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Cited by 484

The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.

Effect of strength training on human patella tendon mechanical properties of older individuals

Open access
Reeves, N. D., Maganaris, C. N., Narici, M. V.·2003·The Journal of Physiology
DOI 10.1111/j..2003.t01-1-00971.x
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Abstract

This study investigated the effect of strength training on the mechanical properties of the human patella tendon of older individuals. Subjects were assigned to training (n = 9; age 74.3 +/- 3.5 years, body mass 69.7 +/- 14.8 kg and height 163.4 +/- 9.1 cm, mean +/- S.D.) and control (n = 9; age 67.1 +/- 2 years, body mass 73.5 +/- 14.9 kg and height 168.3 +/- 11.5 cm) groups. Strength training (two series of 10 repetitions at 80 % of five-repetition maximum) was performed three times per week for 14 weeks using leg extension and leg press exercises. Measurements of tendon elongation during a ramp isometric knee extension were performed before and after training and control periods in vivo using ultrasonography. Training caused a decreased tendon elongation and strain at all levels of force and stress (P < 0.01). Baseline tendon elongation and strain at maximal tendon load were 4.7 +/- 1.1 mm and 9.9 +/- 2.2 %, respectively (maximum force: 3346 +/- 1168 N; maximum stress: 40 +/- 11 MPa). After training, these values decreased to 2.9 +/- 1.2 mm and 5.9 +/- 2.4 % (P < 0.01), respectively (maximum force: 3555 +/- 1257 N; maximum stress: 42 +/- 11 MPa). Tendon stiffness increased by 65 % (2187 +/- 713 to 3609 +/- 1220 N mm-1; P < 0.05) and Young's modulus increased by 69 % (1.3 +/- 0.3 to 2.2 +/- 0.8 GPa; P < 0.01). As a result of these changes, the rate of torque development increased by 27 % (482.8 +/- 302.5 to 612.6 +/- 401 N m s-1; P < 0.01) following training. No significant changes occurred in any measured variables in the control group (P > 0.05). This study shows for the first time that strength training in old age increases the stiffness and Young's modulus of human tendons. This may reduce the risk of tendon injury in old age and has implications for contractile force production and the rapid execution of motor tasks.

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Metadata

Authors
Reeves, N. D., Maganaris, C. N., & Narici, M. V.
Venue
The Journal of Physiology
Publisher
Wiley
Published
2003-05
Volume
548
Issue
3
Pages
971-981
ISSN
  • 0022-3751 (ISSN-L)
  • 1469-7793
DOI
10.1111/j..2003.t01-1-00971.x
OpenAlex
W2135212058
Cited by
484
References
3
FWCI
16.45
Type
journal article
Language
en
Open access
green
Licence
doi.wiley.com/10.1002/tdm_license_1 (tdm, 4561 d)

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