Genetic background contributes substantially to individual variability in muscle mass. Muscle hypertrophy in response to resistance training can also vary extensively. However, it is less clear if muscle mass at baseline is predictive of the hypertrophic response. The aim of this study was to examine the effect of genetic background on variability in muscle mass at baseline and in the adaptive ...

The interaction among the motor units of the extensor carpi radialis longus (ECRL) and the extensor carpi ulnaris (ECU) muscles in man was studied during wrist extensions in which the two muscles acted as synergists. Intramuscular recordings were obtained using special quadrifilar needle electrodes. Isometric wrist extensions at 20-30% of the maximal effort were studied. The electromyographic (...

BACKGROUND Home and garden pesticide use has been linked to cancer and other health outcomes in numerous epidemiological studies. Exposure has generally been self-reported, so the assessment is potentially limited by recall bias and lack of information on specific chemicals. OBJECTIVES As part of an integrated assessment of residential pesticide exposure, we identified active ingredients and ...

In this research, low-melting phosphate (LMP) glasses (G1, G2, G3) were employed as green flame-retardant synergist additives in epoxy (EP)/ammonium polyphosphate (APP) composite. To investigate their performance additives, comprehensive fire tests and characterizations carried out, including limiting oxygen index test, UL-94 vertical burning cone calorimeter real-time temperature detection, X-...

Kojic acid is a secondary fungal metabolite that is commonly produced by many species of Aspergillus and Penicillium (Manabe et al., 1984). These fungi also produce mycotoxins that occur as components of distinctive secondary metabolite profiles, which can serve as reliable chemotaxonomic characters at the species level (Dorner, 1983; Frisvad & Filtenborg, 1983; Wicklow, 1984a). The mycotoxin a...

(1) In the present investigation, we tested hypothesis that unilateral countermovement jump performance is associated with knee joint stabilization ability during landing on unstable surface. (2) Twenty-five male sport students were for dynamometric extension and flexion, hip abduction isometric strength. Myolectric activity of vastus lateralis medialis, gluteus medius, biceps femoris muscles m...

During prolonged low-level contractions, synergist muscles are activated in an alternating pattern of activity and silence called as alternate muscle activity. Resting muscle stiffness is considered to increase due to muscle fatigue. Thus, we investigated whether the difference in the extent of fatigue of each plantar flexor synergist corresponded to the difference in the frequency of alternate...