sp;分 析 ， 它 必 须 具 备 以 下 三 个 条 件 ： 首 先 是 大 脑 皮 质 的 机 能 。 它 是 耐 力 素 质 表 现 出 来 的 神 经 系 统 和 脑 的 先 天 解 剖 生 理 特 点 ， 这 种 特 点 表 现 在 下 个 方 面 ， 即 大 脑 皮 质 具 有 长 时 问 保 持 兴 奋 与 抑 制 有 节 律 转 换 的 能 力 ； 大 脑 皮 质 中 参 与 活 动 的 运 动 中 枢 之 间 的 协 调 性 得 到 改 善 ； 能 够 改 善 运 动 器 “ 自 和 植 物 性 器 官 机 能之 间 的 协 调 性 。 其 中 内 脏 器 官 的 活 动 强 度 能 很 好 地 适 应 运 动 器 官 的 活 动 强 度 ， 吸 氧 量 和 需 氧 量 达 到 平 衡 。       第 二 是 内 脏 器 官 机 能 水 平 的 提 高 ， 能 保 证 运 动 器 官 运 动 时 问 延 长 。 赛 鸽 在 竞 翔 归 巢 运 动 中 ， 长 时 问 的 肌 肉 活 动 时 ， 血 液 循 环 、 呼 吸 和 排 泄 等 器 官 的 活 动 ， 必 须 与 飞 行 运 动 相 适 应 ， 以 满 足 大 脑 和 神 经 系 统 、 肌 肉 收 缩 运 动 对 能 量 物 质 的 需 

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