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Br J Sports Med 39:555-560 doi:10.1136/bjsm.2004.015248
  • Original article

Effects of intra-session concurrent endurance and strength training sequence on aerobic performance and capacity

  1. M Chtara1,
  2. K Chamari2,
  3. M Chaouachi1,
  4. A Chaouachi2,
  5. D Koubaa2,
  6. Y Feki4,
  7. G P Millet3,
  8. M Amri1
  1. 1Laboratoire de Physiologie de la Nutrition, Faculté des Sciences de Tunis, El Manar, Tunisia
  2. 2National Center of Medicine and Sciences in Sports (NCMSS), El Menzah, Tunisia
  3. 3UPRES 37-59, Faculty of Sports Sciences, University of Montpellier, Montpellier, France
  4. 4Institut Supérieur du Sport et de l’Education Physique, Ksar Said, Tunisia
  1. Correspondence to:
 K Chamari
 National Center of Medicine and Sciences in Sports, Physiology Department, Unité de Recherche “Evaluation, Sport, Santé”, BP 263, Ave Mohamed Ali Akid, El Menzah 1004, Tunisia; karimchamarigmx.net
  • Accepted 10 November 2004

Abstract

Aim: To examine the effects of the sequencing order of individualised intermittent endurance training combined with muscular strengthening on aerobic performance and capacity.

Methods: Forty eight male sport students (mean (SD) age 21.4 (1.3) years) were divided into five homogeneous groups according to their maximal aerobic speeds (vo2max). Four groups participated in various training programmes for 12 weeks (two sessions a week) as follows: E (n  =  10), running endurance training; S (n  =  9), strength circuit training; E+S (n  =  10) and S+E (n  =  10) combined the two programmes in a different order during the same training session. Group C (n  =  9) served as a control. All the subjects were evaluated before (T0) and after (T1) the training period using four tests: (1) a 4 km time trial running test; (2) an incremental track test to estimate vo2max; (3) a time to exhaustion test (tlim) at 100% vo2max; (4) a maximal cycling laboratory test to assess V˙o2max.

Results: Training produced significant improvements in performance and aerobic capacity in the 4 km time trial with interaction effect (p<0.001). The improvements were significantly higher for the E+S group than for the E, S+E, and S groups: 8.6%, 5.7%, 4.7%, and 2.5% for the 4 km test (p<0.05); 10.4%, 8.3%, 8.2%, and 1.6% for vo2max (p<0.01); 13.7%, 10.1%, 11.0%, and 6.4% for V˙o2max (ml/kg0.75/min) (p<0.05) respectively. Similar significant results were observed for tlim and the second ventilatory threshold (%V˙o2max).

Conclusions: Circuit training immediately after individualised endurance training in the same session (E+S) produced greater improvement in the 4 km time trial and aerobic capacity than the opposite order or each of the training programmes performed separately.

Footnotes

  • Competing interests: none declared

    This study was financially supported by Ministère de la Recherche Scientifique, de la Technologie et du développement des Compétences, Tunisia