TY - JOUR T1 - Effects of intra-session concurrent endurance and strength training sequence on aerobic performance and capacity JF - British Journal of Sports Medicine JO - Br J Sports Med SP - 555 LP - 560 DO - 10.1136/bjsm.2004.015248 VL - 39 IS - 8 AU - M Chtara AU - K Chamari AU - M Chaouachi AU - A Chaouachi AU - D Koubaa AU - Y Feki AU - G P Millet AU - M Amri Y1 - 2005/08/01 UR - http://bjsm.bmj.com/content/39/8/555.abstract N2 - 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 (vV˙o2max). 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 vV˙o2max; (3) a time to exhaustion test (tlim) at 100% vV˙o2max; (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 vV˙o2max (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. ER -