Relationship of Heart Rate and Oxygen Uptake Kinetics during Deep Water Running in the Adult Population—Ages 50 to 70 Years

1998 ◽  
Vol 6 (3) ◽  
pp. 248-255 ◽  
Author(s):  
Stanley P. Brown ◽  
Joel C. Jordan ◽  
Linda F. Chitwood ◽  
Kim R. Beason ◽  
John G. Alvarez ◽  
...  
Keyword(s):  
Older Adults ◽  
Heart Rate ◽  
Oxygen Uptake ◽  
Deep Water ◽  
Adult Population ◽  
Linear Regression Analysis ◽  
Regression Equations ◽  
Physiological Variables ◽  
The Relationship ◽  
Deep Water Running

This study was performed to investigate the relationship between heart rate (HR) as a percentage of peak HR and oxygen uptake (V̇O2) as a percentage of peak V̇O2 in older adults while performing deep water running (DWR). Twenty-three (14 male and 9 female) apparently healthy older adults, age 50 to 70 years, volunteered. Deep water running to V̇O2peak was performed in 3-min stages at leg speeds controlled by a metronome beginning at 60 strides per minute and increasing 12 strides per minute each additional stage. Oxygen uptake and HR were continuously monitored by open-circuit spirometry and radiotelemetry, respectively. Simple linear regression analysis was used to establish the relationship between the physiological variables. The relationship between %V̇O2peak and %HRpeak was statistically significant, with the male (%V̇O2peak = 1.5301 [%HRpeak] − 54.4932 [r = .96, SEE = 6.0%]) and female (%V̇O2peak = 1.5904 [%HRpeak] - 62.3935 [r = .91, SEE = 6.9%]) regression equations being significantly different (p < .05). The regression equations of older adults and those for college-aged males (%VO2peak = 1.4634 [%HRpeak] − 49.619) and females (%V̇O2peak = 1.6649 [%HRpeak] − 67.862) were not significantly different.

Physiological Correlates with Perceived Exertion during Deep Water Running

1996 ◽  
Vol 83 (1) ◽  
pp. 155-162 ◽  
Author(s):  
Stanley P. Brown ◽  
Linda F. Chitwood ◽  
Kim R. Beason ◽  
Deena R. McLemore
Keyword(s):  
Deep Water ◽  
Perceived Exertion ◽  
Pulmonary Ventilation ◽  
Carbon Dioxide Production ◽  
Important Variable ◽  
Open Circuit ◽  
Forward Solution ◽  
Physiological Variables ◽  
The Relationship ◽  
Deep Water Running

The purpose of this study was to investigate the relationship between perceived exertion and physiological variables during deep water running. Deep water running to VO2 peak was performed in 3-min. stages at leg speeds controlled by a metronome. VO2 and heart rate were continuously monitored by open circuit spirometry and radiotelemetry. Perceived exertion was measured using Borg's 6- to 20-point scale. Multiple regression analysis with a forward solution was used to establish the relations of the measures of perceived exertion with the measures of oxygen uptake, carbon dioxide production, pulmonary ventilation, respiratory exchange ratio, and respiratory rate. %VO2 max was the most important variable predicting perceived exertion. Men and women ( ns = 12) reported using different sensory cues to perceive exertion during deep water running.

RELATIONSHIP BETWEEN RELATIVE HEART RATE AND VO2 DURING DEEP WATER RUNNING IN OLDER ADULTS

1998 ◽  
Vol 30 (Supplement) ◽  
pp. 162
Author(s):  
S. P. Brown ◽  
J. C. Jordan ◽  
L. F. Chitwood ◽  
K. R. Beason ◽  
J. G. Alvarez ◽  
...  
Keyword(s):  
Older Adults ◽  
Heart Rate ◽  
Deep Water ◽  
Deep Water Running

Older Women’s Cardiovascular Responses to Deep-Water Running

2006 ◽  
Vol 14 (1) ◽  
pp. 29-40 ◽  
Author(s):  
Gi Broman ◽  
Miguel Quintana ◽  
Margareta Engardt ◽  
Lennart Gullstrand ◽  
Eva Jansson ◽  
...  
Keyword(s):  
Heart Rate ◽  
Oxygen Uptake ◽  
Deep Water ◽  
Exercise Test ◽  
Perceived Exertion ◽  
Maximal Exercise ◽  
Elderly Women ◽  
Treadmill Running ◽  
Maximal Exercise Test ◽  
Deep Water Running

The aim of the study was to examine submaximal and maximal physiological responses and perceived exertion during deep-water running with a vest compared with the responses during treadmill running in healthy elderly women. Eleven healthy women 70 ± 2 years old participated. On two different occasions they performed a graded maximal exercise test on a treadmill on land and a graded maximal exercise test in water wearing a vest. At maximal work the oxygen uptake was 29% lower (p < .05), the heart rate was 8% lower (p < .05), and the ventilation was 16% lower (p < .05) during deep-water running than during treadmill running. During submaximal absolute work the heart rate was higher during deep-water running than during treadmill running for the elderly women. The participants had lower maximal oxygen uptake, heart rate, ventilation, respiratory-exchange ratio, and rate of perceived exertion during maximal deep-water running with a vest than during maximal treadmill running. These responses were, however, higher during submaximal deep-water running than during treadmill running.

Maximal Oxygen Uptake and Daily Physical Activity in 7- to 12-Year-Old Boys

1993 ◽  
Vol 5 (4) ◽  
pp. 357-366 ◽  
Author(s):  
Hazzaa M. Al-Hazzaa ◽  
Mohammed A. Sulaiman
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Oxygen Uptake ◽  
Maximal Oxygen Uptake ◽  
Open Circuit ◽  
Daily Physical Activity ◽  
Activity Level ◽  
Activity Levels ◽  
School Time ◽  
The Relationship

The present study examined the relationship between maximal oxygen uptake (V̇O2max) and daily physical activity in a group of 7- to 12-year-old boys. V̇O2max was assessed through the incremental treadmill test using an open circuit system. Physical activity level was obtained from heart rate telemetry outside of school time for 8 hrs during weekdays and during 40 min of physical education classes. The findings indicated that the absolute value of V̇O2max increased with age, while relative to body weight it remained almost the same across age, with a mean of 48.4 ml · kg−1 · min−1. Moreover, heart rate telemetry showed that the boys spent a limited amount of time on activities that raise the heart rate to a level above 160 bpm (an average of 1.9%). In addition, V̇O2max was found to be significantly related to the percentage of time spent at activity levels at or above a heart rate of 140 bpm, but not with activity levels at or above a heart rate of 160 bpm.

scholarly journals Association between objectively measured walking steps and sleep in community-dwelling older adults: A prospective cohort study

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0243910
Author(s):  
Noriyuki Kimura ◽  
Yasuhiro Aso ◽  
Kenichi Yabuuchi ◽  
Etsuro Matsubara
Keyword(s):  
Older Adults ◽  
Sleep Disturbances ◽  
Linear Regression Analysis ◽  
Community Dwelling ◽  
Sleep Efficiency ◽  
Ageing Society ◽  
Sleep Parameters ◽  
Objectively Measured ◽  
Community Dwelling Older Adults ◽  
The Relationship

Physical inactivity and sleep disturbances are major problems in an ageing society. There is increasing evidence that physical activity is associated with sleep quality. However, the association between daily walking steps and sleep remain unclear. This prospective study examined the relationship between objectively measured daily walking steps and sleep parameters in Japanese community-dwelling older adults. In total, 855 community-dwelling individuals aged 65 and above, with an uninterrupted follow-up from August 2015 to March 2016, were enrolled. The participants wore a wristband sensor for an average of 7.8 days every three months. Multiple linear regression analysis was performed to examine the relationship between daily walking steps and sleep parameters, including the total sleep time, sleep efficiency, time awake after sleep onset (WASO), awakening time count during the night, and naptime. The median (interquartile range, IQR) age of the participants was 73 (69–78) years, with 317 (37.1%) men and 538 (62.9%) women. The median (IQR) educational level was 12 (11–12) years, and the median (IQR) Mini-Mental State Examination score was 29 (27–30) points. The number of daily walking steps showed a positive correlation with sleep efficiency and an inverse correlation with WASO, awakening time count, and naptime, after adjusting for covariates and correcting for the false discovery rate (β = 0.098, 95% confidence interval [CI]: 0.034 to 0.162, p = 0.003; β = −0.107, 95% CI: −0.172 to −0.043, p = 0.001; β = −0.105, 95% CI: −0.17 to −0.04, p = 0.002; and β = −0.31, 95% CI: −0.371 to −0.249, p < 0.001, respectively). Our results can help promote walking as an intervention for preventing sleep disturbances in community-dwelling older adults.

Telemetered Heart Rate as a Psychophysiological Correlate of Mother-Child Interaction, by K. Michael Hong, M.D., Douglas M. Bowden, M.D., and Kate L. Kogan, Ph.D

PEDIATRICS ◽  
1979 ◽  
Vol 63 (4) ◽  
pp. 601-601
Keyword(s):  
Heart Rate ◽  
Three Dimensions ◽  
Behavioral Measures ◽  
Transition Analysis ◽  
Physiological Variables ◽  
Cardiac Deceleration ◽  
Behavioral Interaction ◽  
New Findings ◽  
Naturalistic Setting ◽  
The Relationship

Heart rate was telemetered from 6 preschool children during play sessions with their mothers. Their behavioral interaction was simultaneously recorded on videotape and rated on three dimensions of interaction: status (submission- dominance), affect (hostility-warmth), and degree of involvement; 100 specific behaviors were coded in consecutive 4-second epochs. In exploring the relationship between heart rate and the behavioral measures, we applied two kinds of analysis—state analysis and transition analysis. The usefulness of recording heart rate in a naturalistic setting was demonstrated by replicating the finding from more rigidly defined experiments that intense looking at an object is associated with cardiac deceleration. New findings were that submissive status and warm affect of the child and dominant status and warm affect of the mother were associated with low heart rate in the child and that the onset of smiling was associated with cardiac deceleration in most situations. The study demonstrates the feasibility and some of the potential uses of continuously telemetered heart rate for analyzing interactional and physiological variables in a naturalistic setting.

INCREASED INTRAMUSCULAR ADIPOSE TISSUE IS RELATED TO INCREASED CAPILLARIZATION IN OLDER ADULTS

2020 ◽  
pp. 1-5
Author(s):  
O. Addison
Keyword(s):  
Older Adults ◽  
Body Mass Index ◽  
Adipose Tissue ◽  
Body Mass ◽  
Medical Center ◽  
Linear Regression Analysis ◽  
Positive Development ◽  
Intramuscular Adipose Tissue ◽  
Relationship Of ◽  
The Relationship

Background: High levels of intramuscular adipose tissue and low levels of capillarization are both predicative of low muscle and mobility function in older adults, however little is known about their relationship. Objectives: The purpose of this study was to examine the relationship of intramuscular adipose tissue and capillarization in older adults. Setting: An outpatient medical center. Participants: Forty-seven sedentary adults (age 59.9 ± 1.0 years, BMI 32.0 ± 0.7 kg/m2, VO2max 22.4 ± 0.7 ml/kg/min); Measurements: All participants underwent CT scans to determine intramuscular adipose tissue and muscle biopsies to determine capillarization in the mid-thigh. A step-wise hierarchical linear regression analysis was used to examine the contributions of age, sex, race, body mass index, 2-hour postprandial glucose, VO2max, and muscle capillarization, to the variability in intramuscular adipose tissue. Results: The predictors as a group accounted for 38.1% of the variance in intramuscular adipose tissue, with body mass index and capillarization each significantly contributing to the final model (P<0.001). The part correlation of body mass index with intramuscular adipose tissue was r = 0.47, and the part correlation of capillarization with intramuscular adipose tissue was r = 0.39, indicating that body mass index and capillarization explained 22.1%, and 15.2% of the variance in intramuscular adipose tissue. Conclusions: While increased muscle capillarization is typically thought of as a positive development, in some clinical conditions, such as tendinopathies, an increase in capillarization is part of the pathological process related to expansion of the extracellular matrix and fibrosis. This may also be an explanation for the surprising finding that high capillarization is related to high levels of intramuscular adipose tissue. Future studies are necessary to determine the relationship of changes in both capillarization and intramuscular adipose tissue after interventions, such as exercise.

The relationship between oxygen uptake reserve and heart rate reserve is affected by intensity and duration during aerobic exercise at constant work rate

2011 ◽  
Vol 36 (6) ◽  
pp. 839-847 ◽  
Author(s):  
Felipe A. Cunha ◽  
Adrian W. Midgley ◽  
Walace D. Monteiro ◽  
Felipe K. Campos ◽  
Paulo T.V. Farinatti
Keyword(s):  
Heart Rate ◽  
Oxygen Uptake ◽  
Exercise Testing ◽  
Exercise Intensity ◽  
Maximal Exercise ◽  
Work Rate ◽  
Heart Rate Reserve ◽  
Constant Work Rate ◽  
The Stability ◽  
The Relationship

The relationship between the percentage of heart rate reserve (%HRR) and percentage of oxygen uptake reserve (%VO2R) has been recommended for prescribing aerobic exercise intensity. However, this relationship was derived from progressive maximal exercise testing data, and the stability of the relationship during prolonged exercise at a constant work rate has not been established. The main aim of this study was to investigate the stability of the %VO2R–%HRR relationship during prolonged treadmill exercise bouts performed at 3 different constant work rates. Twenty-eight men performed 4 exercise tests: (i) a ramp-incremental maximal exercise test to determine maximal heart rate (HRmax) and maximal oxygen uptake (VO2max) and (ii) three 40-min exercise bouts at 60%, 70%, and 80% VO2R. HR and VO2 significantly increased over time and were influenced by exercise intensity (p < 0.001 and p = 0.004, respectively). A 1:1 relationship between %HRR and %VO2R, and between %HRR and %VO2max, was not observed, with mean differences of 8% (t = 5.2, p < 0.001) and 6% (t = 4.8, p < 0.001), respectively. The VO2 values predicted from the ACSM running equation were all significantly higher than the observed VO2 values (p < 0.001 for all comparisons), whereas a difference for HR was observed only for the tenth min of exercise at 80% VO2R (p = 0.041). In conclusion, the main finding of this study was that the %HRR–%VO2R relationship determined by linear regression, obtained from progressive maximal exercise testing, did not apply to prolonged treadmill running performed at 3 work rates.

The Relationship between Heart Rate Deflection and Ventilatory Threshold in Children Following Heart Surgery

1995 ◽  
Vol 7 (3) ◽  
pp. 263-269 ◽  
Author(s):  
Ralph K.L. Rogers ◽  
Tony Reybrouck ◽  
Maria Weymans ◽  
Monique Dumoulin ◽  
Marc Gewillig ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Surgery ◽  
Surgical Repair ◽  
Ventilatory Threshold ◽  
Linear Regression Analysis ◽  
Accurate Predictor ◽  
Graded Exercise Test ◽  
Significant Difference ◽  
Graded Exercise ◽  
The Relationship

This study assessed the relationship between the VO2 measured at ventilatory threshold (VT) and the VO2 measured at the point of deflection from linearity of heart rate (HRD). Twelve children (10 boys and 2 girls) with a mean age of 11.3 years (±4.8) performed a graded exercise test to determine VT and HRD. All children had undergone surgical repair for d-transposition of the great arteries at approximately 13 months of age. Because of failure to demonstrate HRD, the data from 4 patients were excluded from statistical analysis. For the remaining 8 patients there was no significant difference between mean VO2 (ml/kg/min) at VT and HRD (26.6 ± 6.4 vs. 26.3 ± 6.8; p > 0.25). Linear regression analysis revealed a correlation of r = 0.92 between the VO2 measured at VT and the VO2 measured at HRD. Only 8 of the 12 patients (66%) in this study satisfied criteria needed to identify the HRD. Therefore HRD may be an accurate predictor of VT in most but not all children who have had surgery for d-transposition of the great arteries.

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