Physiologic Responses of Men 49 to 65 Years of Age to Endurance Training*

Pollock, Michael L.; Dawson, Glenn A.; Miller, Henry S.; Ward, Ann; Cooper, Daniel E.; Headley, W. Scot; Linnerud, A. C.; Nomeir, M.‐M.

doi:10.1111/j.1532-5415.1976.tb04279.x

Cited by 42 publications

(11 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…When these protocols are adhered to strictly, these continuous-scale measures are reproducible and valid. 9,10 In our view, the advantages of these measures are that they are well-established markers of physical conditioning that are frequently reported in the literature. Functional limitations have been defined as the gap between a person's capabilities and the demands of the environment.…”

mentioning

confidence: 99%

“…For impairment in our study, we measured maximal voluntary performance for aerobic capacity and maximal voluntary muscle torque. Aerobic capacity is reported as peak oxygen consumption, 9 and muscle torque is reported as maximal voluntary muscle torque for the quadriceps femoris muscles. 10 Protocols for maximal voluntary performance measures were developed in an effort to isolate the variable of interest-aerobic capacity or maximal voluntary force-and to minimize the influence of other factors.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Maximal Voluntary and Functional Performance Needed for Independence in Adults Aged 65 to 97 Years

2003

View full text Add to dashboard Cite

Background and Purpose. Age-related loss of muscle mass and cardiovascular endurance can lead to impairments in muscle force production and cardiac function that, in turn, limit performance in activities essential to everyday living. The purposes of this study were: (1) to identify the “breakpoint” or threshold of maximal voluntary performance and performance in ordinary daily function (2) to evaluate the predictive validity of the threshold to identify the ability independently without self-reported functional limitation. Subjects and Methods. Men and women (N=192; mean age=76 years, SD=7 were recruited from single-family community dwellings or retiremet communities with multiple levels of care. Physical function was measured with the Continuous-Scale Physical Functional Performance Test (CS-PFP). Maximal voluntary performance measures included peak oxygen consumption (V̇) and isokinetic knee extensor torque (KET). Segmented linear regression models of the CS-PFP on the physical performance measures were used to determine the threshold values and their confidence intervals. A logistic regression model was used to evaluate the ability of the CS-PFP scores to identify those living independently and to further illustrate the concepts of threshold and physical reserve. Results. Threshold values identified for V̇O2peak (20 mL·kg−1·min−1) and KET (2.5 N·m/[kgom-1]) were associated with an average of CS-PFP scoe of 57 units. The threshold accurately predicted individuals reporting functional limitations. Discussion and Conclusion. The thresholds provide a mechanism for easily estimating an individual's physical reserve, predicting dependency in living status, and providing unbiased guidance for intervention in late-life independence.

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

Maximal Voluntary and Functional Performance Needed for Independence in Adults Aged 65 to 97 Years

2003

View full text Add to dashboard Cite

show abstract

“…[3][4][5][6] The age-associated decline in maximal oxygen consumption can be attenuated by habitual aerobic exercise, although the mechanism is unclear. [7][8][9][10][11] Although it has been shown that exercise training can augment both cardiac output and the AV oxygen difference in younger subjects, 12,13 these components have not been measured in older subjects before and after exercise intervention.…”

mentioning

confidence: 99%

Aerobic Exercise Training Can Reverse Age-Related Peripheral Circulatory Changes in Healthy Older Men

et al. 1999

View full text Add to dashboard Cite

Background-The age-related decline in maximal oxygen consumption is attenuated by habitual aerobic exercise.However, the relative effects of training on central and peripheral responses to exercise in older subjects are not known. The present study assessed the contribution of central and peripheral responses to the age-associated decline in peak oxygen consumption and compared the effect of exercise training in healthy older and younger subjects. Methods and Results-Ten older and 13 younger men underwent invasive measurement of central and peripheral cardiovascular responses during an upright, staged cycle exercise test before and after a 3-month period of exercise training with cycle ergometry. At baseline, cardiac output and AV oxygen difference during exercise were significantly lower in older subjects. With training, the older and younger groups increased maximal oxygen consumption by 17.8% and 20.2%, respectively. Peak cardiac output was unchanged in both groups. Systemic AV oxygen difference increased 14.4% in the older group and 14.3% in the younger group and accounted for changes in peak oxygen consumption. Peak leg blood flow increased by 50% in older subjects, whereas the younger group showed no significant change. There was no change in peak leg oxygen extraction in the older group, but in the younger group, leg AV oxygen difference increased by 15.4%. Conclusions-These findings suggest that the age-related decline in maximal oxygen consumption results from a reversible deconditioning effect on the distribution of cardiac output to exercising muscle and an age-related reduction in cardiac output reserve.

show abstract

“…Aging is a natural process characterized by a reduction of the physiological functions and responses, particularly from the third decade of life onwards, when a progressive decline of the functional capacity takes place, the speed of which depends on the individual's genetic factors, health conditions, and lifestyle 1 . Th ese changes caused by aging increase the incidence of cardiovascular disease in both men and women.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, women over 50 suff er a decrease in the parasympathetic modulation, and these diff erences tend to lessen with age [11][12][13][14] . Thus, although aging manifests itself in the responses of functional variables, exercise can diminish the consequences of a slower physiological rhythm 1 . Regular exercise, especially aerobic exercise or aerobic physical training (APT), can change the control of the ANS over the CVS, raising parasympathetic activity with or without the reduction of sympathetic activity.…”

Section: Introductionmentioning

confidence: 99%

Respostas cardiovasculares a mudança postural e capacidade aeróbia em homens e mulheres de meia-idade antes e após treinamento físico aeróbio

St¹,

Fs²,

Va³

et al. 2008

Rev. bras. fisioter.

View full text Add to dashboard Cite

Physiologic Responses of Men 49 to 65 Years of Age to Endurance Training*

Cited by 42 publications

References 32 publications

Maximal Voluntary and Functional Performance Needed for Independence in Adults Aged 65 to 97 Years

Maximal Voluntary and Functional Performance Needed for Independence in Adults Aged 65 to 97 Years

Aerobic Exercise Training Can Reverse Age-Related Peripheral Circulatory Changes in Healthy Older Men

Respostas cardiovasculares a mudança postural e capacidade aeróbia em homens e mulheres de meia-idade antes e após treinamento físico aeróbio

Contact Info

Product

Resources

About