EMG normalization to study muscle activation in cycling

Rouffet, David; Hautier, Christophe

doi:10.1016/j.jelekin.2007.03.008

Cited by 111 publications

(121 citation statements)

References 51 publications

(113 reference statements)

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“…During cycling protocol, the subject need to increase both cadence and force. This will resemble the actual cycling conditions when cyclists reach their maximal speed at a cadence exceeding 160 revolutions per minute [11].…”

Section: Experimental Protocolmentioning

confidence: 99%

Influence of Synchronized Dead Point Elimination Crank on Cyclist Muscle Fatigue

et al. 2016

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Abstract. The aim of this study was to investigate the influence of newly proposed bicycle's crank to crank angle setting on the Vastus Lateralis (VL) and Bicep Femoris (BF) muscle activity during cycling. Procedures of Conconi Test were used throughout the experiment for the data collection purpose. The muscles activities were recorded using surface electromyography and software LabChart7. The raw data were further processed in time (Root-Mean-Square, RMS) and frequency (Mean Power Frequency, MPF) domain. It was found that 0° crank to crank setting (similar to conventional crank to crank angle setting) caused the prime mover VL (Normalized RMS = 0.119) to fatigue more than BF (Normalized RMS = 0.102). This setting is expected to decrease the cycling performance. In addition, -5° is the best crank to crank angle setting that causes least fatigue to both VL and BF. In short, to increase the cycling performance by avoiding the fatigue to the main muscles, -5° is the suggested as setting angle for the proposed crank design.

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Section: Experimental Protocolmentioning

confidence: 99%

Influence of Synchronized Dead Point Elimination Crank on Cyclist Muscle Fatigue

et al. 2016

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“…• trunk flexion, hips and knees flexed to 90°, feet supported, trunk in full flexion (supine) [35,36] • trunk flexion, legs bent at 45°,and secured, trunk position not mentioned (supine) [37] internal oblique • trunk flexion and lateral flexion, hips and knees flexed to 90°, feet supported, trunk in full flexion and rotated contra-laterally (supine) [35] • trunk flexion and lateral flexion, hips and knees flexed to 90°, feet supported, trunk in full flexion and rotated ipsi-laterally (supine) [36] gluteus maximus • hip extension, hip flexed 45° (prone) [38] • back extension, hip flexed 30° (seated) [39] • hip abduction at 10° abduction, leg fully extended (side lying) contra-lateral knee and hip flexed 30° [40] gluteus medius…”

Section: Maximal Voluntary Isometric Contractionsmentioning

confidence: 99%

“…• knee extension, knee flexed 90°, hip flexed 90° (sitting) [38,43] • knee extension, knee flexed 60°, hip flexed 90° (sitting) [44,45] • knee extension, knee flexed 45° (sitting) [37] vastus medialis • knee extension, knee flexed 60° (sitting) [44,45] • knee extension, knee flexed 90°, hip flexed 90° (sitting) [43] rectus femoris • knee extension, knee flexed 90°, hip flexed 80° to 90° (sitting) [35,36,38,43] • knee extension, knee flexed 60°, hip flexed 90° (sitting) [44][45][46] lateral hamstring (biceps femoris) long head…”

Section: Muscles Investigated Manual Muscle Test Vastus Lateralismentioning

confidence: 99%

“…• knee flexion, knee flexed 90°, hip flexed 90° (sitting) [38] • knee flexion, knee flexed 60° (sitting) [44,46] • knee flexion, knee flexed 60° (prone) [45] • knee flexion, knee flexed 90°, hands clasped behind head (prone) [37] gastrocnemius lateralis…”

Section: Muscles Investigated Manual Muscle Test Vastus Lateralismentioning

confidence: 99%

“…• ankle plantar flexion, ankle, knee and hip in neutral position (prone) [38,45] • ankle plantar flexion, ankle -15°, knee flexed 30° [44] • ankle plantar flexion, mid ankle position (standing unilateral -body weight) [47] • ankle plantar flexion (supine) [33] soleus • ankle plantar flexion, mid ankle position (prone) [38] • ankle plantar flexion, ankle in neutral position; knee and hip flexed 90° (quadruped position) [45,46] tibialis anterior • ankle dorsi flexion, ankle, knee and hip in neutral position (supine) [45] • ankle dorsi flexion, ankle in neutral position; knee and hip flexed 90° (quadruped position) [46] Although the repeatability of the EMG recorded during MVICs within individuals on the same day has been questioned [34], the majority of studies indicate that the reliability of MVICs within individuals on the same day is high [42,48,49]. High repeatability requires proper guidance of the subjects to perform the tests identically with each repetition, familiarity of the subjects with the production of maximum effort and the avoidance of fatigue.…”

Section: Muscles Investigated Manual Muscle Test Vastus Lateralismentioning

confidence: 99%

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