Muscle mass and strength gains following 6 months of resistance type exercise training are only partly preserved within one year with autonomous exercise continuation in older adults
Autor: | L.J.C. van Loon, Tim Snijders, Lex B. Verdijk, Marika Leenders, L. C. P. G. M. De Groot |
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Přispěvatelé: | Physiotherapy, Human Physiology and Anatomy, Human Physiology and Sports Physiotherapy Research Group, Humane Biologie, RS: NUTRIM - R3 - Respiratory & Age-related Health, Promovendi NTM |
Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
Male
0301 basic medicine Aging Sarcopenia Knee Joint Detraining MUSCULAR STRENGTH Physical strength Biochemistry Quadriceps Muscle 0302 clinical medicine Endocrinology FIBER HYPERTROPHY Regular exercise Medicine Leg press Hand Strength medicine.diagnostic_test MEN HUMAN SKELETAL-MUSCLE Nutritional Biology Body Composition Female medicine.medical_specialty Muscle mass 03 medical and health sciences Myonuclei AGE SATELLITE CELLS Genetics Humans QUALITY Muscle Strength Molecular Biology Aged VLAG Muscle biopsy business.industry MEMORY Resistance Training Cell Biology Anthropometry PERFORMANCE medicine.disease PROTEIN SUPPLEMENTATION Discontinuation Ageing 030104 developmental biology Exercise Test Physical therapy business Satellite cell 030217 neurology & neurosurgery Follow-Up Studies |
Zdroj: | Experimental Gerontology, 121, 71-78 Experimental Gerontology, 121, 71-78. Elsevier Science Experimental Gerontology 121 (2019) |
ISSN: | 0531-5565 |
Popis: | Introduction: Although resistance type exercise training (RT) effectively increases muscle mass and strength in older individuals, it remains unclear whether gains in muscle mass and strength are maintained without continued supervised training. We assessed the capacity of older individuals to maintain muscle mass and strength gains one year after partaking in a successful RT program.Methods: Fifty-three healthy older adults performed a 24-wk supervised RT program. Upon the cessation of the training program, participants were not provided with any advice or incentives to continue exercise training. One year after completion of the training program, all participants were contacted and invited back to the laboratory to assess anthropometrics, body composition (DXA), quadriceps muscle cross-sectional area (CSA) (CT-scan), muscle strength (1RM knee extension/leg press), and muscle fiber characteristics (muscle biopsy). Following primary analyses on all participants that responded to the invitation (n = 35), participants were divided into two groups: individuals who had continued to perform exercise training on an individual basis (EXER group; n = 16) and individuals who had not continued to perform any regular exercise (STOP group; n = 19) after completing the RT program.Results: The initial increases in quadriceps CSA ( + 506 +/- 209 and +584 +/- 287 mm(2)) and knee extension strength ( + 32 +/- 12 vs +34 +/- 10 kg) after the 24-wk RT program did not differ between the STOP and EXER group (all P > 0.05). One year after discontinuation of the RT program, participants had lost muscle mass (P 0.05), yet remained higher compared with values before the RT program (P Conclusion: Though prolonged RT can effectively increase muscle mass and strength in the older population, muscle mass gains are lost and muscle strength gains are only partly preserved within one year if the supervised exercise program is not continued. |
Databáze: | OpenAIRE |
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