The Effect of Physical Activity and Inactivity on Aerobic Power in Older Men (A Longitudinal Study)

Kasch, Fred W.; Boyer, John L.; Camp, Steven P. Van; Verity, Larry; Wallace, Janet P.

doi:10.1080/00913847.1990.11710022

Cited by 64 publications

(26 citation statements)

References 13 publications

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“…The exercise only group maintained their weight loss during the second year. The longitudinal research published by Kasch and associates 41 support the effect of habitual physical activity on weight control. They reported that the 25 y longitudinal weight loss of physically active men was 3.4 kg (70.14 kgay), while their sample of inactive men gained 3.2 kg (0.13 kgay).…”

Section: Discussionmentioning

confidence: 98%

Determining the amount of physical activity needed for long-term weight control

et al. 2001

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OBJECTIVE:To evaluate prospectively the in¯uence of habitual physical activity on body weight of men and women and to develop a model that de®nes the role of physical activity on longitudinal weight change. DESIGN AND SETTING: Occupational cohort study conducted for a mean of 5.5 y. SUBJECTS: A total of 496 (341 male and 155 female) NASAaJohnson Space Center employees who completed the 3 month education component of the employee health-related ®tness program and remained involved for a minimum of 2 y. MEASUREMENTS: Body weights were measured at baseline (T1) and follow-up (T2), and habitual physical activity was obtained from the mean of multiple ratings of the 11-point (0 ± 10) NASA Activity Scale (NAS) recorded quarterly between T1 and T2. Other measures included age, gender, VO 2 max obtained from maximal treadmill testing, body mass index (BMI), and body fat percentage. RESULTS: Multiple regression demonstrated that mean NAS, T1 weight, aging and gender all in¯uence long-term T2 weight. T1 age was signi®cant for the men only. Independently, each increase in mean NAS signi®cantly (P`0.01) reduced T2 weight in men (b 7 0.91 kg; 95% CI : 7 1.4 to 7 0.42 kg) and women (b 7 2.14 kg; 95% CI : 7 2.93 to 7 1.35 kg). Mean NAS had a greater effect on T2 weight as T1 weight increased, and the relationship was dose-dependent. CONCLUSIONS: Habitual physical activity is a signi®cant source of long-term weight change. The use of self-reported activity level is helpful in predicting long-term weight changes and may be used by health care professionals when counseling patients about the value of physical activity for weight control.

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Section: Discussionmentioning

confidence: 98%

Determining the amount of physical activity needed for long-term weight control

et al. 2001

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“…O 2 peak can be improved with exercise training of sufficient duration, frequency, and intensity (15,17,18,34,42,43). The increase in V…”

Section: Discussionmentioning

confidence: 99%

Cardiorespiratory adaptations induced by aerobic training in middle-aged men: the importance of a decrease in sympathetic stimulation for the contribution of dynamic exercise tachycardia

Chacon-Mikahil

Forti²,

Catai

et al. 1998

Braz J Med Biol Res

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We investigated the effects of aerobic training on the efferent autonomic control of heart rate (HR) during dynamic exercise in middleaged men, eight of whom underwent exercise training (T) while the other seven continued their sedentary (S) life style. The training was conducted over 10 months (three 1-h/sessions/week on a field track at 70-85% of the peak HR). The contribution of sympathetic and parasympathetic exercise tachycardia was determined in terms of differences in the time constant effects on the HR response obtained using a discontinuous protocol (4-min tests at 25, 50, 100 and 125 watts on a cycle ergometer), and a continuous protocol (25 watts/min until exhaustion) allowed the quantification of the parameters (anaerobic threshold, V . O 2 AT; peak O 2 uptake, V . O 2 peak; power peak) that reflect oxygen transport. The results obtained for the S and the T groups were: 1) a smaller resting HR in T (66 beats/min) when compared to S (84 beats/min); 2) during exercise, a small increase in the fast tachycardia (∆0-10 s) related to vagal withdrawal (P<0.05, only at 25 watts) was observed in T at all powers; at middle and higher powers a significant decrease (P<0.05 at 50, 100 and 125 watts) in the slow tachycardia (∆1-4 min) related to a sympathetic-dependent mechanism was observed in T; 3) the V. O 2 AT (S = 1.06 and T = 1.33 l/min) and V . O 2 peak (S = 1.97 and T = 2.47 l/min) were higher in T (P<0.05). These results demonstrate that aerobic training can induce significant physiological adaptations in middle-aged men, mainly expressed as a decrease in the sympathetic effects on heart rate associated with an increase in oxygen transport during dynamic exercise.

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“…Even so, variation in aerobic capacity is large enough that the range in older adults overlaps that of younger adults (55,62,72). Absolute rates of decline are higher in sedentary adults than active adults (23,37,57). A recent study estimated that exercising adults lose 0.25 mUkg/min in aerobic capacity each year, which is one-third the yearly loss rate of 0.711mVkg/min for nonexercisers (57).…”

Section: Age-related Declinementioning

confidence: 99%

“…Much attention has been paid in gerontology to the decline in aerobic capacity with age (13,20,37,57,83). Between the ages of 30 and 80, about 50% of aerobic capacity is lost.…”

Section: Age-related Declinementioning

confidence: 99%

Effects Of Physical Activity On Health Status In Older Adults II: Intervention Studies

Buchner¹

1992

Annual Review of Public Health

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The Effect of Physical Activity and Inactivity on Aerobic Power in Older Men (A Longitudinal Study)

Cited by 64 publications

References 13 publications

Determining the amount of physical activity needed for long-term weight control

Determining the amount of physical activity needed for long-term weight control

Cardiorespiratory adaptations induced by aerobic training in middle-aged men: the importance of a decrease in sympathetic stimulation for the contribution of dynamic exercise tachycardia

Effects Of Physical Activity On Health Status In Older Adults II: Intervention Studies

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