PMID- 16446692 OWN - NLM STAT- MEDLINE DCOM- 20060522 LR - 20191210 IS - 0022-4707 (Print) IS - 0022-4707 (Linking) VI - 45 IP - 4 DP - 2005 Dec TI - Resistance training in older women: effect on vertical jump and functional performance. PG - 570-5 AB - AIM: Few studies have determined the effects of a heavy resistance training on vertical jump performance in older adults. The purpose of the present study was to evaluate the effects of a 12 week heavy resistance training in vertical jump and functional performance in healthy, inactive, older women. METHODS: Seventeen sedentary older women (aged 53-69 years) were assigned either to a control (C, n=8), or to a heavy resistance training (RT, n=9). The RT group trained knee extensors and flexors at 80% of 1-repetition maximum (1-RM), 3 days per week for 12 weeks. Both groups were evaluated in 1-RM lower body strength, squat jump (SJ) and countermovement jump (CMJ) height, and chair rising time, before and after the training period. RESULTS: After the training period, RT significantly improved (P<0.001) the 1-RM lower body strength, SJ, CMJ height, and chair rising by 68.9%, 24.5%, 21.7%, and 13%, respectively. Significant correlations were observed among the percent (%) change in 1-RM lower body strength and SJ (r=0.849, P<0.001), CMJ height (r=0.797, P<0.001), and chair rising time (r=-0.917, P<0.001). CONCLUSIONS: Muscle power improved after a short-term heavy resistance training, as measured by vertical jump and chair rising performance, in inactive older adults. The gains in muscle strength may contribute to the gains in chair rising time, SJ and CMJ height. FAU - Kalapotharakos, V I AU - Kalapotharakos VI AD - Department of Physical Education and Sport Science, Democritus University of Thrace Komotini, Greece. vasikal@yahoo.com FAU - Tokmakidis, S P AU - Tokmakidis SP FAU - Smilios, I AU - Smilios I FAU - Michalopoulos, M AU - Michalopoulos M FAU - Gliatis, J AU - Gliatis J FAU - Godolias, G AU - Godolias G LA - eng PT - Journal Article PT - Randomized Controlled Trial PL - Italy TA - J Sports Med Phys Fitness JT - The Journal of sports medicine and physical fitness JID - 0376337 SB - IM MH - Age Factors MH - Aged MH - Aging/*physiology MH - Exercise/*physiology MH - Female MH - Humans MH - Knee Joint/physiology MH - Middle Aged MH - Movement/*physiology MH - Muscle Contraction/*physiology MH - Muscle, Skeletal/*physiology MH - Outcome Assessment, Health Care MH - Physical Education and Training/*methods MH - Physical Endurance/*physiology MH - *Physical Fitness EDAT- 2006/02/01 09:00 MHDA- 2006/05/23 09:00 CRDT- 2006/02/01 09:00 PHST- 2006/02/01 09:00 [pubmed] PHST- 2006/05/23 09:00 [medline] PHST- 2006/02/01 09:00 [entrez] PST - ppublish SO - J Sports Med Phys Fitness. 2005 Dec;45(4):570-5.