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Kember AJ, Anderson JL, House SC, Reuter DG, Goergen CJ, Hobson SR. Impact of maternal posture on fetal physiology in human pregnancy: a narrative review. Front Physiol 2024; 15:1394707. [PMID: 38827993 PMCID: PMC11140392 DOI: 10.3389/fphys.2024.1394707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 04/24/2024] [Indexed: 06/05/2024] Open
Abstract
In numerous medical conditions, including pregnancy, gravity and posture interact to impact physiology and pathophysiology. Recent investigations, for example, pertaining to maternal sleeping posture during the third trimester and possible impact on fetal growth and stillbirth risk highlight the importance and potential clinical implications of the subject. In this review, we provide an extensive discussion of the impact of maternal posture on fetal physiology from conception to the postpartum period in human pregnancy. We conducted a systematic literature search of the MEDLINE database and identified 242 studies from 1991 through 2021, inclusive, that met our inclusion criteria. Herein, we provide a synthesis of the resulting literature. In the first section of the review, we group the results by the impact of maternal posture at rest on the cervix, uterus, placenta, umbilical cord, amniotic fluid, and fetus. In the second section of the review, we address the impact on fetal-related outcomes of maternal posture during various maternal activities (e.g., sleep, work, exercise), medical procedures (e.g., fertility, imaging, surgery), and labor and birth. We present the published literature, highlight gaps and discrepancies, and suggest future research opportunities and clinical practice changes. In sum, we anticipate that this review will shed light on the impact of maternal posture on fetal physiology in a manner that lends utility to researchers and clinicians who are working to improve maternal, fetal, and child health.
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Affiliation(s)
- Allan J. Kember
- Temerty Faculty of Medicine, Department of Obstetrics and Gynaecology, University of Toronto, Toronto, ON, Canada
- Shiphrah Biomedical Inc., Toronto, ON, Canada
| | - Jennifer L. Anderson
- Larner College of Medicine, University of Vermont, Burlington, VT, United States
| | - Sarah C. House
- Temerty Faculty of Medicine, Medical Education, University of Toronto, Toronto, ON, Canada
| | - David G. Reuter
- Cardiac Innovations, Seattle Children’s Hospital, Seattle, WA, United States
| | - Craig J. Goergen
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, United States
| | - Sebastian R. Hobson
- Temerty Faculty of Medicine, Department of Obstetrics and Gynaecology, University of Toronto, Toronto, ON, Canada
- Temerty Faculty of Medicine, Institute of Medical Science, University of Toronto, Toronto, ON, Canada
- Maternal-Fetal Medicine Division, Mount Sinai Hospital, Toronto, ON, Canada
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Preszler JA, McInnis KC, Baute L, Tanaka MJ. Rehabilitation of anterior knee pain in the pregnant athlete: Considerations and modifications by trimester. Phys Ther Sport 2023; 60:34-46. [PMID: 36641951 DOI: 10.1016/j.ptsp.2023.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 01/04/2023] [Accepted: 01/04/2023] [Indexed: 01/07/2023]
Abstract
BACKGROUND Anterior knee pain is a common symptom many females experience during pregnancy. There are several musculoskeletal changes that occur in anatomy and physiology throughout the course of pregnancy that impact the lower extremity kinetic chain. Pregnant athletes, recreational through competitive, who attempt to maintain a high activity level through each trimester may be at increased risk for anterior knee pain due to a greater demand for lumbopelvic and hip stabilization. CLINICAL QUESTION What are the evidence-driven rehabilitation guidelines and specific modifications needed to treat anterior knee pain in the female athlete during each trimester of pregnancy? KEY RESULTS We aim to provide an overview of rehabilitation treatment guidelines for pregnant females with anterior knee pain, presenting specific physiological changes and rationale for modifications, discussed by trimester. We recommend our program be conducted under the supervision of a physical therapist working closely with the athlete's obstetrics and sports medicine team. CLINICAL APPLICATION The number of women who are active during pregnancy is increasing. We provide an overview of the guidelines and considerations for treating women with anterior knee pain during a healthy and uneventful pregnancy.
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Affiliation(s)
- Jamie A Preszler
- Department of Sports Physical Therapy, Massachusetts General Hospital, Boston, MA, USA.
| | - Kelly C McInnis
- Division of Sports Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Lisa Baute
- Department of Obstetrics & Gynecology, Massachusetts General Hospital, Boston, MA, USA
| | - Miho J Tanaka
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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Shrestha A, Prowak M, Berlandi-Short VM, Garay J, Ramalingam L. Maternal Obesity: A Focus on Maternal Interventions to Improve Health of Offspring. Front Cardiovasc Med 2021; 8:696812. [PMID: 34368253 PMCID: PMC8333710 DOI: 10.3389/fcvm.2021.696812] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 06/07/2021] [Indexed: 12/13/2022] Open
Abstract
Maternal obesity has many implications for offspring health that persist throughout their lifespan that include obesity and cardiovascular complications. Several different factors contribute to obesity and they encompass interplay between genetics and environment. In the prenatal period, untreated obesity establishes a foundation for a myriad of symptoms and negative delivery experiences, including gestational hypertensive disorders, gestational diabetes, macrosomia, and labor complications. However, data across human and animal studies show promise that nutritional interventions and physical activity may rescue much of the adverse effects of obesity on offspring metabolic health. Further, these maternal interventions improve the health of the offspring by reducing weight gain, cardiovascular disorders, and improving glucose tolerance. Mechanisms from animal studies have also been proposed to elucidate the signaling pathways that regulate inflammation, lipid metabolism, and oxidative capacity of the tissue, ultimately providing potential specific courses of treatment. This review aims to pinpoint the risks of maternal obesity and provide plausible intervention strategies. We delve into recent research involving both animal and human studies with maternal interventions. With the increasing concerning of obesity rates witnessed in the United States, it is imperative to acknowledge the long-term effects posed on future generations and specifically modify maternal nutrition and care to mitigate these adverse outcomes.
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Affiliation(s)
- Akriti Shrestha
- Department of Nutrition and Food Studies, Syracuse University, Syracuse, NY, United States
| | - Madison Prowak
- Department of Nutrition and Food Studies, Syracuse University, Syracuse, NY, United States
| | | | - Jessica Garay
- Department of Nutrition and Food Studies, Syracuse University, Syracuse, NY, United States
| | - Latha Ramalingam
- Department of Nutrition and Food Studies, Syracuse University, Syracuse, NY, United States
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Meah VL, Strynadka MC, Steinback CD, Davenport MH. Cardiac Responses to Prenatal Resistance Exercise with and without the Valsalva Maneuver. Med Sci Sports Exerc 2021; 53:1260-1269. [PMID: 33394898 DOI: 10.1249/mss.0000000000002577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
PURPOSE Exercise guidelines recommend incorporating resistance exercise (RE) into a regular aerobic training program during pregnancy. However, few women do so because of uncertainties about the safety of prenatal RE, particularly regarding the Valsalva maneuver (VM). The aim of this study was to determine the acute cardiovascular responses to prenatal RE at different intensities, with and without VM. METHODS Healthy pregnant (n = 15; 22.9 ± 5.9 wk of gestation) and nonpregnant women (n = 15) were recruited. Maximal strength over 10 repetitions (10RM) for semireclined leg press was determined. Women underwent standardized assessments of cardiac structure, function and mechanics (echocardiography), heart rate (ECG), and blood pressure (photoplethysmography) at baseline, during RE at 20%, 40%, and 60% 10RM while free-breathing, and at 40% 10RM with VM. Significant differences were identified between subjects at baseline (independent t-tests), between and within subjects during free-breathing RE (general linear model, baseline as a covariate), and between and within subjects for 40% 10RM free-breathing versus VM (mixed-effects model). RESULTS Resting cardiac output, heart rate, and stroke volume were greater in pregnant women, without differences in blood pressure, ejection fraction, or cardiac mechanics. During free-breathing RE, pregnant women had a greater ejection fraction compared with nonpregnant women; however, all other hemodynamic variables were not different between groups. Cardiac mechanics during free-breathing RE across all intensities were not different between groups, with the exception that pregnant women had a lower apical circumferential strain that did not affect global cardiac function. No differences were observed between groups during 40% 10RM RE with and without VM. CONCLUSIONS Pregnant women have proportionate cardiac responses to light-moderate RE, both with and without the VM. These findings reinforce the safety of RE in healthy pregnancy.
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Affiliation(s)
- Victoria L Meah
- Program for Pregnancy and Postpartum Health, Physical Activity and Diabetes Laboratory, Faculty of Kinesiology, Sport, and Recreation, Women and Children's Health Research Institute, Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, CANADA
| | - Morgan C Strynadka
- Program for Pregnancy and Postpartum Health, Physical Activity and Diabetes Laboratory, Faculty of Kinesiology, Sport, and Recreation, Women and Children's Health Research Institute, Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, CANADA
| | - Craig D Steinback
- Neurovascular Health Lab, Faculty of Kinesiology, Sport, and Recreation, Neuroscience and Mental Health Institute, Women and Children's Health Research Institute, Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, CANADA
| | - Margie H Davenport
- Program for Pregnancy and Postpartum Health, Physical Activity and Diabetes Laboratory, Faculty of Kinesiology, Sport, and Recreation, Women and Children's Health Research Institute, Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, CANADA
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Meah VL, Backx K, Cockcroft JR, Shave RE, Stöhr EJ. Cardiac Responses to Submaximal Isometric Contraction and Aerobic Exercise in Healthy Pregnancy. Med Sci Sports Exerc 2021; 53:1010-1020. [PMID: 33148970 DOI: 10.1249/mss.0000000000002554] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE The increased physiological demand of pregnancy results in the profound adaptation of the maternal cardiovascular system, reflected by greater resting cardiac output and left ventricular (LV) deformation. Whether the increased resting demand alters acute cardiac responses to exercise in healthy pregnant women is not well understood. METHODS Healthy nonpregnant (n = 18), pregnant (n = 14, 22-26 wk gestation), and postpartum women (n = 13, 12-16 wk postdelivery) underwent assessments of cardiac function and LV mechanics at rest, during a sustained isometric forearm contraction (30% maximum), and during low-intensity (LOW) and moderate-intensity (MOD) dynamic cycling exercise (25% and 50% peak power output). Significant differences (α = 0.05) were determined using ANCOVA and general linear model (resting value included as covariate). RESULTS When accounting for higher resting cardiac output in pregnant women, pregnant women had greater cardiac output during isometric contraction (2.0 ± 0.3 L·min-1·m-1.83; nonpregnant, 1.3 ± 0.2 L·min-1·m-1.83; postpartum, 1.5 ± 0.5 L·min-1·m-1.83; P = 0.02) but similar values during dynamic cycling exercise (pregnant, LOW = 2.8 ± 0.4 L·min-1·m-1.83, MOD = 3.4 ± 0.7 L·min-1·m-1.83; nonpregnant, LOW = 2.4 ± 0.3 L·min-1·m-1.83, MOD = 3.0 ± 0.3 L·min-1·m-1.83; postpartum, LOW = 2.3 ± 0.4 L·min-1·m-1.83, MOD = 3.0 ± 0.5 L·min-1·m-1.83; P = 0.96). Basal circumferential strain was higher in pregnant women at rest, during the sustained isometric forearm contraction (-23.5% ± 1.2%; nonpregnant, -14.6% ± 1.4%; P = 0.001), and during dynamic cycling exercise (LOW = -27.0% ± 4.9%, MOD = -27.4% ± 4.6%; nonpregnant, LOW = -15.8% ± 4.5%, MOD = -15.2% ± 6.7%; P = 0.012); however, other parameters of LV mechanics were not different between groups. CONCLUSION The results support that the maternal heart can appropriately respond to additional cardiac demand and altered loading experienced during acute isometric and dynamic exercise, although subtle differences in responses to these challenges were observed. In addition, the LV mechanics that underpin global cardiac function are greater in pregnant women during exercise, leading to the speculation that the hormonal milieu of pregnancy influences regional deformation.
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Affiliation(s)
- Victoria L Meah
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, UNITED KINGDOM
| | - Karianne Backx
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, UNITED KINGDOM
| | - John R Cockcroft
- Division of Cardiology, Department of Medicine, Columbia University Irving Medical Center, New York, NY
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Ferrari N, Joisten C. Impact of physical activity on course and outcome of pregnancy from pre- to postnatal. Eur J Clin Nutr 2021; 75:1698-1709. [PMID: 33828239 PMCID: PMC8636258 DOI: 10.1038/s41430-021-00904-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 01/30/2021] [Accepted: 03/16/2021] [Indexed: 02/06/2023]
Abstract
A healthy lifestyle that includes physical activity has numerous positive effects on the mother and child during and after pregnancy. In this context physical activity plays a central role due to its influence on body composition. While visceral fatty tissue has a pro-inflammatory effect via so-called adipokines, myokines seem to have a more anti-inflammatory effect and thus prevent numerous diseases such as gestational hypertension or gestational diabetes. However, many women show a decreased level of physical activity during pregnancy when compared to pre-gestation levels. The reasons underlying this change are manifold and include concern about the effects of physical exertion on the unborn child. Gynaecologists and midwives are also often uncertain about what specific advice to give regarding physical activity. The present review describes, besides the underlying mechanisms, current physical activity recommendations and corresponding evidence with a focus on weight development in terms of obesity, gestational diabetes and foetal outcome.
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Affiliation(s)
- Nina Ferrari
- Cologne Centre for Prevention in Childhood and Youth/ Heart Centre Cologne, University Hospital of Cologne, Cologne, Germany. .,Department for physical activity in public health, Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany.
| | - Christine Joisten
- Cologne Centre for Prevention in Childhood and Youth/ Heart Centre Cologne, University Hospital of Cologne, Cologne, Germany.,Department for physical activity in public health, Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
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Gould S, Cawyer C, Dell'Italia L, Harper L, McGwin G, Bamman M. Resistance Training Does Not Decrease Placental Blood Flow During Valsalva Maneuver: A Novel Use of 3D Doppler Power Flow Ultrasonography. Sports Health 2021; 13:476-481. [PMID: 33709855 DOI: 10.1177/19417381211000717] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND The Valsalva maneuver may increase maternal blood pressure and intra-abdominal pressure, resulting in decreased blood flow to the fetus during resistance training. HYPOTHESIS There is no significant reduction in placental blood flow in pregnancy during resistance training in recreational athletes, as documented by a 3-dimensional power flow Doppler ultrasonography. STUDY DESIGN Cohort. LEVEL OF EVIDENCE Level 3. METHODS A cohort of healthy women who participated in recreational athletics was enrolled in a prospective study to assess placental blood flow during a resistance exercise. A 1 repetition maximum (1RM, up to 50 lb) was determined through a modified chest press as a marker of heavy resistance training. Three-dimensional volume measurements and power Doppler flow were determined at the rest phase and during the 1RM lift phase. The vascular flow index (VFI) was calculated to determine placental perfusion during each phase. RESULTS A total of 22 women participated. The mean age of participants was 31 years. Gestational age ranged from 13 to 28 weeks. Average 1RM weight lifted was 30 lb. Four women (18%) were able to lift 50 lb, the maximum weight that the study allowed. The remaining 18 women (82%) lifted their true 1RM. Mean VFI during lift phase was 2.185 compared with 2.071 at rest (P = 0.03). There was a slight mean increase in VFI during lift phase, 0.114 (95% CI 0.009-0.182) from 2.071 to 2.185 with lifting (P = 0.03). The 15 women who participated in structured exercise had a mean VFI at rest and during the lift phase of 2.031 and 2.203, respectively (P = 0.01). CONCLUSION Three-dimensional power flow Doppler imaging can guide resistance training during pregnancy to prevent fetal injury due to hypoperfusion. Resistance training up to an RM1 of 50 lb did not result in a significant reduction of placental blood flow from resting state in the study population. CLINICAL RELEVANCE This technique may be used to guide training parameters among pregnant athletes.
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Affiliation(s)
- Sara Gould
- Department of Orthopedics, Division of Sports Medicine, University of Alabama at Birmingham, Birmingham, Alabama.,Birmingham Veterans Affairs Medical Center, Birmingham, Alabama
| | - Chase Cawyer
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Louis Dell'Italia
- Birmingham Veterans Affairs Medical Center, Birmingham, Alabama.,Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, Alabama
| | - Lorie Harper
- Department of Women's Health, Division of Maternal Fetal Medicine, University of Texas at Austin, Austin, Texas
| | - Gerald McGwin
- Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham, Alabama
| | - Marcas Bamman
- Birmingham Veterans Affairs Medical Center, Birmingham, Alabama.,Department of Cell Development and Integrative Biology, University of Alabama at Birmingham, Birmingham, Alabama
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Michalek IM, Comte C, Desseauve D. Impact of maternal physical activity during an uncomplicated pregnancy on fetal and neonatal well-being parameters: a systematic review of the literature. Eur J Obstet Gynecol Reprod Biol 2020; 252:265-272. [PMID: 32634674 DOI: 10.1016/j.ejogrb.2020.06.061] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 06/24/2020] [Accepted: 06/26/2020] [Indexed: 11/25/2022]
Abstract
We carried a thorough systematic review of the contemporary literature regarding the impact of maternal physical activity during pregnancy on the fetal and neonatal well-being parameters. We searched systematically publications indexed in PubMed and ScienceDirect, according to the PRISMA protocol. Studies examining following fetal and neonatal well-being parameters were included: fetal heart rate, active fetal movements, Doppler assessment of the placental and fetal circulations, amniotic fluid index, Apgar score, and umbilical cord blood acid-basis analysis at delivery. Altogether, 73 studies were identified (pooled sample size n = 7867). Out of these, 42 pertained to acute and 31 pertained to chronic exposure to maternal physical activity. The majority of the identified studies reported a positive or neutral effect of maternal physical activity on the fetal heart rate, Doppler-derived umbilical and cerebral blood flow parameters, and Apgar score. The literature regarding uterine arteries Doppler assessment, fetal active movements, amniotic fluid index, and umbilical cord blood acid-base analysis at delivery is sparse and does not allow us to generalize the inferences. Maternal physical activity during physiological pregnancy is safe for fetal and neonatal well-being when practiced according to recommendations. There is a need for better quality studies concerning the subject.
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Affiliation(s)
- Irmina Maria Michalek
- Obstetric Research Lab, Women-Mother-Child Department, Lausanne University Hospital, Lausanne, Switzerland.
| | | | - David Desseauve
- Obstetric Research Lab, Women-Mother-Child Department, Lausanne University Hospital, Lausanne, Switzerland
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Bauer I, Hartkopf J, Kullmann S, Schleger F, Hallschmid M, Pauluschke-Fröhlich J, Fritsche A, Preissl H. Spotlight on the fetus: how physical activity during pregnancy influences fetal health: a narrative review. BMJ Open Sport Exerc Med 2020; 6:e000658. [PMID: 32206341 PMCID: PMC7078670 DOI: 10.1136/bmjsem-2019-000658] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/17/2020] [Indexed: 12/16/2022] Open
Abstract
Before and during pregnancy, women often aim to improve their lifestyle so as to provide a healthier environment for their developing child. It remains unresolved, however, as to whether physical activity (PA) during pregnancy poses a possible risk or whether it might even have beneficial effects on the developing child. There is increasing evidence that PA during pregnancy is indeed beneficial to maternal physiological and psychological health and that it is generally not detrimental to the fetal cardiovascular system and neuronal function in the developing child. This also led to international recommendations for PAs during pregnancy. In the current review, we aimed to comprehensively assess the evidence of beneficial and harmful effects of maternal PA, including high-performance sports, on fetal development. The different mental and body-based relaxation techniques presented here are frequently performed during pregnancy. We found a considerable number of studies addressing these issues. In general, neither low key, moderate maternal PA nor relaxation techniques were observed to have a harmful effect on the developing child. However, we identified some forms of PA which could have at least a transient unfavourable effect. Notably, the literature currently available does not provide enough evidence to enable us to make a general conclusive statement on this subject. This is due to the lack of longitudinal studies on the metabolic and cognitive effects of regular PA during pregnancy and the wide diversity of methods used. In particular, the kind of PA investigated in each study differed from study to study.
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Affiliation(s)
- Ilena Bauer
- Institute for Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich at the University of Tübingen/fMEG Center, Tübingen, Germany
- German Center for Diabetes Research (DZD e.V.), University of Tübingen, Tübingen, Germany
| | - Julia Hartkopf
- Institute for Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich at the University of Tübingen/fMEG Center, Tübingen, Germany
- German Center for Diabetes Research (DZD e.V.), University of Tübingen, Tübingen, Germany
| | - Stephanie Kullmann
- Institute for Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich at the University of Tübingen/fMEG Center, Tübingen, Germany
- German Center for Diabetes Research (DZD e.V.), University of Tübingen, Tübingen, Germany
- Department of Internal Medicine IV, Division of Endocrinology, Diabetology, and Nephrology, University Hospital Tübingen, Tübingen, Germany
| | - Franziska Schleger
- Institute for Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich at the University of Tübingen/fMEG Center, Tübingen, Germany
- German Center for Diabetes Research (DZD e.V.), University of Tübingen, Tübingen, Germany
| | - Manfred Hallschmid
- Institute for Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich at the University of Tübingen/fMEG Center, Tübingen, Germany
- German Center for Diabetes Research (DZD e.V.), University of Tübingen, Tübingen, Germany
- Institute of Medical Psychology and Behavioral Neurobiology, Eberhard Karls University Tübingen, Tübingen, Germany
| | | | - Andreas Fritsche
- Institute for Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich at the University of Tübingen/fMEG Center, Tübingen, Germany
- German Center for Diabetes Research (DZD e.V.), University of Tübingen, Tübingen, Germany
- Department of Internal Medicine IV, Division of Endocrinology, Diabetology, and Nephrology, University Hospital Tübingen, Tübingen, Germany
| | - Hubert Preissl
- Institute for Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich at the University of Tübingen/fMEG Center, Tübingen, Germany
- German Center for Diabetes Research (DZD e.V.), University of Tübingen, Tübingen, Germany
- Department of Internal Medicine IV, Division of Endocrinology, Diabetology, and Nephrology, University Hospital Tübingen, Tübingen, Germany
- Department of Pharmacy and Biochemistry, Institute of Pharmaceutical Sciences; Interfaculty Centre for Pharmacogenomics and Pharma Research, Eberhard Karls University Tübingen, Tübingen, Germany
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Skow RJ, Davenport MH, Mottola MF, Davies GA, Poitras VJ, Gray CE, Jaramillo Garcia A, Barrowman N, Meah VL, Slater LG, Adamo KB, Barakat R, Ruchat SM. Effects of prenatal exercise on fetal heart rate, umbilical and uterine blood flow: a systematic review and meta-analysis. Br J Sports Med 2018; 53:124-133. [PMID: 30337345 DOI: 10.1136/bjsports-2018-099822] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/11/2018] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To perform a systematic review and meta-analysis examining the influence of acute and chronic prenatal exercise on fetal heart rate (FHR) and umbilical and uterine blood flow metrics. DESIGN Systematic review with random-effects meta-analysis and meta-regression. DATA SOURCES Online databases were searched up to 6 January 2017. STUDY ELIGIBILITY CRITERIA Studies of all designs were included (except case studies) if published in English, Spanish or French, and contained information on the population (pregnant women without contraindication to exercise), intervention (subjective or objective measures of frequency, intensity, duration, volume or type of exercise, alone ["exercise-only"] or in combination with other intervention components [eg, dietary; "exercise + co-intervention"]), comparator (no exercise or different frequency, intensity, duration, volume and type of exercise) and outcomes (FHR, beats per minute (bpm); uterine and umbilical blood flow metrics (systolic:diastolic (S/D) ratio; Pulsatility Index (PI); Resistance Index (RI); blood flow, mL/min; and blood velocity, cm/s)). RESULTS 'Very low' to 'moderate' quality evidence from 91 unique studies (n=4641 women) were included. Overall, FHR increased during (mean difference (MD)=6.35bpm; 95% CI 2.30 to 10.41, I2=95%, p=0.002) and following acute exercise (MD=4.05; 95% CI 2.98 to 5.12, I2=83%, p<0.00001). The incidence of fetal bradycardia was low at rest and unchanged with acute exercise. There were no significant changes in umbilical or uterine S/D, PI, RI, blood flow or blood velocity during or following acute exercise sessions. Chronic exercise decreased resting FHR and the umbilical artery S/D, PI and RI at rest. CONCLUSION Acute and chronic prenatal exercise do not adversely impact FHR or uteroplacental blood flow metrics.
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Affiliation(s)
- Rachel J Skow
- Program for Pregnancy and Postpartum Health, Physical Activity and Diabetes Laboratory, Faculty of Kinesiology, Sport, and Recreation, Women and Children's Health Research Institute, Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Margie H Davenport
- Program for Pregnancy and Postpartum Health, Physical Activity and Diabetes Laboratory, Faculty of Kinesiology, Sport, and Recreation, Women and Children's Health Research Institute, Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Michelle F Mottola
- R. Samuel McLaughlin Foundation-Exercise and Pregnancy Laboratory, School of Kinesiology, Faculty of Health Sciences, Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, Children's Health Research Institute, The University of Western Ontario, London, Ontario, Canada
| | - Gregory A Davies
- Department of Obstetrics and Gynecology, Queen's University, Kingston, Ontario, Canada
| | | | - Casey E Gray
- Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | | | - Nick Barrowman
- Clinical Research Unit, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - Victoria L Meah
- Program for Pregnancy and Postpartum Health, Physical Activity and Diabetes Laboratory, Faculty of Kinesiology, Sport, and Recreation, Women and Children's Health Research Institute, Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Linda G Slater
- John W. Scott Health Sciences Library, University of Alberta, Edmonton, Alberta, Canada
| | - Kristi B Adamo
- School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
| | - Ruben Barakat
- Facultad de Ciencias de la Actividad Física y del Deporte-INEF, Universidad Politécnica de Madrid, Madrid, Spain
| | - Stephanie-May Ruchat
- Department of Human Kinetics, Université du Québec à Trois-Rivières, Trois-Rivieres, Quebec, Canada
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11
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Mottola MF, Nagpal TS, Bgeginski R, Davenport MH, Poitras VJ, Gray CE, Davies GA, Adamo KB, Slater LG, Barrowman N, Barakat R, Ruchat SM. Is supine exercise associated with adverse maternal and fetal outcomes? A systematic review. Br J Sports Med 2018; 53:82-89. [PMID: 30337348 DOI: 10.1136/bjsports-2018-099919] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/18/2018] [Indexed: 11/04/2022]
Abstract
OBJECTIVE Theoretical concerns regarding the supine position at rest due to the gravid uterus obstructing aorta and vena caval flow may impinge uterine blood flow (UBF) to the fetus and maternal venous return. DESIGN Systematic review. DATA SOURCES Online databases up to 11 December 2017. STUDY CRITERIA Eligible population (pregnant without contraindication to exercise), intervention (frequency, intensity, duration, volume or type of supine exercise), comparator (no exercise or exercise in left lateral rest position, upright posture or other supine exercise), outcomes (potentially adverse effects on maternal blood pressure, cardiac output, heart rate, oxygen saturation, fetal movements, UBF, fetal heart rate (FHR) patterns; adverse events such as bradycardia, low birth weight, intrauterine growth restriction, perinatal mortality and other adverse events as documented by study authors), and study design (except case studies and reviews) published in English, Spanish, French or Portuguese. RESULTS Seven studies (n=1759) were included. 'Very low' to 'low' quality evidence from three randomised controlled trials indicated no association between supervised exercise interventions that included supine exercise and low birth weight compared with no exercise. There was 'very low' to 'low' quality evidence from four observational studies that showed no adverse events in the mother; however, there were abnormal FHR patterns (as defined by study authors) in 20 of 65 (31%) fetuses during an acute bout of supine exercise. UBF decreased (13%) when women moved from left lateral rest to acute dynamic supine exercise. CONCLUSION There was insufficient evidence to ascertain whether maternal exercise in the supine position is safe or should be avoided during pregnancy.
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Affiliation(s)
- Michelle F Mottola
- R Samuel McLaughlin Foundation- Exercise and Pregnancy Laboratory, School of Kinesiology, Faculty of Health Sciences, The University of Western Ontario, London, Ontario, Canada.,Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, Children's Health Research Institute, The University of Western Ontario, London, Ontario, Canada
| | - Taniya S Nagpal
- R Samuel McLaughlin Foundation- Exercise and Pregnancy Laboratory, School of Kinesiology, Faculty of Health Sciences, The University of Western Ontario, London, Ontario, Canada
| | - Roberta Bgeginski
- Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Margie H Davenport
- Program for Pregnancy and Postpartum Health, Faculty of Kinesiology, Sport, and Recreation, Women and Children's Health Research Institute, Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada
| | | | - Casey E Gray
- Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - Gregory A Davies
- Department of Obstetrics and Gynecology, Queen's University, Kingston, Ontario, Canada
| | - Kristi B Adamo
- School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
| | - Linda G Slater
- John W Scott Health Sciences Library, University of Alberta, Edmonton, Alberta, Canada
| | - Nick Barrowman
- Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - Ruben Barakat
- Facultad de Ciencias de la Actividad Física y del Deporte-INEF, Universidad Politécnica de Madrid, Madrid, Spain
| | - Stephanie-May Ruchat
- Department of Human Kinetics, Université du Québec à Trois-Rivières, Trois-Rivieres, Quebec, Canada
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Solli GS, Sandbakk Ø. Training Characteristics During Pregnancy and Postpartum in the World's Most Successful Cross Country Skier. Front Physiol 2018; 9:595. [PMID: 29875693 PMCID: PMC5974210 DOI: 10.3389/fphys.2018.00595] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 05/02/2018] [Indexed: 11/13/2022] Open
Abstract
This case-study investigated the training characteristics, physiological capacity, and body composition of the world's most successful cross country skier during the 40-week pregnancy, and the 61-week postpartum. Training data was systemized by training form (endurance, strength, and speed), intensity [low- (LIT), moderate- (MIT), and high-intensity training (HIT)], and mode (running, cycling, and skiing/roller skiing). The training volume [mean ± standard deviation (median)] during pregnancy was 12.9 ± 7.3(10.0) h/week in the first- (weeks 1-12), 18.3 ± 2.9(18.0) h/week in the second- (weeks 13-28), and 8.8 ± 4.4(9.6) h/week in the third trimester (weeks 29-40). Endurance training time was distributed into 10.9 ± 6.2(9.9), 15.2 ± 2.3(15.6), and 7.6 ± 3.8(7.9) LIT and 0.4 ± 0.5(0.0), 1.3 ± 0.4(1.4), and 0.7 ± 0.6(0.8) h/week MIT during the three trimesters. Only 2.2 h of HIT was performed during the entire pregnancy. During the first two trimesters, the distribution of exercise modes were approximately the same as pre-pregnancy, but the amount of running was reduced during the third trimester. Training volume during the postpartum periods 1-4 was 6.6 ± 3.8(7.1) (PP1; weeks 1-6), 14.1 ± 3.4(14.3) (PP2; weeks 7-12), 10.6 ± 3.8(10.4) (PP3; weeks 13-18), and 13.6 ± 4.1(14.5) h/week (PP4; weeks 19-24), respectively. Training during PP3 and PP4 was interfered with two fractions in the sacrum, leading to decreased amount of running and MIT/HIT, compensated by increased amounts of cycling. Thereafter, training volume progressively approached the pre-pregnancy values, being 18.0 ± 3.9(18.7) h/week during the general preparation- (weeks 25-44), 17.6 ± 4.4(17.3) h/week during the specific preparation- (weeks 45-53), and 16.9 ± 3.5(17.2) h/week during the competition period (CP; weeks 54-61) leading up to the subsequent world championship. The oxygen uptake at the estimated lactate threshold (LT) decreased to 90% of pre-pregnancy values in the second trimester, but remained to ∼100% in PP3. Body weight and fat-% was higher, while lean body mass and bone mineral density was lower after delivery compared to pre-pregnancy. These measurements gradually changed and were back to ∼pre-pregnancy values during CP. This study indicates that high-level cross country skiers can tolerate high training loads during pregnancy. Although the participant had some postpartum setbacks in her training due to fractures in the sacrum, reduced overall training load, followed by a slower progression and utilization of alternative exercise modes, led to a successful return to competitions.
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Affiliation(s)
- Guro S Solli
- Department of Sports Science and Physical Education, Nord University, Bodø, Norway.,Department of Neuromedicine and Movement Science, Centre for Elite Sports Research, Norwegian University of Science and Technology, Trondheim, Norway
| | - Øyvind Sandbakk
- Department of Neuromedicine and Movement Science, Centre for Elite Sports Research, Norwegian University of Science and Technology, Trondheim, Norway
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Davies GAL, Wolfe LA, Mottola MF, MacKinnon C. N o 129-L'exercice physique pendant la grossesse et le postpartum. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2018; 40:e66-e73. [PMID: 29447727 DOI: 10.1016/j.jogc.2017.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIF Énoncer une directive canadienne visant à informer les fournisseurs de soins obstétricaux des répercussions, pour la mère, le fœtus et le nouveau-né, des exercices de conditionnement aerobique et musculaire pendant la grossesse. RéSULTATS ATTENDUS: Effets sur la morbidité maternelle, fœtale et néonatale et mesures de la forme physique maternelle. PREUVES Une recherche sur MEDLINE des articles, publiés en anglais de 1966 à 2002, appartenant aux catégories suivantes : études sur le conditionnement aérobique et musculaire chez des femmes ne faisant pas jusque-là d'exercice et chez des femmes actives avant leur grossesse, ainsi que des études sur les répercussions du conditionnement aérobique et musculaire sur les issues précoces et tardives de la grossesse ou sur les issues néonatales; rapports de synthèse et méta-analyses portant sur l'exercice pendant la grossesse. VALEURS Les résultats recueillis ont été revus par la Société des obstétriciens et gynécologues du Canada (Comité de la pratique clinique - obstétrique), avec la participation de la Société canadienne de physiologie de l'exercice, et ils ont été classés suivant les critères d'évaluation des preuves établis par le Groupe de travail canadien sur l'examen de santé périodique. RECOMMANDATIONS VALIDATION: Cette directive a été approuvée par le Comité de pratique clinique - obstétrique de la SOGC, par le Comité exécutif et par le Conseil de la SOGC, ainsi que par le Conseil d'administration de la Société canadienne de physiologie de l'exercice. PARRAINé PAR: la Société des obstétriciens et gynécologues du Canada et par la Société canadienne de physiologie de l'exercice.
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No. 129-Exercise in Pregnancy and the Postpartum Period. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2018; 40:e58-e65. [DOI: 10.1016/j.jogc.2017.11.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Bø K, Artal R, Barakat R, Brown W, Davies GAL, Dooley M, Evenson KR, Haakstad LAH, Henriksson-Larsen K, Kayser B, Kinnunen TI, Mottola MF, Nygaard I, van Poppel M, Stuge B, Khan KM. Exercise and pregnancy in recreational and elite athletes: 2016 evidence summary from the IOC expert group meeting, Lausanne. Part 1-exercise in women planning pregnancy and those who are pregnant. Br J Sports Med 2017; 50:571-89. [PMID: 27127296 DOI: 10.1136/bjsports-2016-096218] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/10/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Kari Bø
- Norwegian School of Sport Sciences, Oslo, Norway
| | - Raul Artal
- Department of Obstetrics/Gynecology and Women's Health, Saint Louis University, St Louis, Missouri, USA
| | - Ruben Barakat
- Facultad de Ciencias de la Actividad Física y del Deporte-INEF, Universidad Politécnica de Madrid, Madrid, Spain
| | - Wendy Brown
- Centre for Research on Exercise, School of Human Movement and Nutrition Sciences, University of Queensland, St Lucia, Queensland, Australia
| | - Gregory A L Davies
- Department of Maternal-Fetal Medicine, Queens University, Kingston, Ontario, Canada
| | - Michael Dooley
- The Poundbury Clinic Dorchester-The Poundbury Suite, King Edward VII Hospital London, London, UK
| | - Kelly R Evenson
- University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA Department of Epidemiology, Gillings School of Global Public Health, Chapel Hill, North Carolina, USA
| | - Lene A H Haakstad
- Department of Sport Sciences, Norwegian School of Sport Sciences, Oslo, Norway
| | | | - Bengt Kayser
- Faculty of Biology and Medicine, Institute of Sports Science, University of Lausanne, Lausanne, Switzerland
| | - Tarja I Kinnunen
- University Lecturer, School of Health Sciences, University of Tampere, Tampere, Finland Department of Children, Young People and Families, The National Institute for Health and Welfare, Helsinki, Finland
| | - Michelle F Mottola
- R Samuel McLaughlin Foundation-Exercise and Pregnancy Lab, The University of Western Ontario London, London, Ontario, Canada
| | - Ingrid Nygaard
- Department of Obstetrics and Gynecology, University of Utah, Salt Lake City, Utah, USA
| | | | - Britt Stuge
- Oslo University Hospital, Ullevål, Oslo, Norway
| | - Karim M Khan
- Department of Family Practice & Centre for Hip Health and Mobility, University of British Columbia, Vancouver, British Columbia, Canada
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Abstract
Although the physiology of the heart and vascular system has not changed, there are many things we have learned and are still learning today. Research related to heart adaptations during pregnancy has been performed since the 1930s. Since the mid-1950s, researchers began to look at changes in the maternal cardiovascular system during exercise while pregnant. Research related to exercise during pregnancy and offspring heart development began and has continued since the 1970s. We will review the normal female cardiovascular system adaptations to pregnancy in general. Additionally, topics related to maternal cardiac adaptations to pregnancy during acute exercise, as well as the chronic conditioning response from exercise training will be explored. Since physical activity during pregnancy influences fetal development, the fetal cardiac development will be discussed in regards to acute and chronic maternal exercise. Similarly, the influence of various types of maternal exercise on acute and chronic fetal heart responses will be described. Briefly, the topics related to how and if there is maternal-fetal synchrony will be explained. Lastly, the developmental changes of the fetal cardiovascular system that persist after birth will be explored. Overall, the article will discuss maternal cardiac physiology related to changes with normal pregnancy, and exercise during pregnancy, as well as fetal cardiac physiology related to changes with normal development, and exercise during pregnancy as well as developmental changes in offspring after birth.
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Affiliation(s)
- Linda May
- Assistant Professor, Foundational Sciences and Research, East Carolina University, Greenville, NC
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May LE, Allen JJB, Gustafson KM. Fetal and maternal cardiac responses to physical activity and exercise during pregnancy. Early Hum Dev 2016; 94:49-52. [PMID: 26805461 DOI: 10.1016/j.earlhumdev.2016.01.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 01/07/2016] [Indexed: 12/16/2022]
Abstract
Since the 1970s, researchers have studied the influence of exercise during pregnancy on offspring heart development. With the knowledge and current evidence of fetal programming effects, research has demonstrated that exercise is safe and beneficial for mother, fetus, and neonate. Predominantly, research has focused on maternal and fetal cardiac adaptations related to aerobic exercise during pregnancy; less is known regarding the effects of resistance or combination (aerobic and resistance) training during pregnancy. Ongoing research is focusing on fetal responses to different intensity, duration and modes of maternal exercise throughout pregnancy. This article will summarize our current state of knowledge regarding the influence of exercise intensity, duration, and modes during pregnancy on maternal and fetal cardiac responses.
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Affiliation(s)
- Linda E May
- Foundational Sciences and Research, East Carolina University, 1851 MacGregor Downs Rd, Greenville, NC 27834, USA.
| | - John J B Allen
- Department of Psychology, University of Arizona, P.O. Box 210068, Tucson, AZ 85721-0068, USA.
| | - Kathleen M Gustafson
- Hoglund Brain Imaging Center, University of Kansas Medical Center, 3901 Rainbow Blvd., Kansas City, KS, USA.
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Moyer C, Livingston J, Fang X, May LE. Influence of exercise mode on pregnancy outcomes: ENHANCED by Mom project. BMC Pregnancy Childbirth 2015; 15:133. [PMID: 26055756 PMCID: PMC4460928 DOI: 10.1186/s12884-015-0556-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 05/13/2015] [Indexed: 12/16/2022] Open
Abstract
Background The extent of the benefits of exercise training during pregnancy on maternal, fetal, and neonatal health outcomes has not been sufficiently addressed. While aerobic exercise training has been determined as safe and efficacious throughout pregnancy, the effects of other training modes on fetal health and development as well as any continued benefits for the neonate, especially with regards to cardiovascular development and function, is largely unknown. In the ENHANCED by Mom study we aim to determine the effects of different modes of exercise training (aerobic, circuit, and resistance) throughout pregnancy on childhood health by controlling individual exercise programs and assessing the effects of each on fetal and neonatal health adaptations. Methods/Design ENHANCED by mom is a cross sectional comparison study utilizing 3 intervention groups in comparison to a control group. Participants will complete three 5 min warmup + 45 min sessions weekly from 16 weeks to 36 weeks gestation of aerobic, resistance, or circuit training, in comparison to non-exercising controls. Maternal physical measurements will occur every 4 weeks throughout the intervention period. Fetal morphometric and heart measurements will occur at 34 weeks gestation. Neonatal measurements will be acquired at birth and at 1 month, 6 months, and 12 months. Discussion A better understanding on the effects of exercise training during pregnancy on fetal and neonatal health could have a profound impact on the prevention and development of chronic diseases such as obesity, hypertension, and diabetes.
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Affiliation(s)
- Carmen Moyer
- Department of Kinesiology, East Carolina University (ECU), Greenville, NC 27834, USA.
| | - Jeffrey Livingston
- Department of Obstetrics and Gynecology, ECU, Greenville, NC 27834, USA.
| | - Xiangming Fang
- Department of Biostatistics, ECU, Greenville, NC 27834, USA.
| | - Linda E May
- Department of Foundational Sciences and Research, ECU, 1851 MacGregor Downs Rd, MS#701, Greenville, NC 27834, USA.
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Bgeginski R, Almada BP, Martins Kruel LF. Cardiorespiratory Responses of Pregnant and Nonpregnant Women During Resistance Exercise. J Strength Cond Res 2015; 29:596-603. [DOI: 10.1519/jsc.0000000000000671] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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MAY LINDAE, SUMINSKI RICHARDR, LANGAKER MICHELLED, YEH HUNGWEN, GUSTAFSON KATHLEENM. Regular Maternal Exercise Dose and Fetal Heart Outcome. Med Sci Sports Exerc 2012; 44:1252-8. [DOI: 10.1249/mss.0b013e318247b324] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Piper TJ, Jacobs E, Haiduke M, Waller M, McMillan C. Core Training Exercise Selection During Pregnancy. Strength Cond J 2012. [DOI: 10.1519/ssc.0b013e318232c412] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Mottola MF. Exercise prescription for overweight and obese women: pregnancy and postpartum. Obstet Gynecol Clin North Am 2009; 36:301-16, viii. [PMID: 19501315 DOI: 10.1016/j.ogc.2009.03.005] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Once a low-risk pregnancy has been established, walking in combination with nutritional control may be effective in preventing excessive weight gain in overweight and obese women. Maternal exercise prescription should use the Frequency, Intensity, Time spent and Type of exercise principle, with a frequency of three to four sessions per week as ideal. Intensity based on a target heart-rate zone of 110 to 131 beats per minute for women 20 to 29 years of age and 108 to 127 beats per minute for women 30 to 39 years of age, coupled with use of the rating of perceived exertion scale and the "Talk Test" is suggested. Dieting and exercise together are most effective in reducing weight retention after childbirth and compliance may be improved by incorporating child-care and children into the exercise routine. After medical consultation, postpartum women should begin exercise slowly, starting from 15 minutes, and building to at least 150 minutes of aerobic activity per week, with this activity spread throughout the week.
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Affiliation(s)
- Michelle F Mottola
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, London, Ontario, Canada N6A 3K7.
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Helmreich RJ, Hundley V, Varvel P. The effect of obesity on heart rate (heart period) and physiologic parameters during pregnancy. Biol Res Nurs 2008; 10:63-78. [PMID: 18647761 DOI: 10.1177/1099800408321077] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Obesity and excess gestational weight gain (EGWG) in pregnancy increase the risk for adverse maternal and infant outcomes. Along with careful monitoring of weight gain during pregnancy, early identification of a maladaptive response to the changes of pregnancy may help to avoid adverse outcomes. Simple physiologic markers such as resting heart rate (HR), heart period (HP), and blood pressure (BP) may be powerful predictors of cardiovascular adaptation to pregnancy. This article summarizes the current state of the science regarding the effect of obesity (body mass index [BMI] > or =30 kg/m(2)) and EGWG in pregnant women at rest in laboratory settings. The impact of differences in weight gain (kg and BMI) on pregnancy outcomes is also examined. A search was conducted for articles published from 1985 to 2006 reporting data on body weight and HR or HP at rest from randomized controlled trials or controlled trials conducted in laboratory settings involving pregnant women at low or high risk for adverse pregnancy outcomes who were obese or had EGWG. A meta-analysis was conducted on the 23 studies meeting inclusion criteria to explore the relation of BMI to HR, HP, and physiologic parameters. Autonomic responsiveness was found to be diminished in obese women with a BMI > 30 kg/m(2) and in women with high risk for adverse pregnancy outcomes, which may indicate a maladaptive autonomic response that is imbalanced and disorganized and that reduces adaptation to environmental demands.
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Roth A, Elkayam U. Acute myocardial infarction associated with pregnancy. J Am Coll Cardiol 2008; 52:171-80. [PMID: 18617065 DOI: 10.1016/j.jacc.2008.03.049] [Citation(s) in RCA: 181] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2008] [Revised: 03/11/2008] [Accepted: 03/18/2008] [Indexed: 01/30/2023]
Abstract
Acute myocardial infarction (AMI) during pregnancy or the early post-partum period is rare but has been shown to be associated with poor maternal as well as fetal outcome. Major changes in both diagnosis and treatment of AMI in the nonpregnant patient have lead to improved outcome which may also affect pregnant patients. The purpose of this paper is to review available information related to the pathophysiology and clinical profile and provide recommendations for the diagnosis and management of AMI occuring during pregnancy and the early post-partum period.
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Affiliation(s)
- Arie Roth
- Department of Cardiology Tel Aviv Sourasky Medical Center, Tel Aviv University Sackler School of Medicine, Tel Aviv, Israel
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Downs DS, Hausenblas HA. Pregnant women's third trimester exercise behaviors, body mass index, and pregnancy outcomes. Psychol Health 2007. [DOI: 10.1080/14768320701372018] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
Prenatal maternal stress has been found to have long-lasting effects on the behavioral and physiological development of the offspring. These programming effects on the fetus would be physiologically mediated through heightened and/or abnormal activity of the maternal sympathetic-adrenal-medullary system (SAM) and especially of her hypothalamic-pituitary-adrenocortical axis (HPA-axis). The abnormalities in maternal physiology could be present in her basal functioning, but also in her physiological reactivity to stressors, which constitutes the topic of this paper. This article reviews studies that have used laboratory challenges to study physiological stress reactivity in pregnant women. It concentrates on stress tests designed to produce pain or discomfort, or cognitive and psychological stress, and that assess changes in blood pressure, heart rate and/or cortisol as reactivity measures. The general conclusion is that physiological stress reactivity appears to be dampened during pregnancy. Nonetheless, the physiological responses to laboratory challenges are clearly present and display enough inter-individual variability to enable the study of links between responsivity patterns, psychosocial variables, fetal behavior, pregnancy outcome and offspring development. This paper also looks into the methodological limitations present in the reviewed studies. Options for sound design of stress test protocols are discussed and recommendations for future studies are presented. These methodological points are general and can therefore also be of use for researchers studying human stress reactivity in other populations and ages.
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Affiliation(s)
- Carolina de Weerth
- Department of Psychiatry, University Medical Center Nijmegen, HP 333, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands.
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Davies GAL, Wolfe LA, Mottola MF, MacKinnon C. Joint SOGC/CSEP Clinical Practice Guideline: Exercise in Pregnancy and the Postpartum Period. ACTA ACUST UNITED AC 2003. [DOI: 10.1139/h03-024] [Citation(s) in RCA: 256] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Objective: To design Canadian guidelines advising obstetric care providers of the maternal, fetal, and neonatal implications of aerobic and strength-conditioning exercises in pregnancy. Outcomes: Knowledge of the impact of exercise on maternal, fetal, and neonatal morbidity, and of the maternal measures of fitness. Evidence: MEDLINE search from 1966 to 2002 for English-language articles related to studies of maternal aerobic and strength conditioning in a previously sedentary population, maternal aerobic and strength conditioning in a previously active population, impact of aerobic and strength conditioning on early and late pregnancy outcomes, impact of aerobic and strength conditioning on neonatal outcomes, as well as for review articles and meta-analyses related to exercise in pregnancy. Values: The evidence collected was reviewed by the Society of Obstetricians and Gynaecologists of Canada (SOGC Clinical Practice Obstetrics Committee) with representation from the Canadian Society for Exercise Physiology, and quantified using the evaluation of evidence guidelines developed by the Canadian Task Force on the Periodic Health Exam.Recommendations:1. All women without contraindications should be encouraged to participate in aerobic and strength-conditioning exercises as part of a healthy lifestyle during their pregnancy. (II-1,2B)2. Reasonable goals of aerobic conditioning in pregnancy should be to maintain a good fitness level throughout pregnancy without trying to reach peak fitness or train for an athletic competition. (II-1,2C)3. Women should choose activities that will minimize the risk of loss of balance and fetal trauma. (III-C)4. Women should be advised that adverse pregnancy or neonatal outcomes are not increased for exercising women. (II-1,2B)5. Initiation of pelvic floor exercises in the immediate postpartum period may reduce the risk of future urinary incontinence. (II-1C)6. Women should be advised that moderate exercise during lactation does not affect the quantity or composition of breast milk or impact infant growth. (I-A)Validation: This guideline has been approved by the SOGC Clinical Practice Obstetrics Committee, the Executive and Council of SOGC, and the Board of Directors of the Canadian Society for Exercise Physiology. Sponsors: This guideline has been jointly sponsored by the Society of Obstetricians and Gynaecologists of Canada and the Canadian Society for Exercise Physiology. Key words: fetus, neonate, outcomes, aerobic, strength
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Affiliation(s)
- Larry A Wolfe
- School of Physical and Health Education, Department of Obstetrics and Gynaecology, Queen's University, Kingston, Ontario, Canada.
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Davies GAL, Wolfe LA, Mottola MF, MacKinnon C, Arsenault MY, Bartellas E, Cargill Y, Gleason T, Iglesias S, Klein M, Martel MJ, Roggensack A, Wilson K, Gardiner P, Graham T, Haennel R, Hughson R, MacDougall D, McDermott J, Ross R, Tiidus P, Trudeau F. Exercise in pregnancy and the postpartum period. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2003; 25:516-29. [PMID: 12806453 DOI: 10.1016/s1701-2163(16)30313-9] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To design Canadian guidelines advising obstetric care providers of the maternal, fetal, and neonatal implications of aerobic and strength-conditioning exercises in pregnancy. OUTCOMES Knowledge of the impact of exercise on maternal, fetal, and neonatal morbidity, and of the maternal measures of fitness. EVIDENCE MEDLINE search from 1966 to 2002 for English-language articles related to studies of maternal aerobic and strength conditioning in a previously sedentary population, maternal aerobic and strength conditioning in a previously active population, impact of aerobic and strength conditioning on early and late pregnancy outcomes, and impact of aerobic and strength conditioning on neonatal outcomes, as well as for review articles and meta-analyses related to exercise in pregnancy. VALUES The evidence collected was reviewed by the Society of Obstetricians and Gynaecologists of Canada (SOGC Clinical Practice Obstetrics Committee) with representation from the Canadian Society for Exercise Physiology, and quantified using the evaluation of evidence guidelines developed by the Canadian Task Force on the Periodic Health Exam. RECOMMENDATIONS 1. All women without contraindications should be encouraged to participate in aerobic and strength-conditioning exercises as part of a healthy lifestyle during their pregnancy. (II-1,2B) 2. Reasonable goals of aerobic conditioning in pregnancy should be to maintain a good fitness level throughout pregnancy without trying to reach peak fitness or train for an athletic competition. (II-1,2C) 3. Women should choose activities that will minimize the risk of loss of balance and fetal trauma. (III-C) 4. Women should be advised that adverse pregnancy or neonatal outcomes are not increased for exercising women. (II-1,2B) 5. Initiation of pelvic floor exercises in the immediate postpartum period may reduce the risk of future urinary incontinence. (II-1C) 6. Women should be advised that moderate exercise during lactation does not affect the quantity or composition of breast milk or impact infant growth. (I-A) VALIDATION: This guideline has been approved by the SOGC Clinical Practice Obstetrics Committee, the Executive and Council of SOGC, and the Board of Directors of the Canadian Society for Exercise Physiology. SPONSORS This guideline has been jointly sponsored by the Society of Obstetricians and Gynaecologists of Canada and the Canadian Society for Exercise Physiology.
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Abstract
There are numerous benefits to pregnant women of remaining active during pregnancy. These include improved weight control and maintenance of fitness. There may also be benefits in terms of reduced risk of development of gestational diabetes meilitus and improved psychological functioning. Moderate intensity aerobic exercise has been shown to be safe in pregnancy, with a number of studies now indicating that for trained athletes it may be possible to exercise at a higher level than is currently recommended by the American College of Obstetricians and Gynecologists. Studies of resistance training, incorporating moderate weights and avoiding maximal isometnc contractions, have shown no adverse outcomes. There may be benefits of increased strength and flexibility. The risk of neural tube defects due to exercise-induced hyperthermia that is suggested by animal studies is less likely in women, because of more effective mechanisms of heat dissipation in humans. There is accumulating evidence to suggest that participation in moderate intensity exercise throughout pregnancy may enhance birth weight, while more severe or frequent exercise, maintained for longer into the pregnancy: may result in lighter babies. There have been no reports of foetal injury or death in relation to trauma or contact during sporting activities. Despite this, a risk of severe blunt trauma is present in some sporting situations as pregnancy progresses. Exercise and lactation are compatible in the post-partum period, providing adequate calories are consumed. Considerations of pelvic floor function and type of delivery are relevant in planning a return to certain types of exercise at this time.
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