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Influence of exercise intensity on training-induced tendon mechanical properties changes in older individuals
Authors
A Arampatzis
A Comas-Herrera
+43 more
AJ Blake
B Carolan
C Hautier
CI Morse
CJ Mitchell
Claire E. Stewart
E Weening-Dijksterhuis
E Westh
F Bunn
GL Onambele
GL Onambele
GL Onambele
GL Onambele-Pearson
Gladys L. Onambélé
GN Onambele
HJ Hermens
ID Loram
Jean-Francois Grosset
K Hebert
K Karamanidis
K Kubo
K Kubo
K Kubo
KA Schutzer
Katherine E. Burgess
KE Burgess
L Breen
Leigh Breen
M Chiquet
M Chiquet
M Kjaer
M Kongsgaard
M Lavagnino
ME Nelson
N Rekeneire de
NA Burd
ND Reeves
ND Reeves
OC Lippold
S Rosager
SJ Pearson
SJ Pearson
TJ Doherty
Publication date
24 April 2014
Publisher
'Springer Science and Business Media LLC'
Doi
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on
PubMed
Abstract
This study compared the effects of low vs. high intensity training on tendon properties in an elderly population. Participants were pair-matched (gender, habitual physical activity, anthropometrics, and baseline knee extension strength) and then randomly assigned to low (LowR, i.e., ∼40 % 1RM) or high (High R, i.e., ∼80 % 1RM) intensity resistance training programmes for 12 weeks, 3x per week (LowR, n = 9, age 74 ± 5 years; HighR, n = 8, age 68 ± 6 years). Patellar tendon properties (stiffness [K], Young's modulus [YM], cross-sectional area [T CSA], and tendon length [T L]) were measured pre and post training using a combination of magnetic resonance imaging (MRI), B-mode ultrasonography, dynamometry, electromyography and ramped isometric knee extensions. With training K showed no significant change in the LowR group while it incremented by 57.7 % in the HighR group (p < 0.05). The 51.1 % group difference was significant (p < 0.05). These differences were still apparent when the data was normalized for T CSA and T L, i.e., significant increase in YM post-intervention in HighR (p < 0.05), but no change in LowR. These findings suggest that when prescribing exercise for a mixed genders elderly population, exercise intensities of ≤40 % 1RM may not be sufficient to affect tendon properties. © 2014 American Aging Association
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info:doi/10.1007%2Fs11357-014-...
Last time updated on 11/12/2019
Open Access Institutional Repository at Robert Gordon University
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oai:rgu-repository.worktribe.c...
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E-space: Manchester Metropolitan University's Research Repository
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oai:e-space.mmu.ac.uk:605474
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