المؤلفون: Stanzione, Joseph R, Brooks, George A, Bruneau, Michael L, French, Duncan N, Nasser, Jennifer A, Smith, Sinclair A, Volpe, Stella L

المصدر: Translational Journal of the American College of Sports Medicine. 7(3)

وصف الملف: application/pdf

الوصول الحر: https://escholarship.org/uc/item/0jh99133Test

المؤلفون: Nichols, Quentin Z., Ramadoss, Rohit, Stanzione, Joseph R., Volpe, Stella L.

مصطلحات موضوعية: collegiate athletes, dietary intake, masters athletes, micronutrients, supplementation

الوصف: ObjectiveIn our cross-sectional study, we evaluated micronutrient supplementation intake among Collegiate and Masters Athletes. MethodsWe conducted a cross-sectional study to assess micronutrient supplementation consumption in Collegiate and Masters Athletes, comparing sex and sport classification within each respective group. Micronutrient supplement consumption data were measured using a Food Frequency Questionnaire. A two-way analysis of variance was used to explore the differences among Collegiate and Masters Athletes' supplement intakes of the following vitamins and minerals: vitamins A, B-6, B-12, C, E, D, and calcium, folate, iron, magnesium niacin, riboflavin, selenium, thiamine, and zinc. When significant differences were found, a Bonferroni post hoc test was performed to identify specific group differences. The significance level was set a priori at p < 0.05. ResultsA total of 198 athletes (105 females and 93 males) were included in the study. Participants were 36.16 +/- 12.33 years of age. Collegiate male athletes had significantly greater vitamin A [1,090.51 +/- 154.72 vs. 473.93 +/- 233.18 mg retinol activity equivalents (RAE)/day] (p < 0.036), folate [337.14 +/- 44.79 vs. 148.67 +/- 67.50 mcg dietary folate equivalents (DFE)/day] (p < 0.027), and magnesium (65.35 +/- 8.28 vs. 31.28 +/- 12.48 mg/day) (p < 0.031) intakes compared to Collegiate female athletes. Collegiate CrossFit Athletes (940.71 +/- 157.54 mg/day) had a significantly greater vitamin C intake compared to Collegiate General Athletes (156.34 +/- 67.79 mg/day) (p < 0.005), Collegiate Triathletes (88.57 +/- 148.53 mg/day) (p < 0.027), Collegiate Resistance Training Athletes (74.28 +/- 143.81 mg/day) (p < 0.020), and Collegiate Powerlifters (175.71 +/- 128.63 mg/day) (p < 0.044). Masters females had significantly greater calcium intakes compared to Masters males (494.09 +/- 65.73 vs.187.89 +/- 77.23 mg/day, respectively) (p < 0.002). Collegiate Runners (41.35 +/- 6.53 mg/day) had a significantly greater iron ...

وصف الملف: application/pdf

العلاقة: 854442; http://hdl.handle.net/10919/116240Test; https://doi.org/10.3389/fspor.2023.854442Test

الإتاحة: https://doi.org/10.3389/fspor.2023.854442Test
http://hdl.handle.net/10919/116240Test

المؤلفون: Stanzione, Joseph R., Boullata, Joseph I., Bruneau, Michael L., Jr., Volpe, Stella L.

مصطلحات موضوعية: DXA, Lean body mass, Masters Athletes, Protein

الوصف: Recommendations for protein intake are based on total body weight; however, these recommendations do not consider lean body mass (LBM). The purpose of the present study was to identify the average protein intake in g/kg LBM in a group of healthy Masters Athletes (>= 26 years of age, exercising >= 2 d/week). Data were obtained from a cross-sectional study. Body weight (kg), height (cm) and LBM via dual-energy X-ray absorptiometry were measured. Dietary intake was measured using a 2005 Block Food Frequency Questionnaire. The average energy intake, the percent energy from protein and the average protein intake in g/kg LBM were calculated. Differences between protein intake and the US Recommended Dietary Allowance (US RDA) (0.8 g/kg body weight) were determined. Alpha levels were set a priori to P < 0.05. A total of 176 participants (94 women, 82 men; 39 +/- 11 years of age; body mass index: 24.6 +/- 3.4 kg/m(2)) were analysed. The average energy intake, the percent protein energy and the average protein intake were 7996.9 +/- 110.9 kilojoules (kJ)/d (1,910.4 +/- 26.5 kcal), 15.5 +/- 2.6 % and 1.43 +/- 0.53 g/kg LBM, respectively. No differences existed between women and men for protein intake/kg LBM. Both sexes had significantly higher protein intakes than the US RDA (P < 0.001). We identified the average protein intake (g/kg LBM) in healthy Masters Athletes that may contribute to evolving perspectives on the determination of protein needs. The present study helps establish the relationship between protein intake and LBM so that we may further increase our accuracy when developing future protein recommendations. ; Published version

وصف الملف: application/pdf

العلاقة: http://hdl.handle.net/10919/110981Test; https://doi.org/10.1017/jns.2022.10Test; 11

الإتاحة: https://doi.org/10.1017/jns.2022.10Test
http://hdl.handle.net/10919/110981Test

المؤلفون: Ramadoss, Rohit, Stanzione, Joseph R., Volpe, Stella L.

مصطلحات موضوعية: combat athletes, runners, substrate utilization, fat, carbohydrate

الوصف: BackgroundExercise is primarily sustained by energy derived from lipids (plasma free fatty acids and intramuscular triglycerides), and glucose (plasma glucose and muscle glycogen). Substrate utilization is the pattern by which these fuel sources are used during activity. There are many factors that influence substrate utilization. We aim to delineate the effect of exercise intensity and body composition on substrate utilization. ObjectiveThe objective of our study was to discern the differences in substrate utilization profiles during a maximal and submaximal graded exercise test, and to determine the extent to which body composition influences substrate utilization during the exercise tests. MethodsA total of 27 male athletes, 32.5 +/- 11 years of age, were recruited for this study. Body composition was analyzed using a bioelectrical impedance analyzer. Maximal and submaximal exercise tests were performed on a treadmill. A novel graded submaximal treadmill protocol was used for the submaximal test. ResultsAverage percent body fat (PBF) was 15.8 +/- 5%. Average maximal oxygen consumption (VO(2)max) was 47.6 +/- 9 mL/kg/min, while the average exercise intensity (percent VO(2)max) at which participants were shifting to glucose predominance for energy during the maximal and submaximal tests were 76 +/- 8.3% and 58.4 +/- 21.1%, respectively. A paired-samples t-test was conducted to compare percent VO(2)max at crossover point in maximal and submaximal graded exercise tests. There was a significant difference in percent VO(2)max at the crossover point for maximal (76 +/- 8.3%) and submaximal (58 +/- 21.1%) tests (t = 4.752, p = 0.001). A linear regression was performed to elucidate the interaction between exercise intensity at the crossover point and body composition during a maximal and submaximal graded exercise test. There was a significant effect of PBF on percent VO(2)max at crossover point during the maximal graded exercise test [F(1,24) = 9.10, P = 0.006] with an R-2 of 0.245. However, there was no significant ...

وصف الملف: application/pdf

العلاقة: 854451; http://hdl.handle.net/10919/111183Test; https://doi.org/10.3389/fpsyg.2022.854451Test; 13

الإتاحة: https://doi.org/10.3389/fpsyg.2022.854451Test
http://hdl.handle.net/10919/111183Test

المؤلفون: Stanzione, Joseph R., Brooks, George A., Bruneau, Michael L., French, Duncan N., Nasser, Jennifer A., Smith, Sinclair A., Volpe, Stella L.

المصدر: Research outputs 2022 to 2026

مصطلحات موضوعية: crossover point, oxygen consumption, Medicine and Health Sciences, Sports Sciences

الوصف: Introduction/Purpose: The crossover point occurs during exercise when one transitions energy substrates from fat to carbohydrate predominance. The crossover point varies in an intensity-dependent manner; however, less is known about its specificity in sports with varying metabolic demands. The purpose of our study was to determine if various sports yield differences in the time to crossover and heart rate and percentage of maximal oxygen consumption (V O2max) at crossover during a standardized exercise protocol. Methods: A total of 77 athletes (39 women, 38 men; 39.1 + 10.4 yr of age) were measured for respiratory exchange ratio during a modified Taylor V O2max treadmill test. Sports included running (n = 20), triathlon (n = 20), rowing (n = 20), and CrossFit (n = 17). A one-way ANOVA determined differences in time to crossover. A Kruskal–Wallis test was applied to determine differences between sport types for percent V O2max and heart rate at crossover. Bonferroni correction procedures were used to control the family-wise error rate and maintain alpha levels at P < 0.05. Results: Average time to crossover for all athletes was 3:43 + 1:12 min. Times to crossover for runners, triathletes, rowers, and CrossFit athletes were 4:16 + 0:58, 3:28 + 1:08, 4:00 + 1:23, and 3:01 + 0:58 min, respectively. Significant differences were observed between groups for time to crossover (P = 0.007) and percent V O2max at crossover (P = 0.01). Pairwise analyses revealed that runners had a significantly longer time to crossover compared with CrossFit athletes (P = 0.009). Triathletes’ percent V O2max at crossover was significantly lower than rowers (P = 0.04) and runners (P = 0.04). Conclusions: We found significant differences in time to crossover between runners and CrossFit athletes, which suggests that substrate use may be dependent on sport type.

وصف الملف: application/pdf

العلاقة: https://ro.ecu.edu.au/ecuworks2022-2026/2457Test; https://ro.ecu.edu.au/context/ecuworks2022-2026/article/3457/viewcontent/Sport_Specific_Crossover_Point_Differences.pdfTest

الإتاحة: https://doi.org/10.1249/TJX.0000000000000206Test
https://ro.ecu.edu.au/ecuworks2022-2026/2457Test
https://ro.ecu.edu.au/context/ecuworks2022-2026/article/3457/viewcontent/Sport_Specific_Crossover_Point_Differences.pdfTest

المؤلفون: Nehring, Danielle, Bruneau, Michael, Stanzione, Joseph R., Ramadoss, Rohit K., Volpe, Stella L.

المصدر: Medicine & Science in Sports & Exercise ; volume 53, issue 8S, page 278-278 ; ISSN 1530-0315 0195-9131

الإتاحة: https://doi.org/10.1249/01.mss.0000762320.80379.d5Test

المؤلفون: Stanzione, Joseph R., Ramadoss, Rohit, Bruneau, Michael L., Volpe, Stella L.

المصدر: Medicine & Science in Sports & Exercise ; volume 52, issue 7S, page 755-755 ; ISSN 1530-0315 0195-9131

الإتاحة: https://doi.org/10.1249/01.mss.0000683416.02836.c4Test

المؤلفون: Ly, Kianna H., Stanzione, Joseph R., Volpe, Stella L.

المصدر: Medicine & Science in Sports & Exercise ; volume 52, issue 7S, page 1089-1089 ; ISSN 1530-0315 0195-9131

الإتاحة: https://doi.org/10.1249/01.mss.0000687504.40180.ddTest

المؤلفون: Stanzione, Joseph R., Bruneau, Michael, Volpe, Stella L.

المصدر: Medicine & Science in Sports & Exercise ; volume 51, issue 6S, page 769-769 ; ISSN 1530-0315 0195-9131

الإتاحة: https://doi.org/10.1249/01.mss.0000562793.48448.d9Test
https://journals.lww.com/00005768-201906001-02302Test

المؤلفون: Terry, Maria S., Stanzione, Joseph R., Volpe, Stella L.

المصدر: Medicine & Science in Sports & Exercise ; volume 51, issue 6S, page 296-296 ; ISSN 1530-0315 0195-9131

الإتاحة: https://doi.org/10.1249/01.mss.0000561393.00014.5dTest
https://journals.lww.com/00005768-201906001-00902Test