Virtual Reality (VR) exergames can increase engagement in and motivation for physical activities. Most VR exergames focus on the upper body because many VR setups only track the users' heads and hands. To become a serious alternative to existing exercise programs, VR exergames must provide a balanced workout and train the lower limbs, too. To address this issue, we built a VR exergame focused on vertical jump training to explore full-body exercise applications. To create a safe and effective training, nine domain experts participated in our prototype design. Our mixed-methods study confirms that the jump-centered exercises provided a worthy challenge and positive player experience, indicating long-term retention. Based on our findings, we present five design implications to guide future work: avoid an unintended forward drift, consider technical constraints, address safety concerns in full-body VR exergames, incorporate rhythmic elements with fluent movement patterns, adapt difficulty to players' fitness progression status.

翻译：虚拟现实（VR）体感游戏可提升体育锻炼的参与度与动机。现有多数VR体感游戏仅关注上肢训练，这是因为大多数VR设备仅追踪用户的头部和手部运动。为使VR体感游戏成为现有健身方案的真正替代品，其必须提供均衡的锻炼内容，同时训练下肢。针对该问题，我们构建了一款专注于垂直跳跃训练的VR体感游戏，以探索全身运动应用。为设计安全有效的训练方案，九位领域专家参与了我们的原型设计。混合方法研究证实，以跳跃为核心的训练提供了具有挑战性的合理负荷和积极的玩家体验，预示其具备长期保留潜力。基于研究发现，我们提出五项设计启示以指导后续工作：避免非预期的向前漂移、考虑技术限制、解决全身VR体感游戏的安全隐患、融入流畅运动模式的节奏性元素、根据玩家体能进展动态调整难度。