Browsing Faculty of Health Sciences by Author "Kruger, Herculina S."
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Agreement between specific measures of adiposity and associations with high blood pressure in black South African women
Kruger, Herculina S.; Botha-Ravyse, Chrisna; Havemann-Nel, Lize; Doubell, Maretha; Van Rooyen, Johannes M. (Wiley, 2017)Objectives To derive percentage body fat (%BF) cut-points according to body mass index (BMI) categories for adult black South African women and to investigate the agreement between adiposity classifications according to ... -
The association of clot lysis time with total obesity is partly independent from the association of PAI-1 with central obesity in African adults
Eksteen, Philna; Pieters, Marlien; De Lange, Zelda; Kruger, Herculina S. (Elsevier, 2015)Introduction: Preliminary evidence indicates that the association of fibrinolytic potential, measured as clot lysis time (CLT), with body composition may differ from that of plasminogen activator inhibitor type–1 (PAI–1). ... -
Associations of linoleic acid with markers of glucose metabolism and liver function in South African adults
Pertiwi, Kamalita; Kruger, Herculina S.; Van Zyl, Tertia; Kruger, Iolanthé M.; Smuts, Cornelius M. (BMC, 2020)Background The relation between dietary and circulating linoleic acid (18:2 n-6, LA), glucose metabolism and liver function is not yet clear. Associations of dietary and circulating LA with glucose metabolism and liver ... -
Bone turnover markers in HIV-infected women on tenofovir-based antiretroviral therapy
Mulubwa, Mwila; Viljoen, Michelle; Kruger, Iolanthé M.; Kruger, Herculina S.; Rheeders, Malie (AOSIS, 2017)Background: Tenofovir disoproxil fumarate (TDF) antiretroviral therapy is associated with disruption of the bone turnover process. Objectives: The objective of this study was to determine the association between tenofovir ... -
Dietary sodium intake and its relationship to adiposity in young black and white adults: the African‐PREDICT study
Crouch, Simone H.; Ware, Lisa J.; Gafane-Matemane, Lebo F.; Kruger, Herculina S.; Van Zyl, Tertia; Van der Westhuizen, Bianca; Schutte, Aletta E. (Wiley, 2018)Obesity and salt intake are both established factors contributing to cardiovascular disease development. Recently, studies found a controversial positive relationship between dietary salt and obesity. Therefore, the ... -
Efavirenz plasma concentrations at 1, 3, and 6 months post-antiretroviral therapy initiation in HIV type 1-infected South African children
Viljoen, Michelle; Kruger, Herculina S.; Rheeders, Malie; Gous, Hermien; Riddick, Alison (Mary Ann Liebert, 2010)The aim of this study was to quantify the plasma efavirenz concentrations over 6 months in black HIV-1-infected South African children (3–14 years), from resource-limited households, attending an outpatient ... -
Effect of small-quantity lipid-based nutrient supplements on growth, psychomotor development, iron status, and morbidity among 6- to 12-mo-old infants in South Africa: a randomized controlled trial
Smuts, Cornelius M.; Matsungo, Tonderayi M.; Malan, Linda; Kruger, Herculina S.; Rothman, Marinel; Covic, Namukolo; Joosten, Karen; Lombard, Carl J.; Faber, Mieke (Oxford Univ Press, 2019)Background Evidence on the effect of small-quantity lipid-based nutrient supplements (SQ-LNSs) on early child growth and development is mixed. Objective This study assessed the effect of daily consumption of 2 different ... -
Effects of a multi-micronutrient-fortified beverage, with and without sugar, on growth and cognition in South African schoolchildren: a randomised, double-blind, controlled intervention
Taljaard, Christine; Covic, Namukolo M.; Van Graan, Averalda E.; Kruger, Herculina S.; Smuts, Cornelius M.; Baumgartner, Jeannine; Wright, Hattie H.; Jerling, Johann C. (Cambridge University Press, 2013)Little is known about the effects of combined micronutrient and sugar consumption on growth and cognition. In the present study, we investigated the effects of micronutrients and sugar, alone and in combination, in a ... -
Effects of egg as an early complementary food on growth of 6- to 9-month-old infants: a randomised controlled trial
Ricci, Hannah; Faber, Mieke; Ricci, Cristian; Kruger, Herculina S.; Malan, Linda; Nakiranda, Regina; Visser, Marina; Smuts, Cornelius Marius (Cambridge University Press, 2023)Objective: To assess the effect of daily egg consumption for six months on linear growth (primary outcome), weight-for-age, weight-for-length, mid-upper arm circumference-for-age, head circumference-for-age Z-scores, ... -
Level of agreement between objectively determined body composition and perceived body image in 6-to 8-year-old South African children: the Body Composition-Isotope Technique study
Moeng-Mahlangu, Lynn T.; Monyeki, Makama A.; Kruger, Herculina S.; Reilly, John J.; Mchiza, Zandile J. (Public Library of Science, 2020)To assess the level of agreement between body size self-perception and actual body size determined by body mass index (BMI) z-score and body fatness measured by the deuterium dilution method (DDM) in South African children ... -
Magnesium intake predicts bone turnover in postmenopausal black South African women
Wright, Hattie H.; Schutte, Willem D.; Wentzel-Viljoen, Edelweiss; Kruger, Iolanthé M.; Kruger, Herculina S. (MDPI, 2019)This prospective study investigated the association between nutrient intake, dietary patterns, and changes in bone turnover and bone mineral density (BMD) in postmenopausal urban black South African women over two years. ... -
Overweight among children decreased, but obesity prevalence remained high among women in South Africa, 1999-2005
Kruger, Herculina S.; Steyn, Nelia P.; Swart, Elizabeth C.; Maunder, Eleni M.W.; Nel, Johanna H.; Moeng, Lynn; Labadarios, Demetre (Cambridge University Press, 2012)Objective: The aim of the present study was to assess anthropometric status in South African children and women in 2005 in order to document temporal trends in selected anthropometric parameters. Design: Heights and ... -
Physical activity energy expenditure and sarcopenia in black South African urban woman
Kruger, Herculina S.; Havemann-Nel, Lize; Ravyse, Chrisna; Moss, Sarah J.; Tieland, Michael (Human Kinetics, 2016)Background: Black women are believed to be genetically less predisposed to age-related sarcopenia. The objective of this study was to investigate lifestyle factors associated with sarcopenia in black South African (SA) ... -
Positive association between dietary iron intake and iron status in HIV-infected children in Johannesburg, South Africa
Kruger, Herculina S.; Balk, Lisanne J.; Viljoen, Michelle; Meyers, Tammy M. (Elsevier, 2013)Anemia is a common complication of pediatric HIV infection and is associated with suboptimal cognitive performance and growth failure. Routine iron supplementation is not provided to South African HIV-infected children. ... -
The prevalence and factors associated with stunting among infants aged 6 months in a peri-urban South African community
Matsungo, Tonderayi M.; Kruger, Herculina S.; Rothman, Marinel; Smuts, Cornelius M. (Cambridge Univ Press, 2017)Objective: To determine the prevalence and factors associated with stunting in 6-month-old South African infants. Design: This cross-sectional study was part of the baseline of a randomized controlled trial. Weight-for-length, ... -
Psychosocial barriers and enablers of exclusive breastfeeding: lived experiences of mothers in low-income townships, North West Province, South Africa
Witten, Chantell; Claasen, Nicole; Kruger, Herculina S.; Grobler, Herman; Coutsoudis, Anna (BMC, 2020)Background:Despite national efforts to promote exclusive breastfeeding (EBF), South Africa’s EBF rate is only 32 %.The aim of this study was to examine the rate of EBF discontinuation and the lived experiences of ...