Cardiorespiratory Fitness Case Study
Cardiorespiratory fitness:
Cardiorespiratory fitness (endurance), a component of physical fitness is the ability of the circulatory and respiratory systems to supply oxygen during sustained physical activity. Usually expressed as measured or estimated maximal oxygen uptake (VO2 max). Maximal oxygen uptake (VO2 max ) is the body’s capacity to transport and use oxygen during a maximal exertion involving dynamic contraction of large muscle groups, such as during running or cycling. It is also known as maximal aerobic power and cardiorespiratory endurance capacity (3).
Cardiorespiratory fitness is an objective indicator of overall cardiovascular health. Studies reveal significant relationship between increased fitness and decreased cardiovascular …show more content…
They trained all subjects 3 days per week at 75 % of maximum heart rate and the subjects differed in training durations with 5min, 15 min and 25 mins of durations each session. The results indicated that at least 15 min and preferably 25 min of exercise each session with above mentioned intensity and duration is necessary to improve cardiorespiratory fitness.(45) Study by Milesis et al studied the effect of training at durations of 15, 30 and 45 minutes and showed that improvement in VO2 max is proportional to the duration of each training session.(47)
Gossard et al studied the effect of home based exercise training on VO2 max in middle aged men. The training was performed 5 times per week for 12 weeks. Half of the participants were trained at intensity of 42 to 60 % of VO2 max and the half at 63to 81 % of base line VO2 max. VO2 max increased 8% in patients who trained at lower intensity, 17% in those who trained at higher …show more content…
The threshold of exercise intensity to improve VO2 max may vary depending on fitness level of the individual. Swain and Franklin reviewed clinical trials that measured VO2 max before and after exercise training and found that subjects with mean baseline VO2 max values of 40-51 mL•kg−1•min−1 (∼11-14 METs) seemed to require an intensity of at least 45% oxygen uptake reserve (V˙O2R) to increase VO2 max, but no apparent threshold was found for subjects with mean baseline VO2 max <11 METs), although ∼30%V˙O2R was the lowest intensity studied.
An experimental study by Liang et al examined the effects of six weeks of training on VO2 max using combinations of two intensities (40% and 60% of VO2 max), four durations (15, 30, 45 and 60 min per day) and one frequency (3 days per week). It revealed that aerobic training threshold for young males is obtained with exercise for 60 min per day at 40-60% of the VO2 max, 3 days per week for 6 weeks. Exercise at same intensity for 45 min per week maintains aerobic power and for less than 30 min per day results in
Cardiorespiratory fitness (endurance), a component of physical fitness is the ability of the circulatory and respiratory systems to supply oxygen during sustained physical activity. Usually expressed as measured or estimated maximal oxygen uptake (VO2 max). Maximal oxygen uptake (VO2 max ) is the body’s capacity to transport and use oxygen during a maximal exertion involving dynamic contraction of large muscle groups, such as during running or cycling. It is also known as maximal aerobic power and cardiorespiratory endurance capacity (3).
Cardiorespiratory fitness is an objective indicator of overall cardiovascular health. Studies reveal significant relationship between increased fitness and decreased cardiovascular …show more content…
They trained all subjects 3 days per week at 75 % of maximum heart rate and the subjects differed in training durations with 5min, 15 min and 25 mins of durations each session. The results indicated that at least 15 min and preferably 25 min of exercise each session with above mentioned intensity and duration is necessary to improve cardiorespiratory fitness.(45) Study by Milesis et al studied the effect of training at durations of 15, 30 and 45 minutes and showed that improvement in VO2 max is proportional to the duration of each training session.(47)
Gossard et al studied the effect of home based exercise training on VO2 max in middle aged men. The training was performed 5 times per week for 12 weeks. Half of the participants were trained at intensity of 42 to 60 % of VO2 max and the half at 63to 81 % of base line VO2 max. VO2 max increased 8% in patients who trained at lower intensity, 17% in those who trained at higher …show more content…
The threshold of exercise intensity to improve VO2 max may vary depending on fitness level of the individual. Swain and Franklin reviewed clinical trials that measured VO2 max before and after exercise training and found that subjects with mean baseline VO2 max values of 40-51 mL•kg−1•min−1 (∼11-14 METs) seemed to require an intensity of at least 45% oxygen uptake reserve (V˙O2R) to increase VO2 max, but no apparent threshold was found for subjects with mean baseline VO2 max <11 METs), although ∼30%V˙O2R was the lowest intensity studied.
An experimental study by Liang et al examined the effects of six weeks of training on VO2 max using combinations of two intensities (40% and 60% of VO2 max), four durations (15, 30, 45 and 60 min per day) and one frequency (3 days per week). It revealed that aerobic training threshold for young males is obtained with exercise for 60 min per day at 40-60% of the VO2 max, 3 days per week for 6 weeks. Exercise at same intensity for 45 min per week maintains aerobic power and for less than 30 min per day results in