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Chaudhari NN, Imms PE, Chowdhury NF, Gatz M, Trumble BC, Mack WJ, Law EM, Sutherland ML, Sutherland JD, Rowan CJ, Wann LS, Allam AH, Thompson RC, Michalik DE, Miyamoto M, Lombardi G, Cummings DK, Seabright E, Alami S, Garcia AR, Rodriguez DE, Gutierrez RQ, Copajira AJ, Hooper PL, Buetow KH, Stieglitz J, Gurven MD, Thomas GS, Kaplan HS, Finch CE, Irimia A. Increases in regional brain volume across two native South American male populations. GeroScience 2024; 46:4563-4583. [PMID: 38683289 PMCID: PMC11336037 DOI: 10.1007/s11357-024-01168-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 04/15/2024] [Indexed: 05/01/2024] Open
Abstract
Industrialized environments, despite benefits such as higher levels of formal education and lower rates of infections, can also have pernicious impacts upon brain atrophy. Partly for this reason, comparing age-related brain volume trajectories between industrialized and non-industrialized populations can help to suggest lifestyle correlates of brain health. The Tsimane, indigenous to the Bolivian Amazon, derive their subsistence from foraging and horticulture and are physically active. The Moseten, a mixed-ethnicity farming population, are physically active but less than the Tsimane. Within both populations (N = 1024; age range = 46-83), we calculated regional brain volumes from computed tomography and compared their cross-sectional trends with age to those of UK Biobank (UKBB) participants (N = 19,973; same age range). Surprisingly among Tsimane and Moseten (T/M) males, some parietal and occipital structures mediating visuospatial abilities exhibit small but significant increases in regional volume with age. UKBB males exhibit a steeper negative trend of regional volume with age in frontal and temporal structures compared to T/M males. However, T/M females exhibit significantly steeper rates of brain volume decrease with age compared to UKBB females, particularly for some cerebro-cortical structures (e.g., left subparietal cortex). Across the three populations, observed trends exhibit no interhemispheric asymmetry. In conclusion, the age-related rate of regional brain volume change may differ by lifestyle and sex. The lack of brain volume reduction with age is not known to exist in other human population, highlighting the putative role of lifestyle in constraining regional brain atrophy and promoting elements of non-industrialized lifestyle like higher physical activity.
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Affiliation(s)
- Nikhil N Chaudhari
- Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA, USA
- Ethel Percy Andrus Gerontology Center, Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - Phoebe E Imms
- Ethel Percy Andrus Gerontology Center, Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - Nahian F Chowdhury
- Ethel Percy Andrus Gerontology Center, Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - Margaret Gatz
- Center for Economic and Social Research, Dana and David Dornsife College of Letters, Arts and Sciences, University of Southern California, Los Angeles, CA, USA
| | - Benjamin C Trumble
- Center for Evolution & Medicine, School of Human Evolution and Social Change, School of Life Sciences, Arizona State University, Tempe, AZ, USA
| | - Wendy J Mack
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - E Meng Law
- iBRAIN Research Laboratory, Departments of Neuroscience, Computer Systems and Electrical Engineering, Monash University, Melbourne, VIC, Australia
- Department of Radiology, The Alfred Health Hospital, Melbourne, VIC, Australia
- Department of Neurology, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, USA
| | | | | | - Christopher J Rowan
- Renown Institute for Heart and Vascular Health, Reno, NV, USA
- School of Medicine, University of Nevada, Reno, NV, USA
| | - L Samuel Wann
- Division of Cardiology, University of New Mexico, Albuquerque, NM, USA
| | - Adel H Allam
- Department of Cardiology, School of Medicine, Al-Azhar University, Al Mikhaym Al Daem, Cairo, Egypt
| | - Randall C Thompson
- Saint Luke's Mid America Heart Institute, University of Missouri, Kansas City, MO, USA
| | - David E Michalik
- Department of Pediatrics, School of Medicine, University of California, Irvine, Orange, CA, USA
- MemorialCare Miller Children's & Women's Hospital, Long Beach Medical Center, Long Beach, CA, USA
| | - Michael Miyamoto
- Division of Cardiology, Mission Heritage Medical Group, Providence Health, Mission Viejo, CA, USA
| | | | - Daniel K Cummings
- Department of Anthropology, University of New Mexico, Albuquerque, NM, USA
- Economic Science Institute, Argyros School of Business and Economics, Chapman University, Orange, CA, USA
| | - Edmond Seabright
- Department of Anthropology, University of New Mexico, Albuquerque, NM, USA
| | - Sarah Alami
- Department of Anthropology, University of New Mexico, Albuquerque, NM, USA
| | - Angela R Garcia
- Center for Evolution & Medicine, School of Human Evolution and Social Change, School of Life Sciences, Arizona State University, Tempe, AZ, USA
| | - Daniel E Rodriguez
- Institute of Biomedical Research, San Simon University, Cochabamba, Bolivia
| | | | | | - Paul L Hooper
- Department of Anthropology, University of New Mexico, Albuquerque, NM, USA
| | - Kenneth H Buetow
- Center for Evolution & Medicine, School of Human Evolution and Social Change, School of Life Sciences, Arizona State University, Tempe, AZ, USA
| | - Jonathan Stieglitz
- Institute for Advanced Study in Toulouse, Toulouse 1 Capitol University, Toulouse, France
| | - Michael D Gurven
- Department of Anthropology, University of California, Santa Barbara, USA
| | - Gregory S Thomas
- MemorialCare Health Systems, Fountain Valley, CA, USA
- Division of Cardiology, University of California, Irvine, Orange, CA, USA
| | - Hillard S Kaplan
- Economic Science Institute, Argyros School of Business and Economics, Chapman University, Orange, CA, USA
| | - Caleb E Finch
- Ethel Percy Andrus Gerontology Center, Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
- Departments of Biological Sciences, Anthropology and Psychology, Dana and David Dornsife College of Letters, Arts and Sciences, University of Southern California, Los Angeles, CA, USA
| | - Andrei Irimia
- Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA, USA.
- Ethel Percy Andrus Gerontology Center, Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA.
- Department of Quantitative and Computational Biology, Dana and David Dornsife College of Letters, Arts and Sciences, University of Southern California, Los Angeles, CA, USA.
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Trumble BC, Negrey J, Koebele SV, Thompson RC, Samuel Wann L, Allam AH, Beheim B, Linda Sutherland M, Sutherland JD, Eid Rodriguez D, Michalik DE, Rowan CJ, Lombardi GP, Garcia AR, Cummings DK, Seabright E, Alami S, Kraft TS, Hooper P, Buetow K, Irimia A, Gatz M, Stieglitz J, Gurven MD, Kaplan H, Thomas GS. Testosterone is positively associated with coronary artery calcium in a low cardiovascular disease risk population. Evol Med Public Health 2023; 11:472-484. [PMID: 38145005 PMCID: PMC10746324 DOI: 10.1093/emph/eoad039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 10/11/2023] [Indexed: 12/26/2023] Open
Abstract
Background In industrialized populations, low male testosterone is associated with higher rates of cardiovascular mortality. However, coronary risk factors like obesity impact both testosterone and cardiovascular outcomes. Here, we assess the role of endogenous testosterone on coronary artery calcium in an active subsistence population with relatively low testosterone levels, low cardiovascular risk and low coronary artery calcium scores. Methodology In this cross-sectional community-based study, 719 Tsimane forager-horticulturalists in the Bolivian Amazon aged 40+ years underwent computed tomography (49.8% male, mean age 57.6 years). Results Coronary artery calcium levels were low; 84.5% had no coronary artery calcium. Zero-inflated negative binomial models found testosterone was positively associated with coronary artery calcium for the full sample (Incidence Rate Ratio [IRR] = 1.477, 95% Confidence Interval [CI] 1.001-2.170, P = 0.031), and in a male-only subset (IRR = 1.532, 95% CI 0.993-2.360, P = 0.053). Testosterone was also positively associated with clinically relevant coronary atherosclerosis (calcium >100 Agatston units) in the full sample (Odds Ratio [OR] = 1.984, 95% CI 1.202-3.275, P = 0.007) and when limited to male-only sample (OR = 2.032, 95% CI 1.118-4.816, P = 0.024). Individuals with coronary artery calcium >100 had 20% higher levels of testosterone than those with calcium <100 (t = -3.201, P = 0.007). Conclusions and Implications Among Tsimane, testosterone is positively associated with coronary artery calcium despite generally low normal testosterone levels, minimal atherosclerosis and rare cardiovascular disease (CVD) events. Associations between low testosterone and CVD events in industrialized populations are likely confounded by obesity and other lifestyle factors.
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Affiliation(s)
- Benjamin C Trumble
- Arizona State University, School of Human Evolution and Social Change, Center for Evolution and Medicine, Institute of Human Origins, Tempe, AZ, USA
| | - Jacob Negrey
- Arizona State University, School of Human Evolution and Social Change, Center for Evolution and Medicine, Institute of Human Origins, Tempe, AZ, USA
| | - Stephanie V Koebele
- Arizona State University, School of Human Evolution and Social Change, Center for Evolution and Medicine, Institute of Human Origins, Tempe, AZ, USA
| | - Randall C Thompson
- Saint Luke’s Mid America Heart Institute, Department of Cardiology, Kansas City, MO, USA
| | - L Samuel Wann
- University of New Mexico, School of Medicine, Albuquerque, NM, USA
| | - Adel H Allam
- Al Azhar University, School of Medicine, Cairo, Egypt
| | - Bret Beheim
- Max Planck Institute for Evolutionary Anthropology, Department of Human Behavior, Ecology and Culture, Leipzig, Germany
| | | | | | | | - David E Michalik
- University of California Irvine, School of Medicine, Irvine, CA, USA
- Miller Women’s and Children’s Hospital Long Beach, CA, USA
| | | | - Guido P Lombardi
- Universidad Peruana Cayetano Heredia, Laboratorio de Paleopatología, Lima, Peru
| | - Angela R Garcia
- Arizona State University, School of Human Evolution and Social Change, Center for Evolution and Medicine, Institute of Human Origins, Tempe, AZ, USA
| | | | - Edmond Seabright
- Mohammed VI Polytechnic University, School of Collective Intelligence, Ben Guerir, Morocco
| | - Sarah Alami
- Mohammed VI Polytechnic University, School of Collective Intelligence, Ben Guerir, Morocco
| | - Thomas S Kraft
- University of Utah, Anthropology Department, Salt Lake City, UT, USA
| | - Paul Hooper
- Chapman University, Economic Science Institute, Orange, CA, USA
| | - Kenneth Buetow
- Arizona State University, School of Human Evolution and Social Change, Center for Evolution and Medicine, Institute of Human Origins, Tempe, AZ, USA
| | - Andrei Irimia
- University of Southern California, Psychology Department, Los Angeles, CA, USA
| | - Margaret Gatz
- University of Southern California, Psychology Department, Los Angeles, CA, USA
| | - Jonathan Stieglitz
- Toulouse Scool of Economics, Institute for Advanced Study Toulouse, Toulouse, France
| | - Michael D Gurven
- University of California Santa Barbara, Department of Anthropology, Santa Barbara, CA, USA
| | - Hillard Kaplan
- Chapman University, Economic Science Institute, Orange, CA, USA
| | - Gregory S Thomas
- MemorialCare Health System, Fountain Valley, CA, USA
- University of California Irvine, Division of Cardiology, Orange, CA, USA
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del-Cuerpo I, Jerez-Mayorga D, Chirosa-Ríos LJ, Morenas-Aguilar MD, Mariscal-Arcas M, López-Moro A, Delgado-Floody P. Males Have a Higher Energy Expenditure than Females during Squat Training. Nutrients 2023; 15:3455. [PMID: 37571392 PMCID: PMC10421381 DOI: 10.3390/nu15153455] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 07/17/2023] [Accepted: 07/21/2023] [Indexed: 08/13/2023] Open
Abstract
The main objective of this study was to determine the differences in energy expenditure (EE) according to sex during and after two different squat training protocols in a group of healthy young adults. Twenty-nine Sports Sciences students volunteered to participate in this study. They attended the laboratory on four different days and completed four sessions: two sessions with 3 sets of 12 repetitions at 75% of their one-repetition maximum (RM) and two sessions with 3 sets of 30 repetitions at 50% of their 1RM. Energy expenditure was evaluated using an indirect calorimeter. Males consistently demonstrated higher EE in all sessions and intensities. The linear regression model identified a significant association between sex, BMI, and total EE across all sessions and intensities. In conclusion, males exhibited higher EE in both protocols (50% and 75% of 1RM) throughout all sessions. Furthermore, sex and BMI were found to influence EE in healthy young adults. Therefore, coaches should consider sex when assessing EE, as the metabolic response differs between males and females.
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Affiliation(s)
- Indya del-Cuerpo
- Department of Physical Education and Sports, Faculty of Sports Sciences, University of Granada, 18071 Granada, Spain; (I.d.-C.); (D.J.-M.); (L.J.C.-R.); (M.D.M.-A.)
- Strength & Conditioning Laboratory, CTS-642 Research Group, Department Physical Education and Sports, Faculty of Sports Sciences, University of Granada, 18071 Granada, Spain
| | - Daniel Jerez-Mayorga
- Department of Physical Education and Sports, Faculty of Sports Sciences, University of Granada, 18071 Granada, Spain; (I.d.-C.); (D.J.-M.); (L.J.C.-R.); (M.D.M.-A.)
- Strength & Conditioning Laboratory, CTS-642 Research Group, Department Physical Education and Sports, Faculty of Sports Sciences, University of Granada, 18071 Granada, Spain
- Exercise and Rehabilitation Sciences Institute, School of Physical Therapy, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago 7591538, Chile
| | - Luis Javier Chirosa-Ríos
- Department of Physical Education and Sports, Faculty of Sports Sciences, University of Granada, 18071 Granada, Spain; (I.d.-C.); (D.J.-M.); (L.J.C.-R.); (M.D.M.-A.)
- Strength & Conditioning Laboratory, CTS-642 Research Group, Department Physical Education and Sports, Faculty of Sports Sciences, University of Granada, 18071 Granada, Spain
| | - María Dolores Morenas-Aguilar
- Department of Physical Education and Sports, Faculty of Sports Sciences, University of Granada, 18071 Granada, Spain; (I.d.-C.); (D.J.-M.); (L.J.C.-R.); (M.D.M.-A.)
- Strength & Conditioning Laboratory, CTS-642 Research Group, Department Physical Education and Sports, Faculty of Sports Sciences, University of Granada, 18071 Granada, Spain
| | - Miguel Mariscal-Arcas
- Department of Nutrition and Food Science, School of Pharmacy, University of Granada, 18071 Granada, Spain; (M.M.-A.); (A.L.-M.)
- Instituto de Investigación Biosanitaria de Granada (ibs. GRANADA), 18071 Granada, Spain
| | - Alejandro López-Moro
- Department of Nutrition and Food Science, School of Pharmacy, University of Granada, 18071 Granada, Spain; (M.M.-A.); (A.L.-M.)
| | - Pedro Delgado-Floody
- Department of Physical Education and Sports, Faculty of Sports Sciences, University of Granada, 18071 Granada, Spain; (I.d.-C.); (D.J.-M.); (L.J.C.-R.); (M.D.M.-A.)
- Department of Physical Education, Sports and Recreation, Universidad de La Frontera, Temuco 4811230, Chile
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