COLSON , Serge

We investigated the cross-over effect of muscle fatigue and its time course on the non-exercising contralateral limb (NEL) after unilateral fatiguing contractions of the ipsilateral exercising limb (EL). For this purpose, 15 males performed two bouts of 100-second maximal isometric knee extensions with the exercising limb, and neuromuscular...

PURPOSE: To describe the most effective parameters maximizing muscle activity during whole-body vibration (WBV) exercises on a vertically vibrating (VV) platform. METHODS: The influence of (1) WBV vs. no vibration, (2) vibration frequency (25, 30, 35, 40 Hz), (3) platform peak-to-peak displacement (1.2, 2 mm), and (4) additional loading (no...

Purpose: Kinematic and kinetic assessments of Sit-to-Stand (STS) usually done in laboratory settings involve strong technical expertise and expensive equipment. As an alternative, embedded inertial motion sensors can be used to quantify key parameters of selected everyday life movements such as STS. Sensors can be integrated in different...

EMG SIGNAL PROCESSING DURING WHOLE-BODY VIBRATION: A PRELIMINARY STUDY University of Nice-Sophia Antipolis, Nice France 1:I3S; 2:LAMHESS, Faculty of Sports Sciences Introduction Whole-body vibration (WBV) has become one of the most popular alternative exercise modality. To investigate the mechanisms leading to increased neuromuscular...

Whole-body vibration (WBV) has been shown to result in augmented muscle activity during the exposure to the vibration, which has been assessed with surface electromyography (sEMG). While numerous studies have focused on the evaluation of the optimal training parameters using sEMG recordings during WBV, its validity is still debated. Briefly,...

PURPOSE: To describe the most effective parameters maximizing muscle activity during whole-body vibration (WBV) exercises on a vertically vibrating (VV) platform. METHODS: The influence of (1) WBV vs. no vibration, (2) vibration frequency (25, 30, 35, 40 Hz), (3) platform peak-to-peak displacement (1.2, 2 mm), and (4) additional loading (no...

The objective was to investigate the influence of surface electromyography (sEMG) processing methods on the quantification of muscle activity during whole-body vibration (WBV) exercises. sEMG activity was recorded while the participants performed squats on the platform with and without WBV. The spikes observed in the sEMG spectrum at the...

The purpose of this study was to determine whether the excessive spikes observed in the surface electromyography (sEMG) spectrum recorded during whole-body vibration (WBV) exercises contain motion artifacts and/or reflex activity. The occurrence of motion artifacts was tested by electrical recordings of the patella. The involvement of...

Whole-body vibration (WBV) has been shown to result in augmented muscle activity during the exposure to the vibration, which has been assessed with surface electromyography (sEMG). While numerous studies have focused on the evaluation of the optimal training parameters using sEMG recordings during WBV, its validity is still debated. Briefly,...

Although firefighting is known to engender a high rate of injury, few studies have examined the contribution of physical exercise, burnout and coping strategies to firefighting-related injuries. Data were collected from a population-based sample of 220 male firefighters. In a descriptive study, the nature and site of the injuries and the...

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Effects of social context on handgrip strength performance among less active people living with HIV Despite the multiple benefits of physical activity (PA) people living with HIV (PLHIV) remain insufficiently active. As nonexercisers are perceived as less healthy, less active and less strong, it is likely that PLHIV would be subject to the...

The study aims to determine the validity and reproducibility of step duration and step length parameters measured during walking in healthy participants using an accelerometer embedded in smart eyeglasses. Twenty young volunteers participated in two identical sessions comprising a 30 s gait assessment performed at three different treadmill...

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Falls and frailty status are often associated with a decline in physical capacity and multifactorial assessment is highly recommended. Based on the functional and biomechanical parameters measured during clinical tests with an accelerometer integrated into smart eyeglasses, the purpose was to characterize a population of older adults through an...

Background As people age, their physical capacities (eg, walking and balance) decline and the risk of falling rises. Yet, classic fall detection devices are poorly accepted by older adults. Because they often wear eyeglasses as they go about their daily activities, daily monitoring to detect and prevent falls with smart eyeglasses might be more...

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The purpose of this study was to compare the effects of combined resistance and plyometric/sprint training with plyometric/sprint training or typical soccer training alone on muscle strength and power, speed, change-of-direction ability in young soccer players. Thirty-one young (14.5 ± 0.52 years; tanner stage 3-4) soccer players were randomly...

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