The acute effects of eccentrically-biased versus conventional weight training in older adults : a randomised controlled cross-over study

Raj, Isaac S., Westfold, Ben, Shield, Anthony, Linden, Matthew, & Bird, Stephen (2014) The acute effects of eccentrically-biased versus conventional weight training in older adults : a randomised controlled cross-over study. Journal of Frailty and Aging, 3(2), pp. 132-138.

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Whilst resistance training has been proven to convey considerable benefits to older people; immediately post-exercise there may be elevated transient risks for cardiac events and falls.

Objectives and Measurements

We assessed the acute effects of eccentrically-biased (EB) and conventional (CONV) resistance exercise on: platelet number, activation and granule exocytsosis; and mean velocity of centre of pressure displacement (Vm).

Design, Setting, Participants and Intervention

Ten older adults (7 males, 3 females; 69 ± 4 years) participated in this randomised controlled cross-over study in which they performed EB and CONV training sessions that were matched for total work and a control condition.


Immediately post-exercise there was a statistically significant difference in platelet count between the control condition, in which it fell (pre 224 ± 35 109/L; post 211 ± 30 109/L: P < 0.05) and CONV in which it increased (pre 236 ± 55 109/L; post 242 ± 51 109/L: P > 0.05). There was no change in platelet activation and granule exocytsosis or Vm following EB and CONV.


Overall, while minor differences between regimens were observed, no major adverse effect on parameters of platelet function or centre of pressure displacement were observed acutely following either regimen. Eccentrically-biased and conventional resistance exercise training regimens do not appear to present an elevated acute risk in the context of changes to platelet function contributing to a cardiac event or postural stability increasing falls risk for apparently healthy older adults.

Impact and interest:

15 citations in Web of Science®
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48 since deposited on 14 Jan 2014
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ID Code: 66165
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Resistance exercise, Platelets, Postural control
ISSN: 2260-1341
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > HUMAN MOVEMENT AND SPORTS SCIENCE (110600)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2014 Please consult the authors
Deposited On: 14 Jan 2014 23:46
Last Modified: 06 Jul 2017 14:47

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