Fatigue levels at baseline (T1), at midpoint (T2), and after radiation therapy (T3). Fatigue persisted in 41% (14 out of 34) of participants at T3. The Functional Assessment of Cancer Therapy – Fatigue (FACT-F) scores of all subjects were >40 at T1, indicating that all subjects were not fatigued prior to radiation therapy. FACT-F scores of study participants in the high fatigue group and low fatigue group were comparable at T1 (p = .88) and T2 (p = .67); however, the difference between the two fatigue groups became significant at T3 (p = 3×10−6). Compared to T1, FACT-F scores in the high fatigue participants decreased at T2 (p = .03) and remained low at T3 (p = .01), indicating both treatment-related fatigue as well as chronic fatigue. Values are expressed as mean ± SEM. * indicates p < .05