| Background: aging process is associated with changes in muscle mass and strength with decline of muscle strength after the 30th life year. The aim of this study was to investigate these changes in muscle mass and strength. Patients & Methods: for this analysis 26 participants were subdivided in two groups. Group 1 comprises participants aged <40 years (n=14), group 2 those >40 years (n=12). We assessed anthropometrics, range of motions, leg circumferences and isometric strength values of the knee joints. Results: besides comparable anthropometrics, circumferences and strength were higher in group 1 than in group 2. Circumference of upper leg (20 cm above knee articular space) showed for right leg a trend to a significant (median: 54.45 cm (1st quartile: 49.35/ 3rd quartile: 57.78) vs 49.80 cm (49.50/50.75), p=0.0526) and for left leg a significant 54.30 cm (49.28/58.13) vs 49.50 cm (48.00/52.53), p=0.0356) larger circumference in group 1. Isometric strength was in 60° knee flexion significantly higher in group 1 than in group 2 for right (729.88N (561.47/862.13) vs 456.92N (304.67/560.12), p=0.00448) and left leg (702.49N (581.36/983.87) vs 528.49N (332.95/648.58), p=0.0234). Conclusions: aging process leads to distinct muscle mass and strength loss. Muscle strength declines from people aged <40 years to those >40 years between 16.6% and 40.9%. |
“Strength and muscle mass loss with aging process. Age and strength loss”
Keller K., Engelhardt M.
Original Article, 346 - 350
Keywords: age, aging, isometric, muscle, sarcopenia, strength,
Table of Content: Vol. 3 (No. 4) 2013 October/December
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Errata corrige
Errata Corrige, 0 -
ISMuLT skeletal muscles injuries Guidelines
Maffulli N., Nanni G.Editorial, 240 -
ISMuLT Guidelines for muscle injuries
Maffulli N., Oliva F., Frizziero A., Nanni G., Barazzuol M., Giai Via A., Ramponi C., Brancaccio P., Lisitano G., Rizzo D., Freschi M., Galletti S., Melegati G., Pasta G., Testa V., Valent A., Del Buono A.Guidelines, 241 - 249 -
Muscle, Ligaments and Tendons Journal. Basic principles and recommendations in clinical and field science research
Padulo J., Oliva F., Frizziero A., Maffulli N.Technical Note, 250 - 252 -
Basic science & clinic around skeletal muscles
Falcieri E.Editorial, 253 -
Mitohormesis in muscle cells: a morphological, molecular, and proteomic approach
Berbieri E., Sestili P., Vallorani L., Guescini M., Calcabrini C., Gioacchini A.M., Annibalini G., Lucertini F., Piccoli G., Stocchi V.Review, 254 - 266 -
Further considerations on in vitro skeletal muscle cell death
Battistelli M., Salucci S., Burattini S., Falcieri E.Review, 267 - 274 -
Morphogenesis of rat myotendinous junction
Curzi D., Ambrogini P., Falcieri E., Burattini S.Original Article, 275 - 280 -
Ultrastructural changes in muscle cells of patients with collagen VI-related myopathies
Tagliavini F., Sardone F., Squarzoni S., Maraldi N.M., Merlini L., Faldini C., Sabatelli P.Original Article, 281 - 286 -
Ultrastructural features of skeletal muscle in adult and aging Ts65Dn mice, a murine model of Down syndrome
Cisterna B., Costanzo M., Scherini E., Zancanaro C., Malatesta M.Original Article, 287 - 294 -
Compression garments to prevent delayed onset muscle soreness in soccer players
Valle X., Til L., Drobnic F., Turmo A., Montoro J.B., Valero O., Artells R.Original Article, 295 - 302 -
“Rhabdomyolysis. The role of diagnostic and prognostic factors”
Keltz E., Khan F.Y., Mann G.Review, 303 - 312 -
Surgical repair of muscle laceration: biomechanical properties at 6 years follow-up
Oliva F., Giai Via A., Kiritsi O., Foti C., Maffulli N.Original Article, 313 - 317 -
The acute effect of the tongue position in the mouth on knee isokinetic test performance: a highly surprising pilot study
di Vico R., Ardigò L. P., Salernitano G., Chamari K., Padulo J.Original Article, 318 - 323 -
Reducing muscle injuries and reinjuries in one italian professional male soccer team
Melegati G., Tornese D., Trabattoni A., Gevi M., Pozzi G., Schonhuber H., Volpi P.Original Article, 324 - 330 -
Thigh muscles injuries in professional soccer players: a one year longitudinal study
Corazza A., Orlandi D., Baldari A., Gatto P., Stellatelli M., Mazzola C., Galli R., Longo S., Sconfienza L.M., Silvestri E.Original Article, 331 - 336 -
Regeneration of injured skeletal muscle after the injury
Järvinen T. AH, Järvinen M., Kalimo H.Review, 337 - 345 -
“Strength and muscle mass loss with aging process. Age and strength loss”
Keller K., Engelhardt M.Original Article, 346 - 350 -
Fatty infiltration of the shoulder: diagnosis and reversibility
Osti L., Buda M., Del Buono A.Review, 351 - 354 -
Insight in spastic musculoskeletal structures in cerebral palsy: impaired or compensatory structural changes?
Di Lorenzo L., Forte A.M., Forte F.Letter to the Editor, 356 - 358 -
My experience from ECOSEP Bauerfeind Travelling Fellowship 2013
Nikos M., Valle X., Tsapralis K., Lohrer H., Padhiar N., Maffulli N.Letter to the Editor, 358