Eccentric resistance exercise emphasizes active muscle lengthening against resistance. In the past 15 years, researchers and practitioners have expressed considerable interest in accentuated eccentric (i.e., eccentric overload) and eccentric-only resistance exercise as strategies for enhancing performance and preventing and rehabilitating injuries. However, delivery of eccentric resistance exercise has been challenging because of equipment limitations. Previously, we briefly introduced the concept of connected adaptive resistance exercise (CARE)—the integration of software and hardware to provide a resistance that adjusts in real time and in response to the individual’s volitional force within and between repetitions. The aim of the current paper is to expand this discussion and explain the potential for CARE technology to improve the delivery of eccentric resistance exercise in various settings. First, we overview existing resistance exercise equipment and highlight its limitations for delivering eccentric resistance exercise. Second, we describe CARE and explain how it can accomplish accentuated eccentric and eccentric-only resistance exercise in a new way. We supplement this discussion with preliminary data collected with CARE technology in laboratory and non-laboratory environments. Finally, we discuss the potential for CARE technology to deliver eccentric resistance exercise for various purposes, e.g., research studies, rehabilitation programs, and home-based or telehealth interventions. Overall, CARE technology appears to permit completion of eccentric resistance exercise feasibly in both laboratory and non-laboratory environments and thus has implications for researchers and practitioners in the fields of sports medicine, physiotherapy, exercise physiology, and strength and conditioning. Nevertheless, formal investigations into the impact of CARE technology on participation in eccentric resistance exercise and clinical outcomes are still required.

离心阻力练习强调主动肌肉拉长对抗阻力。在过去的 15 年中，研究人员和从业者对强化离心（即离心超负荷）和仅离心抗阻训练作为提高表现以及预防和康复损伤的策略表现出了极大的兴趣。然而，由于设备的限制，进行离心阻力练习一直具有挑战性。之前，我们简要介绍了互联适应性阻力练习（CARE）的概念——软件和硬件的集成，提供实时调整的阻力，并响应个人在重复内和重复之间的意志力。本文的目的是扩大这一讨论，并解释 CARE 技术在改善各种环境下离心阻力训练的潜力。首先，我们概述了现有的阻力训练设备，并强调了其在进行偏心阻力训练方面的局限性。其次，我们描述了 CARE 并解释了它如何以新的方式完成强化离心和仅离心阻力练习。我们用 CARE 技术在实验室和非实验室环境中收集的初步数据来补充这一讨论。最后，我们讨论了 CARE 技术为各种目的提供离心阻力训练的潜力，例如研究、康复计划以及家庭或远程医疗干预。总体而言，CARE 技术似乎允许在实验室和非实验室环境中完成离心阻力训练，因此对运动医学、物理治疗、运动生理学以及力量和体能领域的研究人员和从业者具有重要意义。尽管如此，仍需要对 CARE 技术对参与离心阻力运动和临床结果的影响进行正式调查。