Eight Weeks of High-Intensity Interval Static Strength Training Improves Skeletal Muscle Atrophy and Motor Function in Aged Rats via the PGC-1α/FNDC5/UCP1 Pathway

Eight Weeks of High-Intensity Interval Static Strength Training Improves Skeletal Muscle Atrophy and Motor Function in Aged Rats via the PGC-1α/FNDC5/UCP1 Pathway

Yijie Liu,1,2,* Chaoyang Guo,1,* Shuting Liu,1 Shuai Zhang,3 Yun Mao,4 Lei Fang1 1School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People’s Republic of China; 2Institute of Rehabilitation Medicine, Shanghai University of Traditional C...

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Autores principales: Liu Y, Guo C, Liu S, Zhang S, Mao Y, Fang L
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2021
Materias:
sarcopenia
static strength training
muscle function
pgc-1α
fndc5
Geriatrics
RC952-954.6
Acceso en línea:https://doaj.org/article/39ddcbbf0471441dae95c113dbb45591
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spelling oai:doaj.org-article:39ddcbbf0471441dae95c113dbb455912021-12-02T14:36:42ZEight Weeks of High-Intensity Interval Static Strength Training Improves Skeletal Muscle Atrophy and Motor Function in Aged Rats via the PGC-1α/FNDC5/UCP1 Pathway1178-1998https://doaj.org/article/39ddcbbf0471441dae95c113dbb455912021-05-01T00:00:00Zhttps://www.dovepress.com/eight-weeks-of-high-intensity-interval-static-strength-training-improv-peer-reviewed-fulltext-article-CIAhttps://doaj.org/toc/1178-1998Yijie Liu,1,2,* Chaoyang Guo,1,* Shuting Liu,1 Shuai Zhang,3 Yun Mao,4 Lei Fang1 1School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People’s Republic of China; 2Institute of Rehabilitation Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People’s Republic of China; 3Department of Orthopaedics, Shanghai Pudong New District Hospital of Traditional Chinese Medicine, Shanghai, 201200, People’s Republic of China; 4Department of Rehabilitation Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, 201803, People’s Republic of China*These authors contributed equally to this workCorrespondence: Lei Fang Email fanglei586@126.comBackground: Sarcopenia is a syndrome characterized by the loss of skeletal muscle mass and strength. Most studies have focused on dynamic resistance exercises for preventing muscular decline and maintaining the muscle strength of older individuals. However, this training mode is impractical for older people with osteoarthritis and a limited range of motion. The static strength training mode is more suitable for older people. Therefore, a determination of the effect and mechanism of static strength training on sarcopenia is critical.Methods: In this study, we developed a training device designed to collect training data and evaluate the effects of static training on the upper limbs of rats. The expression of PGC-1α was locally blocked by injecting a siRNA at the midpoint of the biceps to determine whether PGC-1α signal transduction participates in the effects of high-intensity interval static training on muscle strength. Then, the rat’s motor capacity was measured after static strength training. Immunohistochemistry and Western blotting were applied to determine PGC-1α/FNDC5/UCP1 expression levels in the muscle and adipose tissue. The serum irisin level was also detected using an enzyme-linked immunosorbent assay (ELISA).Results: Increased levels of serum irisin and local expression of FNDC5, PGC-1α, and UCP1 were observed in the biceps brachii and surrounding fatty tissue after static strength training. Static strength training showed an advantage in reducing body weight and white fat accumulation while increasing the muscle fiber volume, which resulted in a longer training time and shorter rest time.Conclusion: Overall, these results indicated that high-intensity interval static training prevents skeletal muscle atrophy and improves the motor function of aged rats through the PGC-1α/FNDC5/UCP1 signaling pathway.Keywords: sarcopenia, static strength training, muscle function, PGC-1α, FNDC5Liu YGuo CLiu SZhang SMao YFang LDove Medical Pressarticlesarcopeniastatic strength trainingmuscle functionpgc-1αfndc5GeriatricsRC952-954.6ENClinical Interventions in Aging, Vol Volume 16, Pp 811-821 (2021)
institution DOAJ
collection DOAJ
language EN
topic sarcopenia
static strength training
muscle function
pgc-1α
fndc5
Geriatrics
RC952-954.6
spellingShingle sarcopenia
static strength training
muscle function
pgc-1α
fndc5
Geriatrics
RC952-954.6
Liu Y
Guo C
Liu S
Zhang S
Mao Y
Fang L
Eight Weeks of High-Intensity Interval Static Strength Training Improves Skeletal Muscle Atrophy and Motor Function in Aged Rats via the PGC-1α/FNDC5/UCP1 Pathway
description Yijie Liu,1,2,* Chaoyang Guo,1,* Shuting Liu,1 Shuai Zhang,3 Yun Mao,4 Lei Fang1 1School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People’s Republic of China; 2Institute of Rehabilitation Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People’s Republic of China; 3Department of Orthopaedics, Shanghai Pudong New District Hospital of Traditional Chinese Medicine, Shanghai, 201200, People’s Republic of China; 4Department of Rehabilitation Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, 201803, People’s Republic of China*These authors contributed equally to this workCorrespondence: Lei Fang Email fanglei586@126.comBackground: Sarcopenia is a syndrome characterized by the loss of skeletal muscle mass and strength. Most studies have focused on dynamic resistance exercises for preventing muscular decline and maintaining the muscle strength of older individuals. However, this training mode is impractical for older people with osteoarthritis and a limited range of motion. The static strength training mode is more suitable for older people. Therefore, a determination of the effect and mechanism of static strength training on sarcopenia is critical.Methods: In this study, we developed a training device designed to collect training data and evaluate the effects of static training on the upper limbs of rats. The expression of PGC-1α was locally blocked by injecting a siRNA at the midpoint of the biceps to determine whether PGC-1α signal transduction participates in the effects of high-intensity interval static training on muscle strength. Then, the rat’s motor capacity was measured after static strength training. Immunohistochemistry and Western blotting were applied to determine PGC-1α/FNDC5/UCP1 expression levels in the muscle and adipose tissue. The serum irisin level was also detected using an enzyme-linked immunosorbent assay (ELISA).Results: Increased levels of serum irisin and local expression of FNDC5, PGC-1α, and UCP1 were observed in the biceps brachii and surrounding fatty tissue after static strength training. Static strength training showed an advantage in reducing body weight and white fat accumulation while increasing the muscle fiber volume, which resulted in a longer training time and shorter rest time.Conclusion: Overall, these results indicated that high-intensity interval static training prevents skeletal muscle atrophy and improves the motor function of aged rats through the PGC-1α/FNDC5/UCP1 signaling pathway.Keywords: sarcopenia, static strength training, muscle function, PGC-1α, FNDC5
format article
author Liu Y
Guo C
Liu S
Zhang S
Mao Y
Fang L
author_facet Liu Y
Guo C
Liu S
Zhang S
Mao Y
Fang L
author_sort Liu Y
title Eight Weeks of High-Intensity Interval Static Strength Training Improves Skeletal Muscle Atrophy and Motor Function in Aged Rats via the PGC-1α/FNDC5/UCP1 Pathway
title_short Eight Weeks of High-Intensity Interval Static Strength Training Improves Skeletal Muscle Atrophy and Motor Function in Aged Rats via the PGC-1α/FNDC5/UCP1 Pathway
title_full Eight Weeks of High-Intensity Interval Static Strength Training Improves Skeletal Muscle Atrophy and Motor Function in Aged Rats via the PGC-1α/FNDC5/UCP1 Pathway
title_fullStr Eight Weeks of High-Intensity Interval Static Strength Training Improves Skeletal Muscle Atrophy and Motor Function in Aged Rats via the PGC-1α/FNDC5/UCP1 Pathway
title_full_unstemmed Eight Weeks of High-Intensity Interval Static Strength Training Improves Skeletal Muscle Atrophy and Motor Function in Aged Rats via the PGC-1α/FNDC5/UCP1 Pathway
title_sort eight weeks of high-intensity interval static strength training improves skeletal muscle atrophy and motor function in aged rats via the pgc-1α/fndc5/ucp1 pathway
publisher Dove Medical Press
publishDate 2021
url https://doaj.org/article/39ddcbbf0471441dae95c113dbb45591
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