caa a22 4500 467941947 CHVBK 20180406153015.0 cr unu---uuuuu 170328e20060601xx s 000 0 eng 10.1007/s00421-006-0165-1 doi (NATIONALLICENCE)springer-10.1007/s00421-006-0165-1 The effect of unilateral and bilateral strength training on the bilateral deficit and lean tissue mass in post-menopausal women [Elektronische Daten] [Cora Janzen, Philip Chilibeck, K. Davison] Some have observed maximal strength of simultaneous bilateral homologous limb contraction is less than the sum of strengths of right and left limbs contracting alone; a phenomenon referred to as the bilateral deficit (BLD). There is controversy on whether there is a BLD for all exercises. We assessed whether a BLD occurs across different exercises (leg press, knee extension, and lat pull-down), whether the BLD could be altered with unilateral or bilateral training, and whether unilateral versus bilateral training was more beneficial for increasing lean tissue mass (LTM). Post-menopausal women (~57years) were randomized to bilateral (n=14) and unilateral (n=12) training, or non-training control (n=24) groups. Bilateral training involved seven exercises performed with bilateral contractions (two sets, 3daysweek−1, 26weeks). Unilateral training involved the same exercises performed with one limb at a time. A BLD was found for leg press and lat pull-down, but not for knee extension. Bilateral training decreased the BLD; whereas unilateral training had minimal effect on the BLD. The unilateral-training group had a greater increase in lower-body LTM compared to the control group (P<0.05); however, there were no differences between unilateral and bilateral training groups. Both training groups had greater increases in LTM of the upper- and whole-body compared to the control group. We conclude that the BLD is apparent for some exercises (i.e., the leg press and lat pull-down) but not others (i.e., knee extension). Bilateral training reduces the BLD; whereas unilateral training has minimal effect on the BLD. Springer-Verlag, 2006 Old nationallicence Bilateral index nationallicence Muscle nationallicence Female nationallicence Janzen Cora College of Kinesiology, University of Saskatchewan, 87 Campus Dr, S7N 5B2, Saskatoon, SK, Canada aut Chilibeck Philip College of Kinesiology, University of Saskatchewan, 87 Campus Dr, S7N 5B2, Saskatoon, SK, Canada aut Davison K. College of Kinesiology, University of Saskatchewan, 87 Campus Dr, S7N 5B2, Saskatoon, SK, Canada aut European Journal of Applied Physiology Springer-Verlag 97/3(2006-06-01), 253-260 1439-6319 97:3<253 2006 97 421 https://doi.org/10.1007/s00421-006-0165-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00421-006-0165-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Janzen Cora College of Kinesiology, University of Saskatchewan, 87 Campus Dr, S7N 5B2, Saskatoon, SK, Canada aut NATIONALLICENCE 700 1- Chilibeck Philip College of Kinesiology, University of Saskatchewan, 87 Campus Dr, S7N 5B2, Saskatoon, SK, Canada aut NATIONALLICENCE 700 1- Davison K. College of Kinesiology, University of Saskatchewan, 87 Campus Dr, S7N 5B2, Saskatoon, SK, Canada aut NATIONALLICENCE 773 0- European Journal of Applied Physiology Springer-Verlag 97/3(2006-06-01), 253-260 1439-6319 97:3<253 2006 97 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer