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Resistance Training in the Early Postoperative Phase Reduces Hospitalization and Leads to Muscle Hypertrophy in Elderly Hip Surgery Patients—A Controlled, Randomized Study

Authors

  • Charlotte Suetta MD,

    1. From the *Sports Medicine Research Unit, Team Danmark Testcenter, Department of Radiology, §Department of PhysiotherapyDepartment of Orthopedics, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.
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  • S. Peter Magnusson DMSc,

    1. From the *Sports Medicine Research Unit, Team Danmark Testcenter, Department of Radiology, §Department of PhysiotherapyDepartment of Orthopedics, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.
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  • Anna Rosted MD,

    1. From the *Sports Medicine Research Unit, Team Danmark Testcenter, Department of Radiology, §Department of PhysiotherapyDepartment of Orthopedics, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.
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  • Per Aagaard PhD, Prof,

    1. From the *Sports Medicine Research Unit, Team Danmark Testcenter, Department of Radiology, §Department of PhysiotherapyDepartment of Orthopedics, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.
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  • Ane K. Jakobsen,

    1. From the *Sports Medicine Research Unit, Team Danmark Testcenter, Department of Radiology, §Department of PhysiotherapyDepartment of Orthopedics, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.
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  • Lone H. Larsen PT,

    1. From the *Sports Medicine Research Unit, Team Danmark Testcenter, Department of Radiology, §Department of PhysiotherapyDepartment of Orthopedics, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.
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  • Benn Duus MD,

    1. From the *Sports Medicine Research Unit, Team Danmark Testcenter, Department of Radiology, §Department of PhysiotherapyDepartment of Orthopedics, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.
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  • Michael Kjaer DMSc, Prof

    1. From the *Sports Medicine Research Unit, Team Danmark Testcenter, Department of Radiology, §Department of PhysiotherapyDepartment of Orthopedics, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.
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Charlotte Suetta, MD, Sports Medicine Research Unit, Bispebjerg Hospital, Bispebjerg Bakke 23, 2400 NV—Copenhagen, Denmark. E-mail: cs08@bbh.hosp.dk

Abstract

Objectives: To better understand how immobilization and surgery affect muscle size and function in the elderly and to identify effective training regimes.

Design: A prospective randomized, controlled study.

Setting: Bispebjerg University Hospital, Copenhagen, Denmark.

Participants: Thirty-six patients (aged 60–86) scheduled for unilateral hip replacement due to primary hip osteoarthrosis.

Intervention: Patients were randomized to standard home-based rehabilitation (1 h/d × 12 weeks), unilateral neuromuscular electrical stimulation of the operated side (1 h/d × 12 weeks), or unilateral resistance training of the operated side (3/wk × 12 weeks).

Measurements: Hospital length of stay (LOS), quadriceps muscle cross-sectional area (CSA), isokinetic muscle strength, and functional performance. Patients were tested presurgery and 5 and 12 weeks postsurgery

Results: Mean±standard error LOS was shorter for the resistance training group (10.0±2.4 days, P<.05) than for the standard rehabilitation group (16.0±7.2 days). Resistance training, but not electrical stimulation or standard rehabilitation, resulted in increased CSA (12%, P<.05) and muscle strength (22–28%, P<.05). Functional muscle performance increased after resistance training (30%, P<.001) and electrical stimulation (15%, P<.05) but not after standard rehabilitation.

Conclusion: Postoperative resistance training effectively increased maximal muscle strength, muscle mass, and muscle function more than a standard rehabilitation regime. Furthermore, it markedly reduced LOS in elderly postoperative patients.

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