Jonathan Thornburg
Datos Biográficos
| ID | 4301529 |
|---|---|
| NOMBRE | Jonathan Thornburg |
| NOMBRES | Jonathan |
| APELLIDO | Thornburg |
| FIRMA | THORNBURG J |
| AFILIACIONES | RTI International |
| ORCID | 0000-0001-6096-8265 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 11 |
| TOTAL DE CITAS | 0 |
| TOTAL COMO AUTOR | 11 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 2009 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2026 |
| ÍNDICE H | 0 |
Impact of cooking with liquefied petroleum gas compared with traditional cooking practices on perinatal and early neonatal mortality
Objective To determine whether liquefied petroleum gas (LPG) can reduce perinatal mortality in a setting with high reliance on biomass fuels for cooking. Design Community-based two-arm parallel cluster randomised controlled trial, in Sherpur, Bangladesh. Participants 4944 pregnant women were recruited, with 2472 in each group. Eligible women were pregnant between 40 and 120 days, aged 15–49 years, permanent residents and planning to give birth in…
Salivary/Serum Progesterone Ratio Differs Between Menstrual Cycle Phases but Not Between Populations
Objectives Many investigations of human health, behaviors, and adaptations require an indicator of ovarian cycle functioning as a causal, outcome, or confounding variable in the study design and analyses. Because the dynamic fluctuations in cycle hormones can rarely be adequately characterized by a single measurement, but repeated blood sampling can be onerous, salivary free progesterone (P Free‐SAL ) concentration is widely used in both clinical…
Well‐being in healthy Icelandic women varies with extreme seasonality in ambient light
Seasonal variation in photoperiod may affect psychosocial and physical well‐being in healthy persons. We tested this hypothesis in healthy pre‐menopausal women, without a history of mood disorders, living year‐round in Reykjavik, Iceland (64.1°N). Participants reported daily self‐assessments of well‐being throughout a complete ovulatory menstrual cycle in summer and/or winter (70% participated in both seasons). Scores for mood, cognitive acuity, …
C‐reactive protein (CRP) in high altitude Bolivian peri‐urban adolescents varies by adiposity, current illness, height, socioeconomic status, sex, and menarcheal status
OBJECTIVES: In non-industrialized and low-income populations, adipose stores can serve as a valuable buffer against harsh conditions such as seasonal food scarcity. However, these reserves may incur costs due to adipocytes' production of pro-inflammatory cytokines; inflammation is associated with increased risk for cardiometabolic diseases later in life. Life history theory posits that, especially in populations with high juvenile mortality, high…
Pregnant Women’s Exposure to Household Air Pollution in Rural Bangladesh
The use of liquefied petroleum gas (LPG) for cooking is a strategy to reduce household air pollution (HAP) exposure and improve health. We conducted this feasibility study to evaluate personal exposure measurement methods to representatively assess reductions in HAP exposure. We enrolled 30 pregnant women to wear a MicroPEM for 24 h to assess their HAP exposure when cooking with a traditional stove (baseline) and with an LPG stove (intervention).…
Recognizing normal reproductive biology
The idealized "normal" menstrual cycle typically comprises a coordinated ebb and flow of hormones over a 28-day span with ovulation invariably shown at the midpoint. It's a pretty picture-but rare. Systematic studies have debunked the myth that cycles occur regularly about every 28 days. However, assumptions persist regarding the extent and normalcy of variation in other cycle biomarkers. The processes of judging which phenotypic variants are "no…
Children’s Particulate Matter Exposure Characterization as Part of the New Hampshire Birth Cohort Study
As part of the New Hampshire Birth Cohort Study, children 3 to 5 years of age participated in a personal PM 2.5 exposure study. This paper characterizes the personal PM 2.5 exposure and protocol compliance measured with a wearable sensor. The MicroPEMTM collected personal continuous and integrated measures of PM 2.5 exposure and compliance data on 272 children. PM 2.5 , black carbon (BC), and brown carbon tobacco smoke (BrC-ETS) exposure was meas…
A Feasibility Study Assessing Acceptability and Supply Issues of Distributing LPG Cookstoves and Gas Cylinders to Pregnant Women Living in Rural Bangladesh for Poriborton
Our aim was to develop a protocol for a cluster randomised controlled trial to assess the impact of liquid petroleum gas (LPG) cooking compared to usual cooking on perinatal mortality in pregnant women in rural Bangladesh. We, therefore, aimed to assess the feasibility of the planned trial and the barriers/facilitators of distributing LPG to rural households. We conducted a feasibility study in rural Bangladesh using an iterative design. We inclu…
Sri Lanka Pilot Study to Examine Respiratory Health Effects and Personal PM2.5 Exposures from Cooking Indoors
A pilot study of indoor air pollution produced by biomass cookstoves was conducted in 53 homes in Sri Lanka to assess respiratory conditions associated with stove type ("Anagi" or "Traditional"), kitchen characteristics (e.g., presence of a chimney in the home, indoor cooking area), and concentrations of personal and indoor particulate matter less than 2.5 micrometers in diameter (PM2.5). Each primary cook reported respiratory conditions for hers…
Seasonal modulation of reproductive effort during early pregnancy in humans
Life history theory predicts that early pregnancy presents a relatively low cost, uncontested opportunity for a woman to terminate investment in a current reproductive opportunity if a conceptus is of poor quality and/or maternal status or environmental conditions are not propitious for a successful birth. We tested this hypothesis in rural Bolivian women experiencing substantial seasonal variation in workload and food resources. Significant risk…
Seasonal and circadian variation in salivary testosterone in rural Bolivian men
Testosterone (T) plays a key role in the increase and maintenance of muscle mass and bone density in adult men. Life history theory predicts that environmental stress may prompt a reallocation of such investments to those functions critical to survival. We tested this hypothesis in two studies of rural Bolivian adult men by comparing free T levels and circadian rhythms during late winter, which is especially severe, to those in less arduous seaso…
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Seasonal modulation of reproductive effort during early pregnancy in humans
Life history theory predicts that early pregnancy presents a relatively low cost, uncontested opportunity for a woman to terminate investment in a current reproductive opportunity if a conceptus is of poor quality and/or maternal status or environmental conditions are not propitious for a successful birth. We tested this hypothesis in rural Bolivian women experiencing substantial seasonal variation in workload and food resources. Significant risk…
Seasonal and circadian variation in salivary testosterone in rural Bolivian men
Testosterone (T) plays a key role in the increase and maintenance of muscle mass and bone density in adult men. Life history theory predicts that environmental stress may prompt a reallocation of such investments to those functions critical to survival. We tested this hypothesis in two studies of rural Bolivian adult men by comparing free T levels and circadian rhythms during late winter, which is especially severe, to those in less arduous seaso…
Sri Lanka Pilot Study to Examine Respiratory Health Effects and Personal PM2.5 Exposures from Cooking Indoors
A pilot study of indoor air pollution produced by biomass cookstoves was conducted in 53 homes in Sri Lanka to assess respiratory conditions associated with stove type ("Anagi" or "Traditional"), kitchen characteristics (e.g., presence of a chimney in the home, indoor cooking area), and concentrations of personal and indoor particulate matter less than 2.5 micrometers in diameter (PM2.5). Each primary cook reported respiratory conditions for hers…
A Feasibility Study Assessing Acceptability and Supply Issues of Distributing LPG Cookstoves and Gas Cylinders to Pregnant Women Living in Rural Bangladesh for Poriborton
Our aim was to develop a protocol for a cluster randomised controlled trial to assess the impact of liquid petroleum gas (LPG) cooking compared to usual cooking on perinatal mortality in pregnant women in rural Bangladesh. We, therefore, aimed to assess the feasibility of the planned trial and the barriers/facilitators of distributing LPG to rural households. We conducted a feasibility study in rural Bangladesh using an iterative design. We inclu…
Recognizing normal reproductive biology
The idealized "normal" menstrual cycle typically comprises a coordinated ebb and flow of hormones over a 28-day span with ovulation invariably shown at the midpoint. It's a pretty picture-but rare. Systematic studies have debunked the myth that cycles occur regularly about every 28 days. However, assumptions persist regarding the extent and normalcy of variation in other cycle biomarkers. The processes of judging which phenotypic variants are "no…
Children’s Particulate Matter Exposure Characterization as Part of the New Hampshire Birth Cohort Study
As part of the New Hampshire Birth Cohort Study, children 3 to 5 years of age participated in a personal PM 2.5 exposure study. This paper characterizes the personal PM 2.5 exposure and protocol compliance measured with a wearable sensor. The MicroPEMTM collected personal continuous and integrated measures of PM 2.5 exposure and compliance data on 272 children. PM 2.5 , black carbon (BC), and brown carbon tobacco smoke (BrC-ETS) exposure was meas…
Pregnant Women’s Exposure to Household Air Pollution in Rural Bangladesh
The use of liquefied petroleum gas (LPG) for cooking is a strategy to reduce household air pollution (HAP) exposure and improve health. We conducted this feasibility study to evaluate personal exposure measurement methods to representatively assess reductions in HAP exposure. We enrolled 30 pregnant women to wear a MicroPEM for 24 h to assess their HAP exposure when cooking with a traditional stove (baseline) and with an LPG stove (intervention).…
Well‐being in healthy Icelandic women varies with extreme seasonality in ambient light
Seasonal variation in photoperiod may affect psychosocial and physical well‐being in healthy persons. We tested this hypothesis in healthy pre‐menopausal women, without a history of mood disorders, living year‐round in Reykjavik, Iceland (64.1°N). Participants reported daily self‐assessments of well‐being throughout a complete ovulatory menstrual cycle in summer and/or winter (70% participated in both seasons). Scores for mood, cognitive acuity, …
C‐reactive protein (CRP) in high altitude Bolivian peri‐urban adolescents varies by adiposity, current illness, height, socioeconomic status, sex, and menarcheal status
OBJECTIVES: In non-industrialized and low-income populations, adipose stores can serve as a valuable buffer against harsh conditions such as seasonal food scarcity. However, these reserves may incur costs due to adipocytes' production of pro-inflammatory cytokines; inflammation is associated with increased risk for cardiometabolic diseases later in life. Life history theory posits that, especially in populations with high juvenile mortality, high…
Salivary/Serum Progesterone Ratio Differs Between Menstrual Cycle Phases but Not Between Populations
Objectives Many investigations of human health, behaviors, and adaptations require an indicator of ovarian cycle functioning as a causal, outcome, or confounding variable in the study design and analyses. Because the dynamic fluctuations in cycle hormones can rarely be adequately characterized by a single measurement, but repeated blood sampling can be onerous, salivary free progesterone (P Free‐SAL ) concentration is widely used in both clinical…
Impact of cooking with liquefied petroleum gas compared with traditional cooking practices on perinatal and early neonatal mortality
Objective To determine whether liquefied petroleum gas (LPG) can reduce perinatal mortality in a setting with high reliance on biomass fuels for cooking. Design Community-based two-arm parallel cluster randomised controlled trial, in Sherpur, Bangladesh. Participants 4944 pregnant women were recruited, with 2472 in each group. Eligible women were pregnant between 40 and 120 days, aged 15–49 years, permanent residents and planning to give birth in…
Medicine (10 obras) · Demography (6 obras) · Environmental health (6 obras) · Biology (5 obras) · Energy and Environment Impacts (5 obras) · Internal Medicine (5 obras) · Air Quality and Health Impacts (4 obras) · Endocrinology (4 obras) · Population (4 obras) · Liquefied petroleum gas (3 obras)