Yamauchi Junichiro, Hargens Alan
School of Medicine, University of California, San Diego, San Diego, CA, USA.
Eur J Appl Physiol. 2008 May;103(1):41-5. doi: 10.1007/s00421-008-0672-3. Epub 2008 Jan 11.
It is not known how the mode of exercise, dynamic and static exercises, affects the limb volume. Therefore, the purpose of this study was to investigate hand and wrist volume (HWV) after dynamic and static handgrip exercise. Nine healthy subjects (age 31.8 +/- 7.3 years; height 172.0 +/- 5.7 cm; body mass 66.9 +/- 8.1 kg, mean +/- SD) volunteered for this study. HWV was measured with a hand and wrist volumeter before and immediately after dynamic and static exercises. Initially during rest, HWV was measured after the hand was passively hung for 5 min. Handgrip exercises with an ergonomic hand exerciser were performed at 20% of maximum voluntary contraction in right and left hands by static and dynamic exercises, respectively. Both dynamic and static handgrip exercises consisted of six sets of 30-s contractions with 10-s rest intervals between exercise bouts. The dynamic handgrip exercise was performed by repetitive contraction and relaxation of the hand at a maximum frequency. In order to determine intensity of handgrip exercises, maximum isometric handgrip strength of the right and left hand was measured with a handgrip dynamometer. Data are presented as mean +/- SD. After dynamic and static handgrip exercises, HWV increased significantly, and these increases represent 2.2 +/- 0.7% (P < 0.001) and 1.4 +/- 0.8% (P < 0.001) of resting HWV, respectively. The elevation of HWV after dynamic exercise was significantly higher than that after static exercise (P < 0.05). These results suggest that the higher HWV after dynamic exercise may be caused by higher increased interstitial fluid volume, capillary volume and venous volume in hand and wrist tissues.
尚不清楚运动方式（动态和静态运动）如何影响肢体体积。因此，本研究的目的是调查动态和静态握力运动后手和腕部体积（HWV）的变化。九名健康受试者（年龄31.8±7.3岁；身高172.0±5.7厘米；体重66.9±8.1千克，均值±标准差）自愿参与本研究。在动态和静态运动前及运动后即刻，使用手和腕部体积测量仪测量HWV。最初在休息时，手被动下垂5分钟后测量HWV。使用符合人体工程学的手部训练器，分别通过静态和动态运动，以最大自主收缩的20%强度对右手和左手进行握力训练。动态和静态握力训练均包括六组，每组收缩30秒，组间休息10秒。动态握力训练通过以最大频率重复收缩和放松手部来进行。为了确定握力训练的强度，使用握力计测量右手和左手的最大等长握力。数据以均值±标准差表示。动态和静态握力训练后，HWV显著增加，这些增加分别相当于静息HWV的2.2±0.7%（P<0.001）和1.4±0.8%（P<0.001）。动态运动后HWV的升高显著高于静态运动后（P<0.05）。这些结果表明，动态运动后较高的HWV可能是由于手和腕部组织中间质液体积、毛细血管体积和静脉体积的增加幅度更大所致。
