Document Detail


Effects of combined strength and endurance training on treadmill load carrying walking performance in aging men.
MedLine Citation:
PMID:  20508463     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The present study examined the effects of twice weekly total body strength training (ST), endurance cycling (ET), and combined ST and ET (2+2 times a week) (SET) training on the load carrying walking test performance on the treadmill (TM) and changes in neuromuscular and endurance performance during a 21-week training period in aging men. Forty healthy men (54.8+/-8.0 years) were divided into 3 training groups (ET n=9, ST n=11, SET n=11) and a control group (C, n=9). Peak oxygen uptake (VO2peak), heart rate, and blood lactate concentration were measured before and after a 21-week training program using a graded TM and maximal incremental bicycle ergometer (BE) tests. Isometric forces, vertical jump, and electromyographic activity of leg extensor and/or forearm flexor (F) muscles were measured before and after training and the TM tests. Increases of 20-21% in strength and of 7-12% in cycling BE VO2peak occurred in the training groups, whereas the changes of C remained minor. VO2peak was associated, both before and after training, with TM exercise time in all groups (from r=0.65, p=0.030 to r=0.93, p<0.001). Only SET showed a significant training-induced increase (p=0.011) in exercise time of the TM walking with no significant increase in TM VO2peak. The present data suggest that in older men ET and SET induced specific increases in BE VO2peak and ST and SET in strength. However, only SET increased walking exercise time indicating improved load carrying walking performance because of large individual differences in the magnitude of the development of either strength or endurance capacities.
Authors:
Jarkko Holviala; Arja Häkkinen; Laura Karavirta; Kai Nyman; Mikel Izquierdo; Esteban M Gorostiaga; Janne Avela; Janne Korhonen; Veli-Pekka Knuutila; William J Kraemer; Keijo Häkkinen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  24     ISSN:  1533-4287     ISO Abbreviation:  J Strength Cond Res     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-05-28     Completed Date:  2010-09-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1584-95     Citation Subset:  IM    
Affiliation:
Department of Biology of Physical Activity, University of Jyväskylä, and Central Finland Central Hospital, Jyväskylä, Finland. jarkko.holviala@sport.jyu.fi
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological
Aged
Aging / physiology*
Body Mass Index
Exercise Test
Forearm / physiology
Heart Rate / physiology
Humans
Lactic Acid / blood
Leg / physiology
Male
Middle Aged
Muscle Strength / physiology*
Muscle, Skeletal / physiology
Oxygen Consumption / physiology
Physical Endurance / physiology*
Resistance Training*
Walking / physiology*
Chemical
Reg. No./Substance:
50-21-5/Lactic Acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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