It is the aim of our study to compare the effects of 6 and/or 2 years of either HIT (carried out at correctly assessed 85-95% of maximal heart rate), pyramid, or continuous endurance training, on changes of physical exercise capacity in cardiac patients.
The three exercise arms (isocaloric) are composed as follows: Endurance training: 31 min at 65-75% HRmax, making it a total of 25min; HIT: 4x4min intervals at 85-95% HRmax divided by 3x3min of active recovery at 60-70% HRmax, making it a total of 25 min; Pyramid: One pyramid consists of 8 one-minute blocks. Those are grouped starting with one block of 70-75% HRmax, followed by one block at 75-80% HRmax and another one at 80-85% HRmax. The top of the pyramid are 2 blocks of 85-90% HRmax. Intensity is lowered afterwards with one block of 80-85% HRmax, followed by one block at 75-80% HRmax and last one at 70-75% HRmax. Two more pyramids follow, each divided by 2min of active recovery at 65-70% HRmax, making it a total of 28min. All protocols are initiated by 5min of warm-up and end with 5min of cool-down, both at 60-70% HRmax. Primary Outcome: Individual maximum power output in watt (Pmax). Secondary Outcome: Change of power output in watt at lactate tresholds at 2 and 4mmol/l.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
52
Endurance training with constant work load 31min at 65-75% Hrmax
One pyramid consists of 8 one-minute blocks. Those are grouped starting with one block of 70-75% HRmax, followed by one block at 75-80% HRmax and another one at 80-85% HRmax. The top of the pyramid are 2 blocks of 85-90% HRmax. Intensity is lowered afterwards with one block of 80-85% HRmax, followed by one block at 75-80% HRmax and last one at 70-75% HRmax. Two more pyramids follow, each divided by 2min of active recovery at 65-70% HRmax, making it a total of 28min.
HIT: 4x4 min intervals at85-95% HRmax divided by 3x3min of active recovery at 60-70% HRmax, making it a total of 25min.
Department of Sports Medicine, Prevention and Rehabilitation Paracelsus Medical University
Salzburg, Austria
Physical work capacity (PWC)
PWC will be measured by graded exercise testing on cycle ergometer.
Time frame: 6 weeks or 36 weeks
Heart rate
Heart rate will be measured by graded exercise testing on cycle ergometer.
Time frame: 6 weeks or 36 weeks
Blood pressure
Blood pressure will be measured by graded exercise testing on cycle ergometer.
Time frame: 6 weeks or 36 weeks
Lactate Thresholds
Lactate thresholds will be measured by graded exercise testing on cycle ergometer.
Time frame: 6 weeks or 36 weeks
Metabolical and cellular blood parameter
Blood will be taken before and after intervention
Time frame: 6 weeks or 36 weeks
BMI
BMI will be taken before and after intervention
Time frame: 6 weeks or 36 weeks
Gene expression
Gene expression will be taken before and after intervention
Time frame: 6 weeks or 36 weeks
Quality of Life
Quality of Life will be taken before and after intervention
Time frame: 6 weeks or 36 weeks
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