Blood flow in human mandibular elevators at rest and during controlled biting

Effect of capsaicin-evoked jaw-muscle pain on intramuscular blood-flow

“…This hypothesis has gained some support in limb muscles (7)(8)(9) and in jaw muscles (10)(11)(12)(13). Indeed, intramuscular BF during controlled isometric contraction in normal jaw muscles has been described (5,6). These studies have indicated that BF during a sustained isometric contraction is insufficient to meet metabolic demand, resulting in relative local ischemia.…”

“…One way to compromise the BF has been speculated to be due to low levels of continuous muscle contraction (5,6). This hypothesis has gained some support in limb muscles (7)(8)(9) and in jaw muscles (10)(11)(12)(13).…”

“…The subjects increased the force up to the specified target level and held the contraction for 30 sec with the use of visual feedback from the surface EMG signals (EMG feedback). The contractions were followed by five minutes rest in order to avoid muscle fatigue by the submaximal contractions (6). A computer program automatically determined the peak MVC-force (Newton).…”

A Paced Auditory Serial Addition Task evokes stress and differential effects on masseter‐muscle activity and haemodynamics

“…For example, studies have indicated that BF during a sustained isometric contraction is insufficient to meet metabolic demand, resulting in relative local ischaemia (14).…”

Synergist coactivation and substitution pattern of the human masseter and temporalis muscles during sustained static contractions

“…This pain can be ascribed to the impairment of blood flow due to an increased intramuscular pressure and subsequent ischemia Rasmussen et al, 1977), and was more pronounced in the masseter muscles than in the temporalis muscles. Mean values of the EMG relative amplitude continuously increased throughout the submaximal clenching tasks.…”