“…Although the precise mechanisms associated with CRF have yet to be identified, the driving factors are commonly theorized to be associated with negative physiological (i.e., muscle strength and endurance, cardiorespiratory fitness, body composition), biologic/hematologic (i.e., inflammatory response, metabolic/endocrine/immune function), psychological (i.e., anxiety, depression, distress), behavioral (i.e., sleep quality and quantity, appetite) and social (i.e., social interaction) changes resulting from cancer and its treatment [ 3 , 4 ]. Historically, patients have been advised to rest during and after cancer treatments; however, research evidence refutes the use of rest as an effective strategy to manage CRF due to the detrimental effects of inactivity on structure and function (i.e., negative adaptations in the neuromuscular, skeletal and cardiorespiratory systems) [ 5 ].…”