Influence of water immersion on wrist and trunk activities.

<p>(A) The placement of the Actiwatchs on a human subject. The Actiwatch on the chest was sealed in double-layered plastic bag and wrapped with bandage around chest along the dashed lines. (B) Wrist and trunk activities recorded by the Actiwatchs. The data represent means ± SEs, n = 22. (C) Changes in the trunk and wrist activities. The data are means ± SEs, n = 22. The values in block I were normalized to 1.0. Statistical significance was determined with Student-<i>t</i> test. (D) Schematic presentation of the changes in motion in the different gravity conditions.