Task-dependent force sharing between muscle synergists during locomotion in turkeys

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Task-dependent force sharing between muscle synergists during locomotion in turkeys.

At most joints, there is a redundancy of muscle function. For any given movement, there are a wide range of possible solutions to the problem of how force is shared among muscle synergists. A better understanding of how force is shared among muscle synergists can provide insight into the mechanics and control of movement. We examined force sharing in the gastrocnemius of wild turkeys (Meleagris...

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Functional diversification within and between muscle synergists during locomotion.

Locomotion arises from the complex and coordinated function of limb muscles. Yet muscle function is dynamic over the course of a single stride and between strides for animals moving at different speeds or on variable terrain. While it is clear that motor unit recruitment can vary between and within muscles, we know little about how work is distributed within and between muscles under in vivo co...

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Relationship between muscle force and muscle area showing glycogen loss during locomotion.

This experiment was designed to study the relationship between the cross-sectional area of rat skeletal muscle showing glycogen loss and the muscle forces exerted during exercise. Muscular force exerted by the extensors of the elbows and ankle was increased by 24% by loading rats with 24% of their body mass while running them on a treadmill at 30 m.min-1. VO2 increased by 24% and stride frequen...

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Muscle force distribution during forward and backward locomotion.

Backward walking (BW) is a common technique employed in the treatment of a variety of orthopedic and neurological diseases. BW training may offer some benefits especially in balance and motor control ability beyond those experienced through forward walking (FW). The purpose of this study was to determine whether BW represented a simple reversal of FW and, hence muscle force distribution is the ...

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Alternate muscle activity observed between knee extensor synergists during low-level sustained contractions.

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ژورنال

عنوان ژورنال: Journal of Experimental Biology

سال: 2008

ISSN: 1477-9145,0022-0949

DOI: 10.1242/jeb.013227