Browse by Lectorate "Sport en Voeding"

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Whey protein supplementation does not accelerate recovery from a single bout of eccentric exercise.
Hilkens, L.P.M. ; Bock, J. De ; Kretzers, J. ; Kardinaal, A.F.M. ; Floris-Vollenbroek, E.G. ; Scholtens, P.A.M.J. ; Horstman, A.M. ; Loon, L.J.C. van ; Dijk, J.W. van
2021, Article / Letter to editor (Journal of Sports Sciences, vol. 39, iss. 3, (2021), pp. 322-331)The current double blind, randomized, placebo-controlled trial with two parallel groups aimed to assess the impact of whey protein supplementation on recovery of muscle function and muscle soreness following eccentric exercise. During a 9-day period, forty recreationally active males received twice daily supplementation with either whey protein (PRO; 60 g/day) or an iso-energetic amount of carbohydrate (CON). Muscle function and soreness were assessed before, and 0, 3, 24, 48, and 72 h after performing 100 drop jumps. Recovery of isometric maximal voluntary contraction (MVC) did not significantly differ between groups (timextreatment, P = 0.56). In contrast, the recovery of isokinetic MVC at 90°·s(-1) was faster in CON as opposed to PRO (timextreatment interaction, P = 0.044). Recovery of isokinetic MVC at 180°·s(-1) was also faster in CON as opposed to PRO (timextreatment interaction, P = 0.011). Recovery of countermovement jump performance did not differ between groups (timextreatment interaction, P = 0.52). Muscle soreness, CK and CRP showed a transient increase over time (P < 0.001), with no differences between groups. In conclusion, whey protein supplementation does not accelerate recovery of muscle function or attenuate muscle soreness and inflammation during 3 days of recovery from a single bout of eccentric exercise.
Voetbalpassie
Brinkmans, N.
2021, Contribution for newspaper or weekly magazine (Allerhande, , pp. 140)
Voeding voor een optimaal herstel
Brinkmans, N.
2018, Article in monograph or in proceedings (FrieslandCampina Institute congres Sport & Voeding)
Voeding en overtraining
Brinkmans, N.
2019, Article in monograph or in proceedings (Limcosport congress “The ‘worn-out’ athlete”)
Voeding & psychologie
Brinkmans, N.
2018, Article in monograph or in proceedings (Congres Herstel 2.0: Is sportpsychologie de volgende stap?!)
Visie - Voeding bij turnen
Danen, S.L.
2020, Contribution for newspaper or weekly magazine (Nederlands Tijdschrift voor Voeding en Dietetiek, )
Supplement- en dopinggebruik in Nederlandse sportscholen: prevalentie en risico's
Hilkens, L.P.M. ; Schijndel, N. van ; Maas, T.
2022, Article / Letter to editor ((2022))
Sucrose but Not Nitrate Ingestion Reduces Strenuous Cycling-induced Intestinal Injury.
Jonvik, K.L. ; Lenaerts, K. ; Smeets, J.S.J. ; Kolkman, J.J. ; Loon, L.J.C. van ; Verdijk, L.B.
2019, Article / Letter to editor (Medicine and Science in Sports and Exercise, vol. 51, iss. 3, (2019), pp. 436-444)
Social Media, Body Image and Resistance Training: Creating the Perfect 'Me' with Dietary Supplements, Anabolic Steroids and SARM's
Hilkens, L.P.M. ; Cruyff, M. ; Woertman, L. ; Benjamins, J. ; Evers, C.
2021, Article / Letter to editor (Sports Medicine, (2021))
A single dose of sodium nitrate does not improve oral glucose tolerance in patients with type 2 diabetes mellitus.
Cermak, N.M. ; Hansen, D. ; Kouw, I.W.K. ; Dijk, J.W. van ; Blackwell, J.R. ; Jones, A.M. ; Gibala, M.J. ; Loon, L.J.C. van
2015, Article / Letter to editor (Nutrition Research, vol. 35, iss. 8, (2015), pp. 674-680)Dietary nitrate (NO3(-)) supplementation has been proposed as an emerging treatment strategy for type 2 diabetes. We hypothesized that ingestion of a single bolus of dietary NO3(-) ingestion improves oral glucose tolerance in patients with type 2 diabetes. Seventeen men with type 2 diabetes (glycated hemoglobin, 7.3% ± 0.2%) participated in a randomized crossover experiment. The subjects ingested a glucose beverage 2.5 hours after consumption of either sodium NO3(-) (0.15 mmol NaNO3(-) • kg(-1)) or a placebo solution. Venous blood samples were collected before ingestion of the glucose beverage and every 30 minutes thereafter during a 2-hour period to assess postprandial plasma glucose and insulin concentrations. The results show that plasma NO3(-) and nitrite levels were increased after NaNO3(-) as opposed to placebo ingestion (treatment-effect, P = .001). Despite the elevated plasma NO3(-) and nitrite levels, ingestion of NaNO3(-) did not attenuate the postprandial rise in plasma glucose and insulin concentrations (time × treatment interaction, P = .41 for glucose, P = .93 for insulin). Despite the lack of effect on oral glucose tolerance, basal plasma glucose concentrations measured 2.5 hours after NaNO3(-) ingestion were lower when compared with the placebo treatment (7.5 ± 0.4 vs 8.3 ± 0.4 mmol/L, respectively; P = .04). We conclude that ingestion of a single dose of dietary NO3(-) does not improve subsequent oral glucose tolerance in patients with type 2 diabetes.
Short-term muscle disuse lowers myofibrillar protein synthesis rates and induces anabolic resistance to protein ingestion.
Wall, B.T. ; Dirks, M.L. ; Snijders, T. ; Dijk, J.W. van ; Fritsch, M. ; Verdijk, L.B. ; Loon, L.J.C. van
2016, Article / Letter to editor (American Journal of Physiology : Endocrinology and Metabolism, vol. 310, iss. 2, (2016), pp. E137-47)Disuse leads to rapid loss of skeletal muscle mass and function. It has been hypothesized that short successive periods of muscle disuse throughout the lifespan play an important role in the development of sarcopenia. The physiological mechanisms underlying short-term muscle disuse atrophy remain to be elucidated. We assessed the impact of 5 days of muscle disuse on postabsorptive and postprandial myofibrillar protein synthesis rates in humans. Twelve healthy young (22 ± 1 yr) men underwent a 5-day period of one-legged knee immobilization (full leg cast). Quadriceps cross-sectional area (CSA) of both legs was assessed before and after immobilization. Continuous infusions of l-[ring-(2)H5]phenylalanine and l-[1-(13)C]leucine were combined with the ingestion of a 25-g bolus of intrinsically l-[1-(13)C]phenylalanine- and l-[1-(13)C]leucine-labeled dietary protein to assess myofibrillar muscle protein fractional synthetic rates in the immobilized and nonimmobilized control leg. Immobilization led to a 3.9 ± 0.6% decrease in quadriceps muscle CSA of the immobilized leg. Based on the l-[ring-(2)H5]phenylalanine tracer, immobilization reduced postabsorptive myofibrillar protein synthesis rates by 41 ± 13% (0.015 ± 0.002 vs. 0.032 ± 0.005%/h, P < 0.01) and postprandial myofibrillar protein synthesis rates by 53 ± 4% (0.020 ± 0.002 vs. 0.044 ± 0.003%/h, P < 0.01). Comparable results were found using the l-[1-(13)C]leucine tracer. Following protein ingestion, myofibrillar protein bound l-[1-(13)C]phenylalanine enrichments were 53 ± 18% lower in the immobilized compared with the control leg (0.007 ± 0.002 and 0.015 ± 0.002 mole% excess, respectively, P < 0.05). We conclude that 5 days of muscle disuse substantially lowers postabsorptive myofibrillar protein synthesis rates and induces anabolic resistance to protein ingestion.
Scoren met voeding & de toekomst van voeding in de zorg
Brinkmans, N. ; Creemers, S.
2019, Article in monograph or in proceedings (AAG Fizi workshopdag)
Scoren met Voeding
Brinkmans, N. ; Rozenberg, J.
2018, Book (monograph)
Repeated-sprint performance and plasma responses following beetroot juice supplementation do not differ between recreational, competitive and elite sprint athletes
Jonvik, K.L. ; Nyakayiru, J. ; Dijk, J.W. van ; Maase, K. ; Ballak, S.B. ; Senden, J.M.G. ; Loon, L.J.C. van ; Verdijk, L.B.
2018, Article / Letter to editor (European Journal of Sport Science, vol. 18, iss. 4, (2018), pp. 524-533)
Protein Supplementation Does Not Further Augment Physiological Adaptations to Prolonged Endurance Exercise Training
Jonvik, K.L. ; Paulussen, K.J.M. ; Danen, S.L. ; Horstman, A.M. ; Wardenaar, F.C. ; Loon, L.J.C. van ; Dijk, J.W. van
2019, Article / Letter to editor (Medicine and Science in Sports and Exercise, vol. 51, iss. 6, (2019), pp. 791)
Protein Supplementation Does Not Augment Adaptations to Endurance Exercise Training
Jonvik, K.L. ; Paulussen, K.J.M. ; Danen, S.L. ; Ceelen, I.J.M. ; Horstman, A.M. ; Wardenaar, F.C. ; Loon, L.J.C. van ; Dijk, J.W. van
2019, Article / Letter to editor (Medicine and Science in Sports and Exercise, vol. 51, iss. 10, (2019), pp. 2041-2049)
Performance and thermoregulation of Dutch Olympic and Paralympic athletes exercising in the heat: Rationale and design of the Thermo Tokyo study: The journal Temperature toolbox.
Korte, J.Q. de ; Bongers, C.C.W.G. ; Hopman, M.T.E. ; Teunissen, L.P.J. ; Jansen, K.M.B. ; Kingma, B.R.M. ; Ballak, S.B. ; Maase, K. ; Moen, M.H. ; Dijk, J.W. van ; Daanen, H.A.M. ; Eijsvogels, T.M.H. et al. sine al.
2021, Article / Letter to editor (Temperature, vol. 8, iss. 3, (2021), pp. 209-222)The environmental conditions during the Tokyo Olympic and Paralympic Games are expected to be challenging, which increases the risk for participating athletes to develop heat-related illnesses and experience performance loss. To allow safe and optimal exercise performance of Dutch elite athletes, the Thermo Tokyo study aimed to determine thermoregulatory responses and performance loss among elite athletes during exercise in the heat, and to identify personal, sports-related, and environmental factors that contribute to the magnitude of these outcomes. For this purpose, Dutch Olympic and Paralympic athletes performed two personalized incremental exercise tests in simulated control (15°C, relative humidity (RH) 50%) and Tokyo (32°C, RH 75%) conditions, during which exercise performance and (thermo)physiological parameters were obtained. Thereafter, athletes were invited for an additional visit to conduct anthropometric, dual-energy X-ray absorptiometry (DXA), and 3D scan measurements. Collected data also served as input for a thermophysiological computer simulation model to estimate the impact of a wider range of environmental conditions on thermoregulatory responses. Findings of this study can be used to inform elite athletes and their coaches on how heat impacts their individual (thermo)physiological responses and, based on these data, advise which personalized countermeasures (i.e. heat acclimation, cooling interventions, rehydration plan) can be taken to allow safe and maximal performance in the challenging environmental conditions of the Tokyo 2020 Olympic and Paralympic Games.
Opinie: ‘Pak misleidende gezondheidsinformatie van fitfluencers aan’
Hermans, R. ; Van Etten, E. ; Hilkens, L. ; Maas, H.M.
2022, Contribution for newspaper or weekly magazine (Het Parool, )
Nutritional supplements: an update
Iedema, N.
2018, Article in monograph or in proceedings (Food Valley Summit)
Nutritional Supplement Use by Dutch Elite and Sub-Elite Athletes: Does Receiving Dietary Counseling Make a Difference?
Wardenaar, F.C. ; Ceelen, I.J.M. ; Dijk, J.W. van ; Hangelbroek, R.W. ; Roy, L. Van ; Pouw, B. Van der ; Vries, JHM de ; Mensink, M. ; Witkamp, R.F.
2017, Article / Letter to editor (International Journal of Sport Nutrition and Exercise Metabolism, vol. 27, iss. 1, (2017), pp. 32-42)The use of nutritional supplements is highly prevalent among athletes. In this cross-sectional study, we assessed the prevalence of nutritional supplement use by a large group of Dutch competitive athletes in relation to dietary counseling. A total of 778 athletes (407 males and 371 females) completed a web-based questionnaire about the use of nutritional supplements. Log-binomial regression models were applied to estimate crude and adjusted prevalence ratios (PR) for the use of individual nutritional supplements in athletes receiving dietary counseling as compared with athletes not receiving dietary counseling. Of the athletes, 97.2% had used nutritional supplements at some time during their sports career, whereas 84.7% indicated having used supplements during the last 4 weeks. The top ranked supplements used over the last 4 weeks from dietary supplements, sport nutrition products and ergogenic supplements were multivitamin and mineral preparations (42.9%), isotonic sports drinks (44.1%) and caffeine (13.0%). After adjustment for elite status, age, and weekly exercise duration, dietary counseling was associated with a higher prevalence of the use of vitamin D, recovery drinks, energy bars, isotonic drinks with protein, dextrose, beta-alanine, and sodium bicarbonate. In contrast, dietary counseling was inversely associated with the use of combivitamins, calcium, vitamin E, vitamin B2, retinol, energy drinks and BCAA and other amino acids. In conclusion, almost all athletes had used nutritional supplements at some time during their athletic career. Receiving dietary counseling seemed to result in better-informed choices with respect to the use of nutritional supplements related to performance, recovery, and health.
A Nitrate-Rich Vegetable Intervention Elevates Plasma Nitrate and Nitrite Concentrations and Reduces Blood Pressure in Healthy Young Adults
Avoort, C.M.T. van der
2018, Article in monograph or in proceedings (ECSS conference)
A Nitrate-Rich Vegetable Intervention Elevates Plasma Nitrate and Nitrite Concentrations and Reduces Blood Pressure in Healthy Young Adults
Avoort, C.M.T. van der ; Jonvik, K.L. ; Nyakayiru, J. ; Loon, L.J.C. van ; Hopman, M. ; Verdijk, L.B.
2020, Article / Letter to editor (Journal of the Academy of Nutrition and Dietetics, (2020))
The Muscle Protein Synthetic Response to Whey Protein Ingestion Is Greater in Middle-Aged Women Compared With Men
Horstman, A.M. ; Kouw, I.W.K. ; Dijk, J.W. van ; Hamer, H.M. ; Groen, B.B.L. ; Kranenburg, J. van ; Gorissen, S.H.M. ; Loon, L.J.C. van
2019, Article / Letter to editor (Journal of Clinical Endocrinology and Metabolism, vol. 104, iss. 4, (2019), pp. 994-1004)
Meer bewegen, maar ook minder zitten
Maas, T. ; Dijk, J.W. van
2019, Article / Letter to editor (Tijdschrift voor Voeding & Diëtetiek, vol. 45, iss. 2, (2019))
Low bone mineral density and associated risk factors in male and female elite cyclists at different stages of a professional cycling career
Hilkens, L.P.M.
2022, Article in monograph or in proceedings (Low bone mineral density and associated risk factors in male and female elite cyclists at different stages of a professional cycling career)
Longitudinal changes in body fat assessed by DXA are adequately reflected by skinfold measurements according to ISAK standards
Danen, S.L.
2022, Article in monograph or in proceedings (Dag van het Sportonderzoek)
Longitudinal changes in body fat assessed by DEXA are adequately reflected by skinfold measurements according to ISAK standards
Danen, S.L.
2019, Article in monograph or in proceedings (ISENC)
Last Word on Viewpoint: Fragile bones of elite cyclists: to treat or not to treat?
Hilkens, L.P.M. ; Knuiman, P. ; Heijboer, M. ; Kempers, R. ; Jeukendrup, A.E. ; Loon, L.J.C. van ; Dijk, J.W. van
2021, Article / Letter to editor (Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology, vol. 131, iss. 1, (2021), pp. 34-35)
Krachtvoer. Deel 2: optimaliseren van krachttrainingsadaptaties met voedingssupplementen.
Hilkens, L.P.M. ; Werf, R. van der ; Iedema, N. ; Maas, T.
2020, Article / Letter to editor (Sportgericht, (2020))
Krachtvoer. Deel 1: optimaliseren van krachttrainingsadaptaties met voeding.
Hilkens, L.P.M. ; Werf, R. van der ; Iedema, N. ; Maas, T.
2020, Article / Letter to editor (Sportgericht, vol. 74, iss. 2, (2020), pp. 32-39)
Krachttraining voor meer spiermassa, deel 2
Hilkens, L.P.M. ; Wassink, H. ; Maas, T.
2019, Article / Letter to editor (Sportgericht, vol. 73, iss. 6, (2019), pp. 2-9)
Krachttraining voor meer spiermassa, deel 1
Hilkens, L.P.M. ; Wassink, H. ; Maas, T.
2019, Article / Letter to editor (Sportgericht, vol. 73, iss. 5, (2019), pp. 42-48)
Invited oral presentation: De rol van sedentair gedrag en fysieke inspanning bij gezondheid en ziekte
Dijk, J.W. van
2018, Article in monograph or in proceedings (-Vlaamse Beroeps-vereniging voor Dietisten)
Increasing vegetable intake to obtain the health promoting and ergogenic effects of dietary nitrate
Avoort, C.M.T. van der ; Loon, L.J.C. van ; Hopman, M. ; Verdijk, L.B.
2018, Article / Letter to editor (European Journal of Clinical Nutrition, vol. 72, iss. 11, (2018), pp. 1485-1489)
The impact of protein supplementation on recovery of muscle function, damage and soreness
Hilkens, L.P.M.
2020, Article in monograph or in proceedings (The impact of protein supplementation on recovery of muscle function, damage and soreness)
The impact of protein supplementation on recovery of muscle function, damage and soreness
Hilkens, L.P.M.
2020, Article in monograph or in proceedings (The impact of protein supplementation on recovery of muscle function, damage and soreness)
The impact of beetroot juice supplementation on muscular endurance, maximal strength and countermovement jump performance.
Jonvik, K.L. ; Hoogervorst, D. ; Peelen, H.B. ; Niet, M. de ; Verdijk, L.B. ; Loon, L.J.C. van ; Dijk, J.W. van
2021, Article / Letter to editor (European Journal of Sport Science, vol. 21, iss. 6, (2021), pp. 871-878)Purpose: Dietary nitrate has been shown to enhance muscle contractile function and has, therefore, been linked to increased muscle power and sprint exercise performance. However, the impact of dietary nitrate supplementation on maximal strength, performance and muscular endurance remains to be established. Methods: Fifteen recreationally active males (25 ±4 y, BMI 24 ±3 kg/m(2)) participated in a randomized double-blinded cross-over study comprising two 6-d supplementation periods; 140 mL/d nitrate-rich (BR; 985 mg/d) and nitrate-depleted (PLA; 0.37 mg/d) beetroot juice. Three hours following the last supplement, we assessed countermovement jump (CMJ) performance, maximal strength and power of the upper leg by voluntary isometric (30° and 60° angle) and isokinetic contractions (60, 120, 180 and 300°•s(-1)), and muscular endurance (total workload) by 30 reciprocal isokinetic voluntary contractions at 180°•s(-1). Results: Despite differences in plasma nitrate (BR: 879 ±239 vs. PLA: 33 ±13 μmol/L, Pn<n0.001) and nitrite (BR: 463 ±217 vs. PLA: 176 ±50 nmol/L, Pn<n0.001) concentrations prior to exercise testing, CMJ height (BR: 39.3 ±6.3 vs. PLA: 39.6 ±6.3 cm; Pn=n0.39) and muscular endurance (BR: 3.93 ±0.69 vs. PLA: 3.90 ±0.66 kJ; Pn=n0.74) were not different between treatments. In line, isometric strength (Pn>n0.50 for both angles) and isokinetic knee extension power (Pn>n0.33 for all velocities) did not differ between treatments. Isokinetic knee flexion power was significantly higher following BR compared with PLA ingestion at 60°•s(-1) (Pn=n0.001), but not at 120°•s(-1) (Pn=n0.24), 180°•s(-1) (Pn=n0.066), and 300°•s(-1) (Pn=n0.36). Conclusion: Nitrate supplementation does not improve maximal strength, countermovement jump performance and muscular endurance in healthy, active males.
The impact of beetroot juice supplementation on muscle strength and endurance
Hilkens, L.P.M.
2018, Article in monograph or in proceedings (23th Annual Congress of the European College of Sport Science)
Habitual Dietary Nitrate Intake in Highly Trained Athletes.
Jonvik, K.L. ; Nyakayiru, J. ; Dijk, J.W. van ; Wardenaar, F.C. ; Loon, L.J.C. van ; Verdijk, L.B.
2017, Article / Letter to editor (International Journal of Sport Nutrition and Exercise Metabolism, vol. 27, iss. 2, (2017), pp. 148-157)Although beetroot juice, as a nitrate carrier, is a popular ergogenic supplement among athletes, nitrate is consumed through the regular diet as well. We aimed to assess the habitual dietary nitrate intake and identify the main contributing food sources in a large group of highly trained athletes. Dutch highly trained athletes (226 women and 327 men) completed 2-4 web-based 24-hr dietary recalls and questionnaires within a 2- to 4-week period. The nitrate content of food products and food groups was determined systematically based on values found in regulatory reports and scientific literature. These were then used to calculate each athlete's dietary nitrate intake from the web-based recalls. The median[IQR] habitual nitrate intake was 106[75-170] mg/d (range 19-525 mg/d). Nitrate intake correlated with energy intake (ρ = 0.28, p < .001), and strongly correlated with vegetable intake (ρ = 0.78, p < .001). In accordance, most of the dietary nitrate was consumed through vegetables, potatoes and fruit, accounting for 74% of total nitrate intake, with lettuce and spinach contributing most. When corrected for energy intake, nitrate intake was substantially higher in female vs male athletes (12.8[9.2-20.0] vs 9.4[6.2-13.8] mg/MJ; p < .001). This difference was attributed to the higher vegetable intake in female vs male athletes (150[88-236] vs 114[61-183] g/d; p < .001). In conclusion, median daily intake of dietary nitrate in highly trained athletes was 106 mg, with large interindividual variation. Dietary nitrate intake was strongly associated with the intake of vegetables. Increasing the intake of nitrate-rich vegetables in the diet might serve as an alternative strategy for nitrate supplementation.
Glycemic control during consecutive days with prolonged walking exercise in individuals with type 1 diabetes mellitus.
Dijk, J.W. van ; Eijsvogels, T.M.H. ; Nyakayiru, J. ; Schreuder, T.H. ; Hopman, M.T.E. ; Thijssen, D.H. ; Loon, L.J.C. van
2016, Article / Letter to editor (Diabetes Research and Clinical Practice, vol. 117, (2016), pp. 74-81)AIMS: Despite its general benefits for health, exercise complicates the maintenance of stable blood glucose concentrations in individuals with type 1 diabetes. The aim of the current study was to examine changes in food intake, insulin administration, and 24-h glycemic control in response to consecutive days with prolonged walking exercise (~8h daily) in individuals with type 1 diabetes. METHODS: Ten individuals with type 1 diabetes participating in the worlds' largest walking event were recruited for this observational study. Simultaneous measurements of 24-h glycemic control (continuous glucose monitoring), insulin administration and food intake were performed during a non-walking day (control) and during three subsequent days with prolonged walking exercise (daily distance 40 or 50km). RESULTS: Despite an increase in daily energy (31±18%; p<0.01) and carbohydrate (82±71g; p<0.01) intake during walking days, subjects lowered their insulin administration by 26±16% relative to the control day (p<0.01). Average 24-h blood glucose concentrations, the prevalence of hyperglycemia (blood glucose >10 mmol/L) and hypoglycemia (blood glucose <3.9mmol/L) did not differ between the control day and walking days (p>0.05 for all variables). The prolonged walking exercise was associated with a modest increase in glycemic variability compared with the control day (p<0.05). CONCLUSION: Prolonged walking exercise allows for profound reductions in daily insulin administration in persons with type 1 diabetes, despite large increments in energy and carbohydrate intake. When taking such adjustments into account, prolonged moderate-intensity exercise does not necessarily impair 24-h glycemic control.
Glycaemic Profiles of Children With Overweight and Obesity in Free-living Conditions in Association With Cardiometabolic Risk.
Rijks, J. ; Karnebeek, K. ; Dijk, J.W. van ; Dorenbos, E. ; Gerver, W.J. ; Stouthart, P. ; Plat, J. ; Vreugdenhil, A.
2016, Article / Letter to editor (Scientific Reports, vol. 6, (2016), pp. 31892)Insulin resistance is common among children with overweight and obesity. However, knowledge about glucose fluctuations in these children is scarce. This study aims to evaluate glycaemic profiles in children with overweight and obesity in free-living conditions, and to examine the association between glycaemic profiles with insulin resistance and cardiovascular risk parameters. One hundred eleven children with overweight and obesity were included. 48-hour sensor glucose concentrations in free-living conditions, fasting plasma and post-glucose load concentrations, serum lipid and lipoprotein concentrations, homeostatic model assessment of insulin resistance (HOMA-IR), and blood pressure were evaluated. Hyperglycaemic glucose excursions (≥7.8nmmol/L) were observed in 25% (nn=n28) of the children. The median sensor glucose concentration was 5.0 (2.7-7.3) mmol/L, and correlated with fasting plasma glucose concentrations (rsn=n0.190, pn=n0.046), serum insulin concentrations (rsn=n0.218, pn=n0.021), and HOMA-IR (rsn=n0.230, pn=n0.015). The hyperglycaemic area under the curve (AUC) correlated with waist circumference z-score (rsn=n0.455, pn=n0.025), triacylglycerol concentrations (rsn=n0.425, pn=n0.024), and HOMA-IR (rsn=n0.616, pn<n0.001). In conclusion, hyperglycaemic glucose excursions are frequently observed in children with overweight and obesity in free-living conditions. Children with insulin resistance had higher median sensor glucose concentrations and a larger hyperglycaemic sensor glucose AUC, which are both associated with specific parameters predicting cardiovascular disease risk.
Fragile bones of elite cyclists: to treat or not to treat?
Hilkens, L.P.M. ; Knuiman, P. ; Heijboer, M. ; Kempers, R. ; Jeukendrup, A.E. ; Loon, L.J.C. van ; Dijk, J.W. van
2021, Article / Letter to editor (Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology, (2021))
Football nutrition
Brinkmans, N.
2018, Article in monograph or in proceedings (Food Valley Summit)
Foamrolling: een hype of de moeite waard?
Hilkens, L.P.M. ; Kuipers, R. ; Nyakayiru, J.
2020, Article / Letter to editor ((2020))
Exercise strategies to optimize glycemic control in type 2 diabetes: a continuing glucose monitoring perspective.
Dijk, J.W. van ; Loon, L.J.C. van
2015, Article / Letter to editor (Diabetes Spectr, vol. 28, iss. 1, (2015), pp. 24-31)IN BRIEF The introduction of continuous glucose monitoring (CGM) several years ago enabled researchers to investigate the impact of exercise strategies on 24-hour glycemic control. Such unique information on the glucoregulatory properties of exercise will ultimately lead to more effective exercise programs to prevent and treat type 2 diabetes. This article reviews the role of exercise and physical activity in the treatment of type 2 diabetes, complemented by recent data obtained by CGM.
The energy requirements of Paralympic champions.
Weijer, V.C.R. ; Jonvik, K.L. ; Dam, C.H.J. van ; Plasqui, G. ; Raastad, T ; Loon, L.J.C. van ; Dijk, J.W. van
2022, Article in monograph or in proceedings (The energy requirements of Paralympic champions.)
The energy requirements of Paralympic champions.
Weijer, V.C.R. ; Jonvik, K.L. ; Dam, C.H.J. van ; Plasqui, G. ; Raastad, T ; Loon, L.J.C. van ; Dijk, J.W. van
2022, Article in monograph or in proceedings (The energy requirements of Paralympic champions.)
Energy expenditure and dietary intake in professional football players in the Dutch Premier League: Implications for nutritional counselling
Brinkmans, N. ; Iedema, N. ; Plasqui, G. ; Wouters, L. ; Saris, W.H.M. ; Loon, L.J.C. van ; Dijk, J.W. van
2019, Article / Letter to editor (Journal of Sports Sciences, vol. 37, iss. 24, (2019), pp. 2759-2767)
Endurance-type exercise combined with acipimox administration provides superior benefits for glycemic control compared with endurance-type exercise alone in male patients with type 2 diabetes
Hansen, D. ; Verboven, K. ; Dijk, J.W. van ; Minten, L. ; Smeets, K. ; Loon, L.J.C. van
2017, Article / Letter to editor (Acta Cardiologica, vol. 72, iss. 1, (2017), pp. 119)
Effects Of Acute Versus 6-day Sodium Nitrate Supplementation On Time-trial Performance In Trained Cyclists
Jonvik, K.L. ; Nyakayiru, J. ; Pinckaers, PJM ; Dijk, J.W. van ; Senden, J.M.G. ; Loon, L.J.C. van ; Verdijk, L.B.
2015, Article / Letter to editor (Medicine and Science in Sports and Exercise, vol. 47, iss. 5, (2015), pp. CP540-CP541)

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