Draper D O, Schulthies S, Sorvisto P, Hautala A M
Department of Physical Education, Brigham Young University, Provo, UT 84602, USA.
J Orthop Sports Phys Ther. 1995 Mar;21(3):153-7. doi: 10.2519/jospt.1995.21.3.153.
Therapeutic ultrasound can be a very effective treatment modality when used correctly in the treatment of musculoskeletal conditions and wound healing. However, many protocols for the administration of ultrasound have not been scientifically tested. The purpose of this study was to measure muscle temperature changes during a frequently used protocol, ie., preicing prior to ultrasound application. A 23-gauge hypodermic needle microprobe was inserted 5 cm deep into the medial aspect of the anesthetized triceps surae muscle of 16 subjects. Two groups consisting of eight subjects each were tested for temperature changes during: a) ultrasound treatment on precooled tissue or b) ultrasound with no preceding treatment. Each treatment consisted of 10 minutes of continuous ultrasound delivered topically at 1.5 watts/cm2. A significant difference between the two treatment methods was measured (F = 19.06, p < 0.01). Ultrasound alone increased tissue temperature an average of 4.0 +/- .83 degrees C, whereas ultrasound preceded by 5 minutes of ice increased tissue temperature only 1.8 +/- 1.0 degrees C above original baseline level. At a depth of 5 cm, ultrasound preceded by ice treatment yielded little or no thermal benefits.
在用于治疗肌肉骨骼疾病和伤口愈合时，如果使用得当，治疗性超声可以是一种非常有效的治疗方式。然而，许多超声治疗方案尚未经过科学测试。本研究的目的是测量在一种常用方案（即在超声应用前进行预冰敷）过程中的肌肉温度变化。将一根23号皮下注射针微探头插入16名受试者麻醉后的腓肠肌内侧5厘米深处。两组，每组8名受试者，分别测试以下过程中的温度变化：a）对预冷组织进行超声治疗，或b）不进行预处理直接进行超声治疗。每次治疗包括以1.5瓦/平方厘米的强度局部施加10分钟连续超声。测量发现两种治疗方法之间存在显著差异（F = 19.06，p < 0.01）。单独使用超声使组织温度平均升高4.0 +/- 0.83摄氏度，而在超声治疗前先进行5分钟冰敷，组织温度仅比原始基线水平升高1.8 +/- 1.0摄氏度。在5厘米深度处，先进行冰敷再进行超声治疗几乎没有产生热效应。
