Knee-muscle activation during landings: Developmental and gender comparisons

Article Abstract:

A study was conducted to determine neuromuscular differences in anteroposterior knee-joint muscle activation among children and adult males and females landing from a self-initiated vertical jump (VJ) under normal and perturbated conditions. It was concluded that children's decreased preparatory contraction about the knee does not seem to be linked with anterior cruciate ligament (ACL) injury risk and adults displayed higher concentration ratio.

New Hampshire, Physiological aspects, Knee, Knee muscles, Anterior cruciate ligament

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Influence of speed and step frequency during walking and running on motion sensor output

Article Abstract:

The relationships of triaxial accelerometry, uniaxial accelerometry and pedometry with speed and step frequency (SF) are examined across a range of walking and running speeds. The results are presented and it is suggested that triaxial accelerometers are more appropriate than uniaxial accelerometers to capture high-intense activity, while pedometer output is highly correlated with step frequency.

Running, Accelerometers, Foot, Clinical report, Pedometers, Foot movements

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Reliability of motor-evoked potentials during resting and active contraction conditions

Article Abstract:

A study is conducted to determine the reliability of motor-evoked potentials (MEP) obtained using transcranial magnetic stimulation (TMS) in the first dorsal interosseous (FDI) and biceps brachii muscles. It is concluded that moderate to good reliability of MEP amplitude in the biceps and FDI muscles can be obtained using TMS in both using resting and active contraction conditions.

Arm muscles, Contractility (Biology)

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