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J. Yamanoi1,2
1Aichi Saisekai Hospital, Rehabilitation, Nagoya, Japan, 2Suzuka University of Medical Science, Suzuka, Japan
Background: Chronic stroke survivors tend to be inactive, often with sarcopenia, and have decreased physical function and activities of daily living. Muscle atrophy and weakness differ between sarcopenia patients and stroke patients. Therefore, it is difficult to evaluate physiotherapy and intervention for sarcopenic patients with stroke.
Purpose: The purpose of this study was to identify muscles that cause muscle weakness and muscle atrophy in stroke sarcopenia patients.
Methods: The subjects were 157 chronic stroke survivors who were 65 years or older. The subjects were determined using the criteria of the Asian Working Group on Sarcopenia in 2019 to determine the presence of sarcopenia and were classified into sarcopenia group (SG, n=70) and non-sarcopenia group (nSG, n=87).The lower limb atrophy assessments obtained unaffected lower limb muscle thickness (iliopsoas, gluteus maximus, gluteus medius, hamstrings, quadriceps femoris,tibialis anterior, triceps surae) using B-mode of transverse ultrasound imaging. The lower limb strength assessments obtained unaffected lower limb muscle strength (flexion, extension, abduction,
adduction, external rotation and internal rotation of hip joint, flexion and extension of knee joint, planter flexion and dorsiflexion of ankle joint) using handheld dynamometer. We conducted a Student’s t-test to compare the two groups. The criterion for statistical significance was p<0.05.
adduction, external rotation and internal rotation of hip joint, flexion and extension of knee joint, planter flexion and dorsiflexion of ankle joint) using handheld dynamometer. We conducted a Student’s t-test to compare the two groups. The criterion for statistical significance was p<0.05.
Results: SG had weakness in all joint direction and atrophy in all muscles compared to nSG (p < 0.05). In particular, extension of knee joint and planter flexion of ankle joint weakness, quadriceps femoris and triceps surae atrophy occurred (p < 0.01).
Conclusion(s): Assessment and intervention of skeletal muscle in stroke sarcopenia patients should focus on the knee joint and ankle joint.
Implications: We explained the content of the research to the participants or their families verbally and in writing and obtained written consent. This survey conforms to the ethical standards of the Declaration of Helsinki.
Funding, acknowledgements: The authors declare no conflicts of interest associated with this manuscript.
Keywords: Muscle strength and Muscle atrophy, chronic stroke, sarcopenia
Topic: Neurology: stroke
Did this work require ethics approval? Yes
Institution: Aichi Saiseikai Hospital
Committee: Aichi Saiseikai Hospital
Ethics number: 201908
All authors, affiliations and abstracts have been published as submitted.
