Research
Print page Print page
Switch language
The Capital Region of Denmark - a part of Copenhagen University Hospital
Published

Training-induced changes in muscle CSA, muscle strength, EMG, and rate of force development in elderly subjects after long-term unilateral disuse

Research output: Contribution to journalJournal articleResearchpeer-review

  1. Increased respiratory neural drive and work of breathing in exercise-induced laryngeal obstruction

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Effects of anti-inflammatory (NSAID) treatment on human tendinopathic tissue

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Effects of strict prolonged bed rest on cardiorespiratory fitness: systematic review and meta-analysis

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Regulation of blood volume in lowlanders exposed to high altitude

    Research output: Contribution to journalReviewResearchpeer-review

  5. CORP: The assessment of total hemoglobin mass by carbon monoxide rebreathing

    Research output: Contribution to journalReviewResearchpeer-review

  1. Hyponatremia and metabolic bone disease in patients with epilepsy: A cross-sectional study

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Re-amputations and mortality after below-knee, through-knee and above-knee amputations

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Electrical Somatosensory Stimulation in Early Rehabilitation of Arm Paresis After Stroke: A Randomized Controlled Trial

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Cellular homeostatic tension and force transmission measured in human engineered tendon

    Research output: Contribution to journalJournal articleResearchpeer-review

View graph of relations

The ability to develop muscle force rapidly may be a very important factor to prevent a fall and to perform other tasks of daily life. However, information is still lacking on the range of training-induced neuromuscular adaptations in elderly humans recovering from a period of disuse. Therefore, the present study examined the effect of three types of training regimes after unilateral prolonged disuse and subsequent hip-replacement surgery on maximal muscle strength, rapid muscle force [rate of force development (RFD)], muscle activation, and muscle size. Thirty-six subjects (60-86 yr) were randomized to a 12-wk rehabilitation program consisting of either 1) strength training (3 times/wk for 12 wk), 2) electrical muscle stimulation (1 h/day for 12 wk), or 3) standard rehabilitation (1 h/day for 12 wk). The nonoperated side did not receive any intervention and thereby served as a within-subject control. Thirty subjects completed the trial. In the strength-training group, significant increases were observed in maximal isometric muscle strength (24%, P < 0.01), contractile RFD (26-45%, P < 0.05), and contractile impulse (27-32%, P < 0.05). No significant changes were seen in the two other training groups or in the nontrained legs of all three groups. Mean electromyogram signal amplitude of vastus lateralis was larger in the strength-training than in the standard-rehabilitation group at 5 and 12 wk (P < 0.05). In contrast to traditional physiotherapy and electrical stimulation, strength training increased muscle mass, maximal isometric strength, RFD, and muscle activation in elderly men and women recovering from long-term muscle disuse and subsequent hip surgery. The improvement in both muscle mass and neural function is likely to have important functional implications for elderly individuals.

Original languageEnglish
JournalJournal of Applied Physiology
Volume97
Issue number5
Pages (from-to)1954-61
Number of pages8
ISSN8750-7587
DOIs
Publication statusPublished - Nov 2004

    Research areas

  • Aged, Aged, 80 and over, Arthroplasty, Replacement, Hip, Electric Stimulation Therapy, Electromyography, Female, Humans, Isometric Contraction, Leg, Male, Middle Aged, Muscle, Skeletal, Osteoarthritis, Hip, Physical Education and Training, Physical Therapy Modalities, Prospective Studies, Single-Blind Method, Time Factors, Tomography, X-Ray Computed

ID: 44826775