tool for enhancing physical activity engagement.展开更多
Today, most people know that physical activity(PA) is beneficial for their health ^(1,2)and aspire to engage in regular PA.^(3,4)However, despite their awareness of the importance of PA, it is evident that the transit...Today, most people know that physical activity(PA) is beneficial for their health ^(1,2)and aspire to engage in regular PA.^(3,4)However, despite their awareness of the importance of PA, it is evident that the transition from intention to action is challenging-a situation that has important public health implications. According to the World Health Organization,^(5)1 person dies every 6 s worldwide from causes related to physical inactivity, which underscores the urgency of addressing this situation.展开更多
To the Editor:Abeleda et al.[1]recently argued in a perspective article that the Philippines should do better in order to achieve its goal of reducing schistosomiasis incidence to zero in humans,animals,and snails by ...To the Editor:Abeleda et al.[1]recently argued in a perspective article that the Philippines should do better in order to achieve its goal of reducing schistosomiasis incidence to zero in humans,animals,and snails by 2025[2,3].The authors appropriately ascribed the need to ramp up surveillance,WASH(water,sanitation,and hygiene),and veterinary efforts.In this letter,I would like to add to the discussion that the key to achieving schistosomiasis elimination may be strengthening the veterinary public health sector and framing mitigation efforts within the One Health lens.Schistosoma(S.)japonicum infection is a zoonotic disease and it affects more than 40 species of animals,including livestock animals like cattle,pigs,and water buffaloes,and pets like dogs[4].In the Philippines,the prevalence of infection in animal reservoirs remains largely unknown in most endemic areas due to the lack of concerted epidemiological efforts unlike what is being done in human hosts.In areas where studies have been done,infection rates are from less than 10%to 97%in water buffaloes tested[5-7].Indeed,as Abeleda et al.[1]argued,there is a need to do better on this front.展开更多
基金supported by the French National Research Agency(Agence Nationale de la Recherche,ANR,Grant No.ANR-23-CE37-0014)for the Effort_(LESS)Project.
文摘Background:The perception of effort is a key determinant of endurance performance and a barrier to physical activity in inactive populations.From a neurophysiological viewpoint,effort perception is thought to arise from the brain processing of an efference copy of the motor command in sensory areas.However,recent research suggests that feedback from muscle spindles plays a significant role in this perception.In this study,tendon vibration protocols were employed to attenuate sensory feedback during subsequent cycling exercises.The aim was to assess whether vibration would increase cycling power output,muscle activation,and heart rate at fixed perceived effort intensities.Methods:Fifteen healthy young participants completed 2 experimental visits(vibration and sham).In each visit,participants performed two 3-min cycling bouts,1 at a moderate perceived effort intensity and 1 at a strong perceived effort intensity,before(pre)and after(post)an actual or a sham vibration protocol.Vibration was applied bilaterally on the patellar and Achilles tendons for 10 min.Power output,heart rate,and vastus lateralis electromyography(VL EMG)were recorded and averaged for each bout.Absolute values as well as relative change(%)between pre and post conditions were compared across sham and vibration conditions.Results:At moderate perceived effort,power output,heart rate,and VL EMG increased post-vibration compared to pre-vibration(p<0.05),while no difference was observed in the sham condition.At strong perceived effort,power output and VL EMG decreased post-sham(p<0.05)but remained unchanged post-vibration.Moreover,the relative change between pre and post conditions was significantly higher in the vibration conditions compared to the sham condition for all variables.Conclusion:This study shows that tendon vibration reduces effort perception during subsequent cycling bouts.This effect is likely a consequence of vibration-induced reduction in muscle spindle reafferent signaling to the brain,but this mechanism remains to be further elucidated.From an applied perspective,these findings highlight tendon vibration as a promising tool for enhancing physical activity engagement.
基金supported by The Shenzhen Educational Research Funding(zdzb2014)The Shenzhen Science and Technology Innovation Commission(202307313000096)+4 种基金The Social Science Foundation from the China's Ministry of Education(23YJA880093)The Post-Doctoral Fellowship(2022M711174)The National Center for Mental Health(Z014)BC is supported by the Chaires de recherche Rennes Métropole(23C 0909)SM is supported by the National Insti-tutes of Health(R01AG72445).
文摘Today, most people know that physical activity(PA) is beneficial for their health ^(1,2)and aspire to engage in regular PA.^(3,4)However, despite their awareness of the importance of PA, it is evident that the transition from intention to action is challenging-a situation that has important public health implications. According to the World Health Organization,^(5)1 person dies every 6 s worldwide from causes related to physical inactivity, which underscores the urgency of addressing this situation.
文摘To the Editor:Abeleda et al.[1]recently argued in a perspective article that the Philippines should do better in order to achieve its goal of reducing schistosomiasis incidence to zero in humans,animals,and snails by 2025[2,3].The authors appropriately ascribed the need to ramp up surveillance,WASH(water,sanitation,and hygiene),and veterinary efforts.In this letter,I would like to add to the discussion that the key to achieving schistosomiasis elimination may be strengthening the veterinary public health sector and framing mitigation efforts within the One Health lens.Schistosoma(S.)japonicum infection is a zoonotic disease and it affects more than 40 species of animals,including livestock animals like cattle,pigs,and water buffaloes,and pets like dogs[4].In the Philippines,the prevalence of infection in animal reservoirs remains largely unknown in most endemic areas due to the lack of concerted epidemiological efforts unlike what is being done in human hosts.In areas where studies have been done,infection rates are from less than 10%to 97%in water buffaloes tested[5-7].Indeed,as Abeleda et al.[1]argued,there is a need to do better on this front.
