Sweating sensitivity and capacity of women in relation to age

1982 ◽  
Vol 53 (3) ◽  
pp. 671-676 ◽  
Author(s):  
B. L. Drinkwater ◽  
J. F. Bedi ◽  
A. B. Loucks ◽  
S. Roche ◽  
S. M. Horvath
Keyword(s):  
Heat Stress ◽  
Older Women ◽  
Forearm Blood Flow ◽  
Thermal Environment ◽  
Sweat Rate ◽  
Age Groups ◽  
Whole Body ◽  
Volume Changes ◽  
Younger Women ◽  
Significant Difference

Ten postmenopausal and ten younger women rested for 2 h in a 40 degrees C, 22.2-Torr vapor pressure environment. Sweating response was monitored by resistance hygrometry for onset, a platform balance for whole-body sweat rate, and five individual capsules for regional sweat rate. Other variables measured included forearm blood flow, heart rate (HR), mean skin (Tsk) and rectal (Tre) temperatures, sweat electrolytes (Na+ and K+), oxygen uptake, and plasma volume changes. Preliminary tests included maximal aerobic power (VO2max) and percent body fat. Heat stress did not elicit any significant differences in sweating response between age groups. Indices of heat strain, Tre and HR, were also similar for both groups. The only significant difference between younger and older women was a higher Na+ concentration in the forearm sweat of postmenopausal women. No thermoregulatory responses were related to age, but both sweat rate (r = 0.48) and peak Tsk (r = -0.43) were related to VO2max. For healthy, active, older women aging did not diminish the functional capacity of the sweating mechanism to cope with heat stress while resting in this specific thermal environment.

Speech Breathing in Senescent and Younger Women During Oral Reading

1992 ◽  
Vol 35 (6) ◽  
pp. 1246-1255 ◽  
Author(s):  
Elizabeth E. Sperry ◽  
Richard J. Klich
Keyword(s):  
Older Women ◽  
Oral Reading ◽  
Age Groups ◽  
Sentence Length ◽  
Breathing Patterns ◽  
Younger Women ◽  
Significant Difference ◽  
Speech Breathing ◽  
Mean Differences ◽  
Reading Context

Breathing patterns in 20–30-year-old and 60–70-year-old women were recorded noninvasively during various nonspeech and oral reading tasks. On the nonspeech tasks, the only significant difference between groups was a smaller mean vital capacity for the older women. On oral reading, the older women had significantly greater means for absolute and relative inhalatory volumes, relative inhalatory airflow rates, absolute and relative volumes during nonphonatory exhalations, and relative exhalatory volumes. No significant mean differences between groups were found on absolute inhalatory airflow rates, absolute exhalatory volumes during speech, and absolute and relative exhalatory airflow rates. In both age groups, increases in sentence length were associated with significantly increased inhalatory and exhalatory volumes but mean airflow rates were not significantly affected by sentence length. Some differential effects of reading context on only the older group seemed to represent additional demands placed on their respiratory systems for speech breathing.

scholarly journals Utilization of preimplantation genetic testing in the USA

2021 ◽  
Author(s):  
Kaitlyn Roche ◽  
Catherine Racowsky ◽  
Joyce Harper
Keyword(s):  
Genetic Testing ◽  
Older Women ◽  
State Level ◽  
Oocyte Retrieval ◽  
Preimplantation Genetic Testing ◽  
Annual Increase ◽  
Younger Women ◽  
Live Birth Rates ◽  
Significant Difference ◽  
The Usa

Abstract Purpose To evaluate the use of preimplantation genetic testing (PGT) and live birth rates (LBR) in the USA from 2014 to 2017 and to understand how PGT is being used at a clinic and state level. Methods This study accessed SART data for 2014 to 2017 to determine LBR and the CDC for years 2016 and 2017 to identify PGT usage. Primary cycles included only the first embryo transfer within 1 year of an oocyte retrieval; subsequent cycles included transfers occurring after the first transfer or beyond 1 year of oocyte retrieval. Results In the SART data, the number of primary PGT cycles showed a significant monotonic annual increase from 18,805 in 2014 to 54,442 in 2017 (P = 0.042) and subsequent PGT cycles in these years increased from 2946 to 14,361 (P = 0.01). There was a significant difference in primary PGT cycle use by age, where younger women had a greater percentage of PGT treatment cycles than older women. In both PGT and non-PGT cycles, the LBR per oocyte retrieval decreased significantly from 2014 to 2017 (P<0001) and younger women had a significantly higher LBR per oocyte retrieval compared to older women (P < 0.001). The CDC data revealed that in 2016, just 53 (11.4%) clinics used PGT for more than 50% of their cycles, which increased to 99 (21.4%) clinics in 2017 (P< 0.001). Conclusions A growing number of US clinics are offering PGT to their patients. These findings support re-evaluation of the application for PGT.

Forearm cutaneous vascular and sudomotor responses to whole body passive heat stress in young smokers

2015 ◽  
Vol 309 (1) ◽  
pp. R36-R42 ◽  
Author(s):  
Nicole E. Moyen ◽  
Hannah M. Anderson ◽  
Jenna M. Burchfield ◽  
Matthew A. Tucker ◽  
Melina A. Gonzalez ◽  
...  
Keyword(s):  
Heat Stress ◽  
Sweat Gland ◽  
Sweat Rate ◽  
Whole Body ◽  
Mean Body Temperature ◽  
Doppler Flowmetry ◽  
Cutaneous Vasodilation ◽  
Local Sweat Rate ◽  
Vasomotor Activity ◽  
Young Smokers

The purpose of this study was to compare smokers and nonsmokers' sudomotor and cutaneous vascular responses to whole body passive heat stress. Nine regularly smoking (SMK: 29 ± 9 yr; 10 ± 6 cigarettes/day) and 13 nonsmoking (N-SMK: 27 ± 8 yr) males were passively heated until core temperature (TC) increased 1.5°C from baseline. Forearm local sweat rate (LSR) via ventilated capsule, sweat gland activation (SGA), sweat gland output (SGO), and cutaneous vasomotor activity via laser-Doppler flowmetry (CVC) were measured as mean body temperature increased (ΔTb) during passive heating using a water-perfused suit. Compared with N-SMK, SMK had a smaller ΔTb at the onset of sweating (0.52 ± 0.19 vs. 0.35 ± 0.14°C, respectively; P = 0.03) and cutaneous vasodilation (0.61 ± 0.21 vs. 0.31 ± 0.12°C, respectively; P < 0.01). Increases in LSR and CVC per °C ΔTb (i.e., sensitivity) were similar in N-SMK and SMK (LSR: 0.63 ± 0.21 vs. 0.60 ± 0.40 Δmg/cm2/min/°C ΔTb, respectively, P = 0.81; CVC: 82.5 ± 46.2 vs. 58.9 ± 23.3 Δ%max/°C ΔTb, respectively; P = 0.19). However, the plateau in LSR during whole body heating was higher in N-SMK vs. SMK (1.00 ± 0.13 vs. 0.79 ± 0.26 mg·cm−2·min−1; P = 0.03), which was likely a result of higher SGO (8.94 ± 3.99 vs. 5.94 ± 3.49 μg·gland−1·min−1, respectively; P = 0.08) and not number of SGA (104 ± 7 vs. 121 ± 9 glands/cm2, respectively; P = 0.58). During whole body passive heat stress, smokers had an earlier onset for forearm sweating and cutaneous vasodilation, but a lower local sweat rate that was likely due to lower sweat output per gland. These data provide insight into local (i.e., forearm) thermoregulatory responses of young smokers during uncompensatory whole body passive heat stress.

scholarly journals All in this together? Austerity and the gender-age gap in the 2015 and 2017 British general elections

2019 ◽  
Vol 21 (4) ◽  
pp. 667-688 ◽  
Author(s):  
Anna Sanders ◽  
Rosalind Shorrocks
Keyword(s):  
Older Women ◽  
Age Groups ◽  
Conservative Party ◽  
Vote Choice ◽  
Younger Women ◽  
Face To Face ◽  
Household Finances ◽  
Age Gap ◽  
General Elections ◽  
The Impact

The 2010–2015 Conservative-led Coalition’s austerity policies hit women financially harder than men. However, contrary to expectations at the time, the Conservatives still gained more support from women than men on average in the 2015 general election. We examine the impact of austerity on vote choice in the 2015 and 2017 general elections through analysis of Labour and Conservative economic policy in conjunction with data from the British Election Study’s face-to-face post-election surveys. The expectation that women should be particularly anti-austerity and thus less supportive of the Conservative Party does hold for younger women, who were especially pessimistic relative to their male peers and older age groups about their living costs, household finances, the economy, and the National Health Service in both elections. However, this does not hold for older women, who were protected by the Coalition’s policies on pensions and were more similar to men in their assessment of their economic situation.

scholarly journals Can traditional games be an option in increasing the physical activity of women following mastectomy?

2015 ◽  
Vol 7 (1) ◽  
Author(s):  
Małgorzata Bronikowska ◽  
Michał Bronikowski ◽  
Agata Glapa ◽  
Bartosz Prabucki
Keyword(s):  
Physical Activity ◽  
Older Women ◽  
Age Groups ◽  
Recovery Process ◽  
Age Group ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Younger Women ◽  
Younger Age ◽  
Ring Net

SummaryStudy aim: the purpose of the present study was to investigate the potential of traditional games as a method of increasing the physical activity (PA) of women following mastectomy. A cross-sectional survey during the 20th ONCO Games was conducted and the sample included data from women divided into two groups: up to 50 years old (n = 26) and over 50 years old (n = 86).Material and methods: PA was assessed using a questionnaire, and the number of steps taking during 30-minute periods was measured using pedometers during each of the games. Exertion was evaluated using Borg’s Scale.Results: there was no difference in levels of coherence between the age groups. The group of younger women were statistically more active (M = 3.34 days/week) than the older group (M = 2.77 days/week). All the games were evaluated to be of light intensity, with ringo perceived as being statistically more fatiguing in the over 50 age group. The highest number of steps was performed during the game of ring-net-ball (M = 1903 steps/30 min) in both age groups, with older women performing statistically more steps. Similar situations were observed in the cases of pétanque and speedminton. In ringo, the situation was reversed. The lowest number of steps was recorded in pétanque in the younger age group (M = 296 steps/30 min).Conclusion: this study indicates that in the rehabilitation and recovery process after mastectomy, traditional games could be a bridging link between exercising and sports as they provide not just activity but also a unique and valuable social context.

scholarly journals COMPARISON OF HEALTH LITERACY AMONG IRAQI WOMEN WITH DIFFERENT AGE GROUPS

2018 ◽  
Vol 11 (2) ◽  
pp. 106
Author(s):  
Zena Mudhfar Al-nema
Keyword(s):  
Health Literacy ◽  
Health Knowledge ◽  
Age Groups ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Younger Women ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Source Of Information

 Objectives: The objectives of the study were to compare the health knowledge of women of different age groups. To evaluate different methods for developing health literacy.Methods: A cross-sectional study was conducted from December 2014 to January 2016 in Baghdad, Iraq. All candidates were females, age ≥18 years, neither medical staff nor medical students.The sample was divided into two groups: Group A: Females aged18–45 years, Group B: Females aged >45 years. A comparison between the two groups regarding their health literacy and the source of information was made.Results: The final sample included 213 women, of them, there were 107≤45 years (Group A) and 106>45 years (Group B) women. Significant difference was found between both groups regarding the knowledge about the prevention of cholera where the accurate answers were 46.7% in Group A versus 80.1% in Group B. The main source of information for both groups was the personal experience. However, internet was used more (42%) by the younger women (Group A), and television was used more (52.8%) by the older women (Group B).Conclusion: Young women had a better literacy on common medical problems, but the old showed overall limited health literacy. Pharmacists, physicians, and activities of the Ministry of Health played an impotent role in health literacy in the old women. 

Cutaneous vascular responses to isometric handgrip exercise during local heating and hyperthermia

2005 ◽  
Vol 98 (6) ◽  
pp. 2011-2018 ◽  
Author(s):  
Gregg R. McCord ◽  
Christopher T. Minson
Keyword(s):  
Blood Flow ◽  
Heat Stress ◽  
Skin Blood Flow ◽  
Sweat Rate ◽  
Local Heating ◽  
Whole Body ◽  
Handgrip Exercise ◽  
Isometric Handgrip ◽  
Hyperthermic Condition ◽  
Isometric Handgrip Exercise

The dramatic increase in skin blood flow and sweating observed during heat stress is mediated by poorly understood sympathetic cholinergic mechanisms. One theory suggests that a single sympathetic cholinergic nerve mediates cutaneous active vasodilation (AVD) and sweating via cotransmission of separate neurotransmitters, because AVD and sweating track temporally and directionally when activated during passive whole body heat stress. It has also been suggested that these responses are regulated independently, because cutaneous vascular conductance (CVC) has been shown to decrease, whereas sweat rate increases, during combined hyperthermia and isometric handgrip exercise. We tested the hypothesis that CVC decreases during isometric handgrip exercise if skin blood flow is elevated using local heating to levels similar to that induced by pronounced hyperthermia but that this does not occur at lower levels of skin blood flow. Subjects performed isometric handgrip exercise as CVC was elevated at selected sites to varying levels by local heating (which is independent of AVD) in thermoneutral and hyperthermic conditions. During thermoneutral isometric handgrip exercise, CVC decreased at sites in which blood flow was significantly elevated before exercise (−6.5 ± 1.8% of maximal CVC at 41°C and −10.5 ± 2.0% of maximal CVC at 43°C; P < 0.05 vs. preexercise). During isometric handgrip exercise in the hyperthermic condition, an observed decrease in CVC was associated with the level of CVC before exercise. Taken together, these findings argue against withdrawal of AVD to explain the decrease in CVC observed during isometric handgrip exercise in hyperthermic conditions.

TRPV4 channel blockade does not modulate skin vasodilation and sweating during hyperthermia or cutaneous post-occlusive reactive and thermal hyperemia

2020 ◽  
Author(s):  
Naoto Fujii ◽  
Glen P. Kenny ◽  
Gregory W. McGarr ◽  
Tatsuro Amano ◽  
Yasushi Honda ◽  
...  
Keyword(s):  
Young Adults ◽  
Heat Stress ◽  
Sweat Rate ◽  
Reactive Hyperemia ◽  
Body Core Temperature ◽  
Whole Body ◽  
Secretory Cells ◽  
Transient Receptor Potential Vanilloid ◽  
Cutaneous Vasodilation ◽  
Trpv4 Channel

Transient receptor potential vanilloid 4 (TRPV4) channels exist on vascular endothelial cells and eccrine sweat gland secretory cells in human skin. Here, we assessed if TRPV4 channels contribute to cutaneous vasodilation and sweating during whole-body passive heat stress (protocol 1) and to cutaneous vasodilation during post-occlusive reactive hyperemia and local thermal hyperemia (protocol 2). Intradermal microdialysis was employed to locally deliver pharmacological agents to forearm skin sites where cutaneous vascular conductance (CVC) and sweat rate were assessed. In protocol 1 (twelve young adults), CVC and sweat rate were increased by passive whole-body heating resulting in a body core temperature elevation of 1.2±0.1ºC. The elevated CVC and sweat rate assessed at sites treated with TRPV4 channel antagonist (either 200 µM HC-067047 or 125 µM GSK2193874) were not different from the vehicle control site (5 % dimethyl sulfoxide). After whole-body heating, a TRPV4 channel agonist (100 µM GSK1016790A) was administered to each skin site, eliciting elevations in CVC. Relative to control, this response was partly attenuated by both TRPV4 channel antagonists, confirming drug efficacy. In protocol 2 (ten young adults), CVC was increased following a 5-min arterial occlusion and during local heating from 33 to 42ºC. These responses did not differ between the control and the TRPV4 channel antagonist sites (200 µM HC-067047). We show that TRPV4 channels are not required for regulating cutaneous vasodilation or sweating during a whole-body passive heat stress. Further, they are not required for regulating cutaneous vasodilation during post-occlusive reactive hyperemia and local thermal hyperemia.

Effect of age on heat-activated sweat gland density and flow during exercise in dry heat

1987 ◽  
Vol 63 (3) ◽  
pp. 1089-1094 ◽  
Author(s):  
R. K. Anderson ◽  
W. L. Kenney
Keyword(s):  
Older Women ◽  
Sweat Gland ◽  
Age Groups ◽  
Whole Body ◽  
Moderate Intensity ◽  
Exercise Session ◽  
Sweat Glands ◽  
Moderate Intensity Exercise ◽  
Age Related ◽  
Eccrine Glands

Physiological responses of eight postmenopausal older women (age 52–62 yr) and eight younger women (age 20–30 yr) were compared during moderate intensity exercise in a hot dry environment (48 degrees C dry bulb, 25 degrees C wet bulb). The age groups were matched on the basis of maximal O2 consumption (VO2max), body surface area, and body fatness. After heat acclimation the women walked at 40% VO2max for up to 2 h in the hot dry environment while heart rate (HR), rectal temperature (Tre), mean skin temperature (Tsk), whole-body sweating rate (Msw), and local sweating rates (msw; forearm, chest, and scapula) were measured. Additionally, the density of heat-activated sweat glands (HASG) was determined and average sweat gland flow (SGF) was calculated for the scapular area. Although no differences between age groups were found in HR response (when analyzed as percent of maximal HR) or Tsk, the older women had a significantly higher Tre throughout the heat-exercise session. The greater heat storage of the older women may be explained by their significantly lower Msw and msw. There were no differences between the younger and older women in the density of HASG after 30 min; therefore, the lower msw reflects a diminished output per HASG rather than a decrease in the number of sweat glands recruited. The diminished thermoregulatory ability of the older women, unrelated to differences in VO2max, appears to reflect either 1) a diminished response of the sweat glands to central and/or peripheral stimuli, or 2) an age-related structural alteration in the eccrine glands or surrounding skin cells.

scholarly journals Pelvic inflammatory disease and causative pathogens in older women in a medical center in eastern Taiwan: A retrospective cross-sectional study

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0257627
Author(s):  
Pei-Chen Chen ◽  
Pei-Chen Li ◽  
Dah-Ching Ding
Keyword(s):  
Pelvic Inflammatory Disease ◽  
Older Women ◽  
Inflammatory Disease ◽  
Medical Center ◽  
Age Groups ◽  
Cross Sectional Study ◽  
Chi Square ◽  
Cross Sectional ◽  
Sexually Transmitted ◽  
Younger Women

Objectives Most research into the management of pelvic inflammatory disease (PID) is in younger women and focuses on sexually transmitted pathogens such as N. gonorrhoeae or C. trachomatis. Non-sexually transmitted bacterial pathogens and PID in older women are rarely examined. The objective of this study is to explore cervical culture pathogens in women of different age groups in a medical center in eastern Taiwan. Methods We enrolled patients whose medical records were diagnosed with PID (ICD-9-CM 614.0 [N70.01–03], 614.1[N70.11–13], 614.9 [N73.5, N73.9]) at our hospital from October 2014 to March 2020. Patients were divided into three groups according to age: the age <25 years, age 25–44 years, and the ≥ 45 years group. Chi-square test, ANOVA and logistic regression were used for statistical analysis. In subgroup analysis, endocervical pathogens were further stratified into vaginal, respiratory, enteric, skin, oral, and other. Results A total of 96 patients were included in the study. There were 31 patients in the age ≥ 45 years group, 52 patients in the age 25–44 years group, and 13 patients in the age <25 years group. Vagina and enteric pathogens were the most common pathogens among all groups. The isolated respiratory and other pathogens were more in the age ≥ 45 years group than in the other two groups. Prevotella bivia was more common in the age <25 years and 25–44 years groups. Conclusions This may be due to different pathogeneses of PID in the age ≥ 45 years patients. Our study can be used as a reference for antibiotic choice of non-sexually transmitted PID and to prevent long-term sequelae of PID.

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