Many post-treatment cancer patients complain of persistent fatigue, which is known to have a significant impact on activities of daily living, quality of life, and reinstatement. We report a case of a 37-year-old man with acute myeloid leukemia (AML) who was able to return to work by performing High-Intensity Interval Training (HIIT) after the remission. The diagnosis of AML was made and the treatment started in January X, and the patient reached remission and discharged in June. However, he developed herpes zoster and was unable to return to his job. The patient was referred to our hospital for rehabilitation treatment in December X. The rehabilitation treatment included 40-min HIIT twice a week and commuting practice, as well as gradual support for return-to-work. Cardiopulmonary function improved from 19.2 to 25.7 mL/min/kg of oxygen uptake at anaerobic metabolic threshold, lower limb muscle strength improved from 0.47/0.48 to 0.60/0.55 kgf/kg of knee extension muscle strength ratio (right/left), physical function improved from 14 to 24 times in 30-second chair stand test, Cancer Fatigue Scale improved from 46 to 25 points, and the patient was able to work full time in May X＋1. HIIT improved cardiopulmonary function, muscle strength, physical function, and fatigue, and enabled the patient to return to work. Even after remission, some patients have difficulty returning to work. The results suggest that appropriate follow-up, exercise guidance, and rehabilitation therapy are necessary even after treatment.

Many post-treatment cancer patients complain of persistent fatigue, which is known to have a significant impact on activities of daily living, quality of life, and reinstatement. We report a case of a 37-year-old man with acute myeloid leukemia (AML) who was able to return to work by performing High-Intensity Interval Training (HIIT) after the remission. The diagnosis of AML was made and the treatment started in January X, and the patient reached remission and discharged in June. However, he developed herpes zoster and was unable to return to his job. The patient was referred to our hospital for rehabilitation treatment in December X. The rehabilitation treatment included 40-min HIIT twice a week and commuting practice, as well as gradual support for return-to-work. Cardiopulmonary function improved from 19.2 to 25.7 mL/min/kg of oxygen uptake at anaerobic metabolic threshold, lower limb muscle strength improved from 0.47/0.48 to 0.60/0.55 kgf/kg of knee extension muscle strength ratio (right/left), physical function improved from 14 to 24 times in 30-second chair stand test, Cancer Fatigue Scale improved from 46 to 25 points, and the patient was able to work full time in May X＋1. HIIT improved cardiopulmonary function, muscle strength, physical function, and fatigue, and enabled the patient to return to work. Even after remission, some patients have difficulty returning to work. The results suggest that appropriate follow-up, exercise guidance, and rehabilitation therapy are necessary even after treatment.

COVID-19 spread from Wuhan City, People's Republic of China, in December 2019, followed by an explosion of infections worldwide. The number of infected people has also risen dramatically in Japan and has become a major social problem. Patients with severe disease require a long period to return to society due to significant physical weakness even after recovery. We report a patient in his 40s with a history of nephrectomy who was infected with COVID-19 and became critically ill.After being diagnosed with COVID-19 by PCR test, the patient was admitted to our hospital. His respiratory status rapidly worsened and he was temporarily managed by ECMO in the intensive care unit. At the time of his first contact with us (day 31 post-hospitalization), he was unable to hold himself in a standing position for a long time and required a walker. Initially, from the perspective of preventing the spread of infection, we instructed him in self-directed training rather than individual therapy. From day 49, he began to receive physical therapy. He was discharged on day 53 with independence in outdoor walking. He was instructed to consume protein after exercising and he was managed on an outpatient basis. He returned to work. His skeletal muscle mass increased by BIA and his respiratory and motor functions were restored.He received instructions on recovering from severe illness after COVID-19 infection, which focused on nutrition, voluntary training, and monitored individual therapy in accordance with rehabilitation therapy. He was able to return to society with no sequelae.

COVID-19 spread from Wuhan City, People's Republic of China, in December 2019, followed by an explosion of infections worldwide. The number of infected people has also risen dramatically in Japan and has become a major social problem. Patients with severe disease require a long period to return to society due to significant physical weakness even after recovery. We report a patient in his 40s with a history of nephrectomy who was infected with COVID-19 and became critically ill.After being diagnosed with COVID-19 by PCR test, the patient was admitted to our hospital. His respiratory status rapidly worsened and he was temporarily managed by ECMO in the intensive care unit. At the time of his first contact with us (day 31 post-hospitalization), he was unable to hold himself in a standing position for a long time and required a walker. Initially, from the perspective of preventing the spread of infection, we instructed him in self-directed training rather than individual therapy. From day 49, he began to receive physical therapy. He was discharged on day 53 with independence in outdoor walking. He was instructed to consume protein after exercising and he was managed on an outpatient basis. He returned to work. His skeletal muscle mass increased by BIA and his respiratory and motor functions were restored.He received instructions on recovering from severe illness after COVID-19 infection, which focused on nutrition, voluntary training, and monitored individual therapy in accordance with rehabilitation therapy. He was able to return to society with no sequelae.