The effect of ultrasound on microvascular hemodynamics in skeletal muscle: Effects during ischemia

Hogan, Robert D.; Burke, K.M.; Franklin, Thomas D.

doi:10.1016/s0026-2862(82)80009-5

Cited by 64 publications

(31 citation statements)

References 6 publications

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“…In our study comparing the US treatment group and a placebo US group, statistically significant improvements were identified with US treatment in the majority of the evaluation parameters (pain at movement and at rest, NDI and NHP pain and physical capabilities subgroups), and improvements were sustained up to the end of the third month. Some theories on the effectiveness of US treatment in pain control in MPS have been suggested, including: increased blood flow depending on the pain-causing mediators to be removed from the environment (18), nerve conduction changes or cell membrane permeability changes depending on the reduction in inflammation (19), increased capillary density in muscle tissue (20), energy consumption improvement in the cell (21), increased angiogenesis in ischemic tissue (22), and acceleration of the healing of tissue and improved persistent muscle spasm (23). In addition to these mechanisms, stimulation of somatosensory receptors within the trigger points may reduce regional pain sensation, which in turn may decrease the sensitivity of trigger points or even result in their resolution by means of relaxation in tight bands.…”

Section: Discussionmentioning

confidence: 99%

Effectiveness of Ultrasound Therapy in Cervical Myofascial Pain Syndrome: A Double Blind, Placebo-Controlled Study

et al. 2010

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Objective: Ultrasound therapy is commonly employed in the treatment and management of soft tissue pain. The aim of this study was to investigate the effectiveness of ultrasound therapy in cervical myofascial pain syndrome (MPS). Materials and Methods: A total of 55 patients with cervical MPS were included in this study. The patients were randomly assigned into two groups. In Group 1 (n=28), ultrasound diathermy was administrated over three trigger points bilaterally for 8 minutes (min) once a day for 15 days over a period of three weeks. In Group 2 (n=27), the same treatment protocol was given, but the ultrasound instrument was switched off during applications. All patients in both groups performed daily isometric exercise and stretching exercises for the cervical region. Parameters were measured at baseline, and at weeks 4 and 12. All patients were evaluated with respect to pain (at rest and movement) and assessed by visual analog scale and active range of motion was measured using an inclinometer and a goniometer. Disability and quality of life were evaluated with the Neck Disability Index (NDI) and the Nottingham Health Profile (NHP). Results: In both groups, statistically significant improvements were detected in all outcome measures at weeks 4 and 12 (except sleep and social isolation subgroups of NHP in both groups) compared with baseline (p<0.05). However, improvement in NDI and pain and physical abilities subgroups of NHP was better in Group 1. Pain reduction evaluated with respect to pain at rest and movement was also better in Group 1. Conclusion:The results of our study showed that ultrasound therapy is effective in the management of cervical MPS. (Turk J Rheumatol 2010; 25: 110-5

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Section: Discussionmentioning

confidence: 99%

Effectiveness of Ultrasound Therapy in Cervical Myofascial Pain Syndrome: A Double Blind, Placebo-Controlled Study

et al. 2010

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“…A number of reports have non-thermal ultrasound to stimulate protein synthesis, increase blood flow and enhance bone healing, all of which aid in the recovery process (Dyson and Luke 1986, Hogan et al 1982, Pilla et al 1990). …”

Section: Introductionmentioning

confidence: 99%

A Comparison of Continuous Ultrasound and Pulsed Ultrasound on Soft Tissue Injury Markers in the Rat

2003

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Abstract. The cellular effects of pulsed and continuous ultrasound on the protein content of muscle after trauma were determined in this study. Rats were subjected to a single impact trauma to the gastrocnemius. Six major treatment groups were employed: (1) uninjured control, (2) injured control, (3) & (4) uninjured ultrasound treated, and (5) & (6) injured ultrasound treated. The ultrasound treated groups were subdivided into continuous ultrasound, and pulsed ultrasound treatments (dosage = 1.0 watts/cm 2 × 5 min), which were given from day 2 to day 7 post-trauma once daily. Animals were sacrificed at 1, 3 and 7 days, the medial gastrocnemius muscle being dissected and solubilized for protein content determination. On day 7 the control injured group had a statistically greater mean protein content than the injured continuous ultrasound treatment group, and the mean protein content of the injured pulsed ultrasound treatment group was statistically greater than both the injured control or the injured continuous ultrasound treatment groups (one way ANOVA, P<0.05). The means of all three uninjured control groups were not significantly different at day 1 or 7. Within each group, only the control injured (18% or 44 mg increase ± 17 mg) and the injured pulsed ultrasound treatment (7% or 22 mg increase ± 9 mg) groups showed statistically significant changes (95% Confidence Interval) in protein content from day 1 to day 7. All other treatment groups showed no statistically significant increases.

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“…During the physiological process of healing, the TU has a protective function by means of the neutralization of irritating chemical substances and by the precursor stimulus of the scar 4 . The TU treatment was administered in five-minutes daily sessions, following the recommendations for the acute phase of the lesion 20,21 , besides taking into account the lesion area and the muscle length. Other authors suggest that the beneficial effects of TU can be obtained with low intensities (0.5W/cm 2 ) 22,23 , shorter exposures ( five and six minutes) 22,23 , work cycles of 1:5 (2ms on and 8ms off, 20%) 23 and pulse modes 24 , with low heat production, as were the parameters used in this study.…”

Section: Discussionmentioning

confidence: 99%

Efeitos do ultra-som terapêutico nas propriedades mecânicas do músculo esquelético após contusão

Matheus¹,

Oliveira²,

Gomide³

et al. 2008

Rev. bras. fisioter.

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Effects of therapeutic ultrasound on the mechanical properties of skeletal muscles after contusion Efeitos do ultra-som terapêutico nas propriedades mecânicas do músculo esquelético após contusão Matheus JPC, Oliveira FB, Gomide LB, Milani JGPO, Volpon JB, Shimano AC AbstractBackground: Therapeutic ultrasound is a resource commonly applied to speed up tissue repair in muscle injuries. The absorption of the ultrasound waves is determined by their frequency and intensity. For a given intensity, the depth reached by 1MHz is greater than the depth reached by 3MHz. Objective: To analyze the mechanical properties of muscles subjected to acute impact injury treated with therapeutic ultrasound at the frequencies of 1 and 3MHz. Methods: Forty female Wistar rats (200.1±17.8g) were used, divided into four groups: (1) control; (2) muscle injury without treatment; (3) muscle injury treated with therapeutic ultrasound at the frequency of 1MHz (0.5W/cm 2 ); and (4) muscle injury treated with therapeutic ultrasound at the frequency of 3MHz (0.5W/cm 2 ). The injury was produced in the gastrocnemius muscle by means of an impact mechanism. The treatment consisted of a single five-minute session per day, for six consecutive days. The muscles were subjected to mechanical traction tests in a universal test machine. Results: Means and standard deviations for the mechanical properties of the injured groups that received therapeutic ultrasound were significantly greater than those of the injured group without treatment (p<0.05). The property of stiffness should be highlighted: the application of therapeutic ultrasound increased muscle stiffness by approximately 38%. Conclusions: Therapeutic ultrasound increased the mechanical properties of the injured muscles, and brought them to a level close to the control group. However, no significant difference in mechanical properties was observed between the groups treated with ultrasound at the frequencies of 1MHz and 3MHz.Key words: therapeutic ultrasonic; muscle injury; biomechanical properties. ResumoContextualização: O ultra-som terapêutico (UST) é um recurso comumente aplicado na aceleração do reparo tecidual de lesões musculares.A absorção das ondas ultra-sônicas é determinada pela freqüência e pela intensidade, sendo que, em uma mesma intensidade, a profundidade atingida por 1MHz é maior quando comparada a 3MHz. Objetivo: Analisar o comportamento das propriedades mecânicas de músculos submetidos à lesão aguda por impacto e tratados com UST, utilizando as freqüências de 1 e 3MHz. Materiais e métodos:Foram utilizadas 40 ratas Wistar (200,1±17,8g), divididas em quatro grupos: (1) controle; (2) lesão muscular sem tratamento; (3) lesão muscular tratada com UST de freqüência 1MHz (0,5W/cm 2 ) e (4) lesão muscular tratada com UST de freqüência 3MHz (0,5W/cm 2 ). A lesão foi provocada no músculo gastrocnêmio por mecanismo de impacto. O tratamento foi de cinco minutos diários durante seis dias consecutivos. Os músculos foram submetidos a ensaios mecânicos de tração em uma máquina universal de ensa...

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The effect of ultrasound on microvascular hemodynamics in skeletal muscle: Effects during ischemia

Cited by 64 publications

References 6 publications

Effectiveness of Ultrasound Therapy in Cervical Myofascial Pain Syndrome: A Double Blind, Placebo-Controlled Study

Effectiveness of Ultrasound Therapy in Cervical Myofascial Pain Syndrome: A Double Blind, Placebo-Controlled Study

A Comparison of Continuous Ultrasound and Pulsed Ultrasound on Soft Tissue Injury Markers in the Rat

Efeitos do ultra-som terapêutico nas propriedades mecânicas do músculo esquelético após contusão

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