本研究目的是要瞭解花蓮市老人活動場所使用者的運動行為階段分布情形以及其決定因素，並進一步探討不同性別、不同年齡層和不同運動行為階段在運動行為決定因素上是否有差異。本研究一共有206位有效受試者，研究結果發現： 一、大多數花蓮市老年人都有規律地參與運動的習慣(67％)。 二、影響花蓮市男性老年人運動行為程度較大的決定因素為運動態度、運動能力、自我效能以及運動阻礙；影響女性老年人程度較大因素為運動態度、自我效能、運動能力及運動阻礙。 三、花蓮市不同性別老年人在運動行為決定因素中的家人支持和運動態度上有顯著之差異。 四、花蓮市不同年齡層老年人在運動行為決定因素上沒有顯著差異。 五、花蓮市不同運動行為階段老年人在自我效能、運動態度和運動樂趣上有顯著差異。 根據研究結果，研究者建議未來研究可以更擴大研究之區域範圍，並根據不同運動行為階段的老年人之行為決定因素特徵，設計適合各運動階段的行為促進計畫，增加他們對於身體活動的興趣，進而提昇其運動參與行為，讓他們成為健康、快樂的銀髮族。

The purpose of the study was to analyze the stages of exercise behavior and determinants on elderly users at activity centers in Hua-Lien city. Additionally, to analyze whether there were significant differences on determinants of physical activity between genders, age groups, and stages of exercise behavior. There were 206 valid subjects in the study. The findings of study were: 1. most of the elderly users at activity centers in Hua-Lien city participate in physical activity regularly(67%). 2. these four determinants: attitude toward physical activity, perceived physical ability, self-efficacy, and barriers had greater influence on males' participation in physical activity; attitude toward physical activity, self-efficacy, perceived physical ability, and barriers had greater influence on females' participation in physical activity. 3. there were significant differences on family support and attitude toward physical activity those two determinants between genders. 4. there was no significant difference on determinants between age groups. 5. there were significant differences on self-efficacy, attitude toward physical activity, and enjoyment those three determinants between stages of exercise behavior. According to the research findings, researchers suggest the further study to expand its covered geographic area for study, and design proper promoting plans for elderly population in each stage of exercise behavior.