Efficiency of twice weekly concurrent training in trained elderly men.
This study compared the effects of different weekly training frequencies on the cardiovascular and neuromuscular adaptations induced by concurrent training in previously trained elderly. After 20weeks of combined strength and endurance training, twenty-four healthy elderly men (65±4 years) were randomly placed into two frequency training groups: strength and endurance training performed twice a week (SE2, n=12); or, strength and endurance training performed three times per week (SE3, n=12). The interventions lasted 10 weeks and each group performed identical exercise intensity and volume per session. Before and after the exercise training, one maximum repetition test (1RM), isometric peak torque (PT), maximal surface electromyographic activity (EMG), as well as muscle thickness (MT) were examined. Additionally, peak oxygen uptake (VO(2peak)), maximum aerobic workload (W(max)), first and second ventilatory thresholds (VT1 and VT2) were evaluated. There were significant increases in upper and lower-body 1RM, MT, VO(2peak), VT1 and VT2, with no differences between groups. There were no changes after training in maximal EMG and isometric peak torque. W(max) was improved only in SE3. After 10 weeks of training, twice weekly combined strength and endurance training leads to similar neuromuscular and cardiovascular adaptations as three times per week, demonstrating the efficiency of lower frequency of concurrent training in previously trained elderly men.
Exercise Pathophysiology Research Laboratory and Postgraduate Program in Cardiovascular Sciences, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil; Exercise Research Laboratory, Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil. Electronic address: rod.ferrari@terra.com.br.
Rodrigo
R
Ferrari
Luiz Fernando Martins
LF
Kruel
Eduardo Lusa
EL
Cadore
Cristine Lima
CL
Alberton
Mikel
M
Izquierdo
Matheus
M
Conceição
Ronei Silveira
RS
Pinto
Régis
R
Radaelli
Eurico
E
Wilhelm
Martim
M
Bottaro
Jorge Pinto
JP
Ribeiro
Daniel
D
Umpierre
D000368:Aged; D000375:Aging / Q000473:pathology / Q000502:physiology*; D004576:Electromyography; D005080:Exercise Test; D005081:Exercise Therapy / Q000379:methods*; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology; D008297:Male; D008875:Middle Aged; D053580:Muscle Strength / Q000502:physiology; D018482:Muscle, Skeletal / Q000033:anatomy & histology / Q000502:physiology; D010101:Oxygen Consumption / Q000502:physiology; D010807:Physical Endurance / Q000502:physiology; D055070:Resistance Training / Q000379:methods; D013997:Time Factors
Aging; Dose–response; Endurance; Exercise volume; Strength