Medicine and Health Sciences Commons^™

Effect Of Tendon Vibration During Wide-Pulse Neuromuscular Electrical Stimulation (Nmes) On The Decline And Recovery Of Muscle Force, Vanesa Bochkezanian, Robert Newton, Gabriel S. Trajano, Amilton Vieira, Timothy S. Pulverenti, Anthony J. Blazevich

Research outputs 2014 to 2021

Background:

Neuromuscular electrical stimulation (NMES) is commonly used to activate skeletal muscles and reverse muscle atrophy in clinical populations. Clinical recommendations for NMES suggest the use of short pulse widths (100–200 μs) and low-to-moderate pulse frequencies (30–50 Hz). However, this type of NMES causes rapid muscle fatigue due to the (non-physiological) high stimulation intensities and non-orderly recruitment of motor units. The use of both wide pulse widths (1000 μs) and tendon vibration might optimize motor unit activation through spinal reflex pathways and thus delay the onset of muscle fatigue, increasing muscle force and mass. Thus, the objective of this study …

Superior Effects Of Eccentric To Concentric Knee Extensor Resistance Training On Physical Fitness, Insulin Sensitivity And Lipid Profiles Of Elderly Men, Trevor Chung-Ching Chen, Wei-Chin Tseng, Guan-Ling Huang, Hsin-Lian Chen, Kuo-Wei Tseng, Kazunori Nosaka

Research outputs 2014 to 2021

It has been reported that eccentric training of knee extensors is effective for improving blood insulin sensitivity and lipid profiles to a greater extent than concentric training in young women. However, it is not known whether this is also the case for elderly individuals. Thus, the present study tested the hypothesis that eccentric training of the knee extensors would improve physical function and health parameters (e.g., blood lipid profiles) of older adults better than concentric training. Healthy elderly men (60–76 years) were assigned to either eccentric training or concentric training group (n=13/group), and performed 30–60 eccentric or concentric …

Prevention Of Downhill Walking-Induced Muscle Damage By Non-Damaging Downhill Walking, Sumiaki Maeo, Masayoshi Yamamoto, Hiroaki Kanehisa, Kazunori Nosaka

Research outputs 2014 to 2021

Purpose:

Mountain trekking involves level, uphill, and downhill walking (DW). Prolonged DW induces damage to leg muscles, reducing force generating ability and muscle coordination. These increase risks for more serious injuries and accidents in mountain trekking, thus a strategy to minimize muscle damage is warranted. It has been shown that low-intensity eccentric contractions confer protective effect on muscle damage induced by high-intensity eccentric contractions. This study tested the hypothesis that 5-min non-damaging DW would attenuate muscle damage induced by 40-min DW, but 5-min level walking (LW) would not.

Methods:

Untrained young men were allocated (n = 12/group) to either a …