Die Trainierbarkeit menschlicher Muskeln in Abhängigkeit vom Alter und Geschlecht

Hettinger, T

doi:10.1007/bf00698760

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…In agreement with studies that observed a blunted response of maximum strength to resistance exercise at higher age,13,14,22 our primary hypothesis was that trainability of the maximum dynamic strength of the hip/leg extensors (maximum isokinetic leg/hip extensor strength, MIES) decreases during the adult male lifespan with significant differences between the age of <35 and ≥65 years.…”

Section: Introductionsupporting

confidence: 87%

“…Due to the lack of corresponding WB-EMS approaches, only a few trials12–15,30,31 properly compared trainability of lower extremity muscle strength between different periods of life. Early research22 reported a very pronounced decline in trainability. Quantifying this reduction, trainability of men aged 65 years averaged only one-third of the maximum train-ability (=100%) at the age of 25 years.…”

Section: Discussionmentioning

confidence: 98%

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Trainability of leg strength by whole-body electromyostimulation during adult lifespan: a study with male cohorts

Stengel¹,

Kemmler²

2018

CIA

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BackgroundThe age-related decline in muscle strength is a well documented phenomenon in human beings. Resistance-type exercise including the novel, joint-friendly, and time-efficient whole-body electromyostimulation (WB-EMS) technology decelerates this unfavorable decline. However, the issue of trainability of the neuromuscular system during different periods of life still remains, especially for WB-EMS. Thus, the aim of this study was to compare the changes in maximum isokinetic leg/hip extensor strength (MIES) and maximum isokinetic leg/hip flexor strength (MIFS) after WB-EMS interventions in men in different periods of life. Our hypothesis was that although WB-EMS significantly increases lower extremity strength in all periods of adults’ life, trainability decreases with age with a significantly higher increase at the age of 20–35 years compared with that at the age of 65+ years.Subjects and methodsUsing an isokinetic leg press, we determined the changes in MIES and MIFS in 118 community-dwelling men aged 27–89 years after 14–16 weeks of WB-EMS interventions applying identical protocols. Men were structured in 15 year-ranged age groups starting at the age of 20–35 years and ending at the age of 80+ years.ResultsMost importantly, WB-EMS-induced gains in MIES and MIFS were significant (P<0.001) in all the groups. Changes in MIFS were on average about twice as high compared with MIES (18–25% vs 9–15%). Applying one-way ANOVA, we observed a trend to lower trainability with increasing age (P=0.060) for MIES. Pairwise tests confirmed our hypothesis that the youngest subgroup differs significantly for MIES from men aged 65+ years (P=0.007). In parallel, one-way ANOVA determined a significant between-group difference (P=0.046) for MIFS; however, we did not determine a significant difference between men aged <35 years and 65+ years.ConclusionWe observed an inconsistent tendency for blunted WB-EMS-induced lower extremity strength gains in older adults. However, much more importantly, the general effectiveness of WB-EMS to significantly increase maximum hip/leg strength during the adult lifespan can be confirmed.

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Section: Introductionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 98%

Trainability of leg strength by whole-body electromyostimulation during adult lifespan: a study with male cohorts

Stengel¹,

Kemmler²

2018

CIA

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“…Während von den fünf motorischen Hauptbeanspruchungsformen (3) Flexibilität und Koordination weitgehend unabhängig vom Muskelstatus sind, sind Kraft, Schnelligkeit und Ausdauer das Produkt der harmonischen Entwicklung von Muskel und Skelettsystem. Der entscheidende Wachstumszuwachs in der Muskulatur tritt erst mit der Produktion androgener Hormone ein (2). Bis dahin sind zwar durchaus Zuwächse durch entsprechende übungen zu erreichen, jedoch sind sie im Vergleich zur Entwicklung der Kraft in der Pubertät gering.…”

Section: Pubertal Development and School Sportsunclassified

“…Der Sportpädagoge ist daher gezwungen, eine richtige Altersplazierung von Curriculumelementen unter den Gesichtspunkten von Trainierbarkeit und Belastbarkeit durchzuflihren (l, 6). Nicht zuletzt folgt die Trainierbarkeit des Muskelsystems "in erster Linie der sexuellen Reife und nicht dem Alter"(2). Ist nun das chronologische Alter (= Schulalter) oder ein anderer Parameter (= Reifestatus) ftir die Einschätzung der körperlichen Leistungsfähigkeit und -bereitschaft für die Sportlehrer von Bedeutung?…”

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Der Pubertätsstatus der Schüler in den Orientierungsstufen im Hinblick auf den Schulsport

Jüngst¹,

Haas²,

Jüngst-Gieg³

et al. 1983

Klin Padiatr

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Tanner scores of pubertal development were determined in 194 girls and 190 boys of the fifth and sixth grades. There was a wide scatter of Tanner scores both within and between sexes, reflecting considerable variability of pubertal development in these age cohorts. Physical performance depends on muscle mass and muscle strength. Since these variables are related to pubertal development, training programs and training goals must take the stage of pubertal development into consideration. A comparison of Tanner scores and sport ratings showed that the factor "pubertal development" is usually accounted for in daily practice.

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Untersuchungen �ber die Entwicklung der Handgeschicklichkeit von Kindern und Jugendlichen

1962

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Die Trainierbarkeit menschlicher Muskeln in Abhängigkeit vom Alter und Geschlecht

Cited by 7 publications

References 8 publications

Trainability of leg strength by whole-body electromyostimulation during adult lifespan: a study with male cohorts

Trainability of leg strength by whole-body electromyostimulation during adult lifespan: a study with male cohorts

Der Pubertätsstatus der Schüler in den Orientierungsstufen im Hinblick auf den Schulsport

Untersuchungen �ber die Entwicklung der Handgeschicklichkeit von Kindern und Jugendlichen

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