The countermovement jump (CMJ) is one of the most used performance assessments in strength and conditioning. Although numerous studies discuss the usability of different metrics in this test, this is often performed within the context of a specific aim. However, to our knowledge, no information currently exists providing practitioners with some over-arching recommendations on which metrics to choose when the purpose of using the test differs. This article discusses how the metrics selected to monitor during CMJ testing may differ when aiming to use it as a proxy for athletic performance, as part of neuromuscular fatigue monitoring, or as part of a test battery for return to performance in injured athletes.

Resistance training (RT) is a nonpharmacological complement to cancer treatments due to its effectiveness in attenuating sarcopenia, cardiotoxicity, fatigue, and emotional disorders common in oncology patients. To adequately program and evaluate the acute or long-term effects of this type of training, a proper evaluation of the patients’ strength levels is necessary. Strength evaluations traditionally applied to this population required reaching muscle or technical failure, which could increase their discomfort levels, risk of injury, or other complications associated with the disease. In this regard, this manuscript described different dynamic and isometric evaluations recommended to accurately and safely evaluate the strength of the oncology population. Concerning dynamic evaluations, the velocity based method is recommended to determine the capacity of the patient to apply force against maximal (i.e., 1 repetition maximum) and submaximal loads. The sit-to-stand or vertical jump tests are also proposed as alternatives to evaluate dynamic strength using body weight. For isometric assessments, the knee extension and handgrip tests could complement dynamic evaluations or replace them for patients with very low strength levels. Besides describing in depth the aforementioned evaluations, the current review proposes important methodological aspects to ensure their accurate, reliable, and safe implementation.

Accentuated eccentric loading (AEL) can be combined with lower-body power-based movements to acutely enhance them; however, currently, there are limited recommendations for this training method. AEL can enhance force and power metrics during its utilization with lower-body power based exercises. When using AEL, exercises should consist of jump squats and countermovement jumps with loading methods consisting of weight releasors or dumbbell hand release. Elastic bands can be used; however, more research is needed in this area. External loads ranging from 10–30% of body mass can be used. Future research needs to investigate increased eccentric and concentric loads when using AEL with power based movements.