PMID- 26423425 OWN - NLM STAT- MEDLINE DCOM- 20160517 LR - 20220408 IS - 1574-4647 (Electronic) IS - 0161-9152 (Print) IS - 0161-9152 (Linking) VI - 37 IP - 5 DP - 2015 Oct TI - Effect of resistance training with different frequencies and detraining on muscular strength and oxidative stress biomarkers in older women. PG - 104 LID - 10.1007/s11357-015-9841-6 [doi] LID - 104 AB - The aim of this study was to compare the effect of resistance training (RT) performed with different frequencies followed by a detraining period on muscular strength and oxidative stress (OS) biomarkers in older women. Twenty-seven physically independent women (68.8 +/- 4.8 years, 69.1 +/- 14.3 kg, 156.0 +/- 6.5 cm, and 28.3 +/- 4.9 to kg.m(-2)) were randomly assigned to perform a RT program for 2 or 3 days per week (G2X = 13 vs. G3X = 14) for 12 weeks followed by 12 weeks of detraining period. One repetition maximum (1RM) tests were used as measures of muscular strength (three exercises, three attempts for each exercise, 3-5 min of rest between attempts, and 5 min of rest between exercises). Advanced oxidized protein products (AOPP) and total radical-trapping antioxidant parameter (TRAP) were used as oxidative stress indicators. Both groups increased muscular strength after 12 weeks of training (P < 0.05) in chest press (G2X = +11.9 % vs. G3X = +27.5 %, P < 0.05), knee extension (G2X = +18.4 % vs. G3X = +16.7 %, P > 0.05), and preacher curl (G2X = +37.6 % vs. G3X = +36.7 %, P > 0.05). On the other hand, 12 weeks of detraining were not sufficient to eliminate the major effects produced by RT on muscular strength, although a significant decrease (P < 0.05) has been observed for chest press (G3X = -9.1 % vs. G2X = -10.2 %, P > 0.05), knee extension (G2X = -14.9 % vs. G3X = -12.1 %, P > 0.05), and preacher curl (G2X = -20.5 % vs. G3X = -17.4 %, P > 0.05). Pre- to post-training, both groups showed significant (P < 0.05) increases in TRAP (G2X = +6.9 % vs. G3X = +15.1 %) with no statistical significant difference between the groups (P > 0.05), and the scores remained elevated compared to pre-training after 12 weeks of detraining. AOPP was not changed by RT or detraining (P > 0.05). The results suggest that a 12-week RT program with a frequency of 2 days per week may be sufficient to improve muscular strength and OS in older women and detraining for 12 weeks does not completely reverse the changes induced by RT. FAU - Padilha, Camila S AU - Padilha CS AD - Metabolism, Nutrition, and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, PR, Brazil. camilapersonal@yahoo.com.br. AD - , 908, Xavier da Silva, Ibipora, PR, Brazil, 86200-000. camilapersonal@yahoo.com.br. FAU - Ribeiro, Alex S AU - Ribeiro AS AD - Metabolism, Nutrition, and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, PR, Brazil. FAU - Fleck, Steven J AU - Fleck SJ AD - Department of Kinesiology, University of Wisconsin-Eau Claire, Eau Claire, WI, USA. FAU - Nascimento, Matheus A AU - Nascimento MA AD - Metabolism, Nutrition, and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, PR, Brazil. AD - Parana State University, UNESPAR, Paranavai Campus, Paranavai, PR, Brazil. FAU - Pina, Fabio L C AU - Pina FL AD - Metabolism, Nutrition, and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, PR, Brazil. FAU - Okino, Alessandra Miyuki AU - Okino AM AD - Department of Pathology, Clinical and Toxicological Analysis. Center of Health Sciences, University Hospital, Londrina State University, Londrina, Brazil. FAU - Venturini, Danielle AU - Venturini D AD - Department of Pathology, Clinical and Toxicological Analysis. Center of Health Sciences, University Hospital, Londrina State University, Londrina, Brazil. FAU - Barbosa, Decio S AU - Barbosa DS AD - Department of Pathology, Clinical and Toxicological Analysis. Center of Health Sciences, University Hospital, Londrina State University, Londrina, Brazil. FAU - Mayhew, Jerry L AU - Mayhew JL AD - Exercise Science Department, Truman State University, Kirksville, MO, USA. FAU - Cyrino, Edilson S AU - Cyrino ES AD - Metabolism, Nutrition, and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, PR, Brazil. LA - eng PT - Journal Article PT - Randomized Controlled Trial DEP - 20150930 PL - Netherlands TA - Age (Dordr) JT - Age (Dordrecht, Netherlands) JID - 101250497 RN - 0 (Advanced Oxidation Protein Products) RN - 0 (Antioxidants) RN - 0 (Biomarkers) SB - IM MH - Advanced Oxidation Protein Products/*metabolism MH - Aged MH - Aging/*physiology MH - Antioxidants/metabolism MH - Biomarkers/*metabolism MH - Female MH - Follow-Up Studies MH - Humans MH - Muscle Strength/*physiology MH - Muscle, Skeletal/*physiology MH - *Oxidative Stress MH - Resistance Training/*methods PMC - PMC5005843 OTO - NOTNLM OT - AOPP OT - Aging OT - Strength training OT - TRAP EDAT- 2015/10/02 06:00 MHDA- 2016/05/18 06:00 PMCR- 2016/10/01 CRDT- 2015/10/02 06:00 PHST- 2015/07/03 00:00 [received] PHST- 2015/09/21 00:00 [accepted] PHST- 2015/10/02 06:00 [entrez] PHST- 2015/10/02 06:00 [pubmed] PHST- 2016/05/18 06:00 [medline] PHST- 2016/10/01 00:00 [pmc-release] AID - 10.1007/s11357-015-9841-6 [pii] AID - 9841 [pii] AID - 10.1007/s11357-015-9841-6 [doi] PST - ppublish SO - Age (Dordr). 2015 Oct;37(5):104. doi: 10.1007/s11357-015-9841-6. Epub 2015 Sep 30.