， 提 高 动 物 心 血 管 耐 力 是 耐 力 素 质 的 重 要 因 素 。 有 研 究 证 明 ， 心 血 管 耐 力 是 循 环 系 统 保 证 机 体 长 时 间 进 行 肌 肉 活 动 时 ， 营 养 及 氧 的 供 应 和 运 走 代 谢 废 物 的 能 力 。 其 中 内 脏 器 官 机 能 的 提 高 ， 能 保 证 运 动 时 问 的 延 长 。       
      赛 鸽 在 进 行 长 时 问 耐 力 运 动 时 ， 血 液 循 环 、 呼 吸 和 排 泄 器 官 的 活 动 必 须 与 飞 行 运 动 相 适 Ｌ ， 以 满 足 肌 肉 收 缩 运 动 时 对 营 养 物 质 和 氧 的 需 要 。 此 外 更 为 重 要 的 是 ， 耐 力 素 质 水 平 高 的 赛 鸽 ， 其 机 体 能 量 代 谢 绝 大 部 分 为 有 氧 代 谢 供 能 ， 随 着 运 动 过 程 中 肌 肉 中 的 糖 原 和 肝 糖 原 逐 渐 消 耗 ， 机 体 动 用 脂 肪 供 能 的 比 例 增 大 。       
      体 内 脂 肪 的 分 解 代 谢 是 肌 肉 长 时 问 活 动 时 能 量 供 应 的 重 要 来 源 。 运 动 科 学 研 究&nb

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