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Exercise Training Improves Overall Physical Fitness and Quality of Life: Baseline Analysis

Exercise Training Improves Overall Physical Fitness and Quality of Life: Baseline AnalysisAt baseline, the social QOL of the AT subjects was significantly greater than that of COMT subjects (Table 1). No significant difference was found between the groups for any other baseline measure (Table 1). generic wellbutrin
Effects of Exercise Training on Vo2peak and Distance Walked in 6 min
Both AT and COMT resulted in a similar increase in peak exercise ventilation, oxygen pulse, V02peak, and distance walked in 6 min (Fig 2). No significant change in peak heart rate was found after training (pretraining, 115 ± 19 beats/min, vs posttraining. 119 ± 20 beats/min).

Effects of Exercise Training on Upper- and Lower-Extremity Strength
AT and COMT resulted in a similar increase in leg curl and leg-extension 1RMs (Fig 3). Vertical row, shoulder press, chest press, latissimus dorsi pull down, biceps curl, and triceps push down 1RMs were significantly greater after 8 weeks of COMT and were unchanged with AT (Table 2).  alta white teeth whitening
Effects of Exercise Training on QoL
Both AT and COMT resulted in a similar increase in emotional and global QOL (Table 3). Physical and social QOL were significantly greater after 8-weeks of COMT, and were unchanged with AT (Table 3).
Discussion
The main finding of this investigation was that AT or COMT were equally effective in improving V02peak, distance walked in 6 min, lower-extremity strength, and emotional and global QOL in older women with CAD. A second finding was that upper-extremity strength and physical and social QOL were significantly greater after 8 weeks of COMT, and were unchanged with AT.
Improvement in VO2peak With Exercise Training
Few studies have examined the effect that exercise training has on altering V02peak in older women with CAD. Ades et al, and others have found that 12 to 26 weeks of AT resulted in a 5 to 30% increase in V02peak in older women (age range, 53 to 82 years) with CAD. We found that 8 weeks of AT or COMT resulted in a 12% increase in V02peak. This improvement is due to an increase in stroke volume and/or arteriovenous oxygen difference, as the oxygen pulse during peak exercise was significantly higher after training (Fig 2). Ades et al and Kirwin et al found that the heightened V02peak is secondary to an increase in arteriovenous oxygen difference, as 12 to 26 weeks of AT did not alter submaximal or maximal stroke volume or cardiac output in older women with CAD. Thus, not unlike that found in healthy older women, the increase in V02peak associated with exercise training in older women with CAD appears to be due to an increase in peak arteriovenous oxygen difference.
Fig1
Figure 1. Vo2peak in healthy older sedentary and active women and older women with CAD. Dashed line indicates oxygen uptake required for independent living.
Fig2
Figure 2. Effects of exercise training on Vo2peak, peak oxygen pulse (O2 Pulse peak), ventilation (VEpeak), and distance walked in 6 min (6 MWD). *p < 0.05 vs before training (Pre). Post = after exercise training.
Fig3
Figure 3. Effects of exercise training on leg curl and leg extension 1RM. *p < 0.05 vs before exercise training. See Figure 2 legend for expansion of abbreviations.

Table 1—Subject Characteristics

Variables AT COMT
Age, yr 70 ± 6 71 ± 7
Height, m 1.6 ± 0.6 1.6 ± 0.6
Weight, kg 74 ± 12 73 ± 8
Cardiorespiratory measures during peak treadmill exercise
Peak ventilation, L/min 29 ± 7 33 ± 7
Peak heart rate, beats/min 113 ± 22 117 ± 17
Peak oxygen pulse, mL/beat 10 ± 3 10 ± 2
Vo2 peak, L/min 15 ± 3 16 ± 3
Six-minute walk distance, m 418 ± 74 438 ± 110
Maximal strength (1RM)
Leg extension, kg 30 ± 9 35 ± 7
Leg curl, kg 21 ± 7 26 ± 9
Vertical row, kg 36 ± 10 39 ± 10
Shoulder press, kg 28 ± 9 28 ± 7
Chest press, kg 32 ± 10 33 ± 9
Latissimus dorsi pull down, kg 37 ± 6 38 ± 10
Biceps curl, kg 18 ± 3 18 ± 3
Triceps push down, kg 20 ± 5 21 ± 5
QOL
Emotional 5.4 ± 1.7 5.0 ± 1.1
Physical 5.4 ± 1.6 5.0 ± 0.9
Social 5.5 ± 1.6* 4.7 ± 1.1
Global 5.4 ± 1.6 4.9 ± 1.0

Table 2—Effects of Exercise Training on Upper-Extremity Maximal Strength

Variables/Group Before After
Vertical row, kg
AT 36 ± 10 37 ± 12
COMT 39 ± 10 45 ± 10* t
Shoulder press, kg AT 28 ± 9 29 ± 10
COMT 28 ± 7 35 ± 10* t
Chest press, kg AT 32 ± 10 32 ± 10
COMT 33 ± 9 40 ± 8* t
Latissimus dorsi pull down, kg
AT 37 ± 6 35 ± 9
COMT 38 ± 10 44 ± 9* t
Biceps curl, kg AT 18 ± 3 19 ± 4
COMT 18 ± 3 22 ± 4* t
Triceps push down, kg AT 20 ± 5 21 ± 4
COMT 21 ± 5 27 ± 5*t

Table 3—Effects of AT or COMT on Emotional, Physical, Social, and Global QOL

Before After Before After
Variables AT AT COMT COMT
Emotional QOL* 5.4 ± 1.7 5.9 ± 0.9 5.0 ± 1.1 6.0 ± 0.7
Physical QOL 5.4 ± 1.6 5.8 ± 1.1 5.0 ± 0.9 6.3 ± 0.6t
Social QOL 5.5 ± 1.6 6.1 ± 1.2 4.7 ± 1.1 6.4 ± 0.4t
Global QOL* 5.4 ± 1.6 5.9 ± 1.0 4.9 ± 1.0 6.2 ± 0.5
This entry was posted in Coronary Artery Disease and tagged aerobic training, coronary artery disease, strength training.
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