Gopika Devi Ramkilawon

Ms. Gopika Devi Ramkilawon

Statistics, University of Pretoria, Pretoria, Gauteng, South Africa
orcid

Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
15 September 2023 in Animals
Verified
Journal Article
Open access
PDF file
DLDina Alida Linde
Dina Alida Linde
DSDirkjan Schokker
Dirkjan Schokker
CTCornelius Jacobus Lindeque Du Toit
Cornelius Jacobus Lindeque Du Toit
GRGopika Devi Ramkilawon
Gopika Devi Ramkilawon
EMEste van Marle-Köster
Este van Marle-Köster
The rising concern of antibiotic growth promoter use in livestock has necessitated the investigation into alternative feed additives. The effect of a probiotic and essential oils to an ionophore on the rumen microbiome composition of Bonsmara bulls raised under feedlot conditions was compared. Forty-eight Bonsmara weaners were allocated to four groups: a group with basal diet (CON) and three groups supplemented with monensin (MON), probiotic (PRO), and essential oils (EO). During the 120 days feeding period, rumen content was collected from four animals per group within each phase via a stomach tube for 16S rRNA and internal transcribed spacer (ITS) sequencing as well as volatile fatty acid analysis. In the starter phase, MON had a significantly lower acetate to propionate ratio and a higher Succinivibrionaceae abundance. The abundance of Lachnospiraceae was significantly higher in EO compared to MON. In the finisher phase, PRO had a significantly higher bacterial diversity. The alpha diversity did not differ between the fungal populations of the groups. The abundance of Proteobacteria was the lowest in PRO compared to the other groups. Limited variation was observed between the rumen microbiome composition of monensin compared to the other treatment groups, indicating that these alternatives can be considered.

14 October 2024 in BMC Sports Science, Medicine and Rehabilitation
Verified
Journal Article
Open access
PDF file
LPLervasen Pillay
Lervasen Pillay
DRDina (Christa) Christina Janse van Rensburg
Dina (Christa) Christina Janse van Rensburg
GRGopika Devi Ramkilawon
Gopika Devi Ramkilawon
TAThor Einar Andersen
Thor Einar Andersen
GKGino M.M.J. Kerkhoffs
Gino M.M.J. Kerkhoffs
VGVincent Gouttebarge
Vincent Gouttebarge
Aims: We examined the prevalence and incidence of mental health symptoms (MHS) in active professional male footballers over a 12-month period and investigated if MHS was associated with severe injuries or surgeries. Participants and methods: Football Players Worldwide (FIFPRO) affiliated national unions invited active professional male football players to participate in the study. MHS was operationalised in symptoms of anxiety, disordered eating, depression, distress, sleep disturbance, alcohol misuse and drug misuse, all being assessed with validated questionnaires. Results: Of the 101 participants enrolled, the prevalence of distress was 53% and MHS was between 6% for drug misuse and 48% for alcohol misuse. The incidence of distress was 29% and MHS ranged from 1% for anxiety to 11% for sleep disturbance. At baseline, players suffering from injury/surgery were more likely to report depression (OR 1.35; 95%CI 1.10–1.70) and disordered eating (OR 1.22; 95%CI 1.02–1.47). At follow-up, players who suffered injury or surgery were inclined to report distress (OR 2.15; 95%CI 1.26–4.31) and drug misuse (OR 2.05; 95%CI 1.01–4.04). Conclusion: There seems to be a greater prevalence of MHS in active professional male footballers than in the global population and other sports. After severe injury/surgery, the risk of developing MHS is increased, confirming that healthcare professionals should be aware of the mental health of injured players.

18 July 2023 in Sports
Verified
Journal Article
Open access
PDF file
LPLervasen Pillay
Lervasen Pillay
DRDina (Christa) Christina Janse van Rensburg
Dina (Christa) Christina Janse van Rensburg
GRGopika Devi Ramkilawon
Gopika Devi Ramkilawon
MMMario Maas
Mario Maas
EOEmmanuel Orhant
Emmanuel Orhant
VGVincent Gouttebarge
Vincent Gouttebarge
Objective: To comment on and explore (1) the prevalence of clinical knee and hip osteoarthritis (OA); (2) the association between pain or function and clinical knee or hip OA; (3) the association between injury or surgery and clinical knee or hip OA. Methods: Participants were recruited from FIFPRO members. A total of 101 footballers consented to answer (1) a developed questionnaire, (2) patient-reported outcome measures, and (3) be evaluated by their team physician for clinical knee or hip OA. Results: Of the 53% evaluated for clinical knee and hip OA, a prevalence of 9.43% and 7.55% of knee and hip OA, respectively, was found. There was a significant and strong association between knee (p = 0.033; Cramers v Value = 0.523) and hip pain (p = 0.005; Cramers v Value = 0.602) and clinical OA. A significant association existed between Hip dysfunction and Osteoarthritis Outcome short form Scores and clinical OA of the hip (p = 0.036). The odds of clinical knee OA were 1.5 and 4.5 times more after one or more injuries or surgeries, respectively. There was no association between playing position and clinical OA. Conclusion: There is a low prevalence of a clinical knee or hip OA in the active professional male footballer. Pain may be a valid symptom to predict or monitor knee or hip OA. Validated assessment tools should be utilised to identify a negative effect on function. The odds of developing clinical OA in the knee with the number of injuries or surgeries. The hip presents with earlier clinical signs of OA compared to the knee.

HLHelga Elke Lister
Helga Elke Lister
KMKarien Mostert
Karien Mostert
GRGopika Devi Ramkilawon
Gopika Devi Ramkilawon
COCathrine Oelschig
Cathrine Oelschig
ONOlwethu Ntiyane
Olwethu Ntiyane
FMFilip Maric
Filip Maric
Among the many actions required to avert further intensification of today’s social, ecological and health crises is also the improvement of healthcare’s environmental sustainability, including in countries particularly vulnerable to such crises. The present study aimed to identify Namibian healthcare professionals’ knowledge, attitudes and practices, along with barriers and educational needs, as a foundation for context-relevant interventions. The study used a non-experimental, descriptive quantitative research design with an existing validated cross-sectional questionnaire as its data collection tool. Both purposive and snowball sampling were used to select healthcare professionals (n = 71) to participate in the quantitative online questionnaire. R (version 4.2.1) software was used to analyse the data from the completed questionnaires. The results showed that the Namibian healthcare professionals participating in this study have basic knowledge of and positive attitudes toward environmental sustainability in healthcare. However, various barriers to implementing strategies towards environmental sustainability exist that currently prevent the implementation of relevant practices. These should be overcome by the Namibian health system by providing the necessary frameworks, policies, measures and resources to drive improvements in environmental sustainability. Additionally, future and current healthcare professionals must receive training across all professional education levels to enable implementation in practice and effective advocacy and planetary health promotion.

20 June 2023 in Brazilian Journal of Biometrics
Verified
Journal Article
Open access
PDF file
GRGopika Devi Ramkilawon
Gopika Devi Ramkilawon
JFJohannes Ferreira
Johannes Ferreira
NNNajmeh Nakhaeirad
Najmeh Nakhaeirad
Movement of animals is often characterised by direction (measured on the circle) and distance (measured on the real line); but traditionally employed models often do not account for potential asymmetric directional movement, or departures from the usual von Mises assumption for direction and gamma/Weibull assumptions for distance. This paper focuses on the modelling of circular data in this animal movement context relying on a previously unconsidered circular distribution (the sine-skewed von Mises) which provides a platform for departures from symmetry. In addition, alternative models to usual distance assumptions are considered, namely the power Lindley (as a mixture of gamma andWeibull distributions) as well as a Gumbel candidate. Computational aspects and investigations of this joint modelling (presented as a consensus model) are highlighted, accompanied by an extensive bootstrap study. A general hidden state Markov model is used to incorporate these essential components when estimating via the use of the EM algorithm, and goodness of fit measures verify the validity and viable future consideration of the newly proposed theoretical models within this practical and computational animal movement environment.

20 June 2024 in Sports
Verified
Journal Article
Open access
PDF file
LPLervasen Pillay
Lervasen Pillay
DRDina (Christa) Christina Janse van Rensburg
Dina (Christa) Christina Janse van Rensburg
SHSteve den Hollander
Steve den Hollander
GRGopika Devi Ramkilawon
Gopika Devi Ramkilawon
GKGino M.M.J. Kerkhoffs
Gino M.M.J. Kerkhoffs
VGVincent Gouttebarge
Vincent Gouttebarge
Objective: To determine the neurocognitive function of active professional male footballers, determine whether deficits/impairments exist, and investigate the association between previous concussion(s) and neurocognitive function. Methods: An observational cross-sectional study conducted via electronic questionnaires. The CNS Vital Signs online testing system was used to evaluate neurocognitive function. Results: Of the 101 participants, 91 completed the neurocognitive function testing. Neurocognitive function domain deficits or impairments were unlikely in 54.5–89.1%, slight in 5.9–21.8%, moderate in 1.0–9.9%, and likely in 4.0–14.9% of participants. A history of zero concussions found a significant association between the neurocognitive index (Odds Ratio [OR] 0.6; 95% CI 0.2–0.4) and complex attention domain (OR 0.3; 95% CI 0.1–0.9), with 40% and 70% less odds, respectively, of deficit/impairment. Among the 54.5% who reported any number of concussions, there were increased odds of neurocognitive domain deficits/impairments for complex attention (CA) [3.4 times more] and simple attention (SA) [3.1 times more]. Conclusion: In the active professional male footballer, most neurocognitive functions do not have significant deficits/impairments. The odds of neurocognitive function deficit/impairment were significantly increased threefold for CA and SA in those who reported a history of any concussion(s).