Differences in Body Composition, Resting Metabolic Rate, and Sleep Quality Following a 6-Week Protein Supplementation Intervention in Collegiate Dancers
Additional Funding Sources
The project described was supported by a student grant from the UI Office of Undergraduate Research.
Abstract
Dancers are often under pressure to maintain a lean physique; therefore it is common to observe unhealthy dieting behaviors leading to inadequate caloric intake and protein (PRO), which may negatively alter body composition (BC). PURPOSE: To assess collegiate dancers' dietary intake, BC, resting metabolic rate (RMR), and total sleep (TS) following a 6-week PRO intervention. METHODS: Dancers (N = 18; ages 20.2 ± 1.8yrs), were randomly assigned to a control (CON; N=6), moderate PRO (MPRO; N=7; 40g/d), or high PRO group (HPRO; N=5; 90g/d). Diet was assessed using 24-hour recall. BC, RMR, and TS were assessed pre and post intervention. BC index (BCI=(LMpost-LMpre)+(FMpre-FMpost)) was used to assess BC changes. Statistical analyses were completed using SPSS Statistics (v.24), data were reported as mean ± SD, and significance was accepted at p<0.05. RESULTS: BCI was positive for all groups, (CON:1.8 ± 2.3, MPRO: 2.1 ± 2.7, HPRO 0.7 ± 1.2), MPRO being the most positive. RMR decreased from pre to post testing (CON: -140.1 ± 108.8 kcal/day; MPRO: -86.8 ± 144.5 kcal/day; HPRO: -98.4 ± 95.5 kcal/day), with CON significant at p=0.045. TS also decreased from pre to post testing (CON: -85.3 ± 39.0min; MPRO: -24.9 ± 42.1min; HPRO: -14.6 ± 24.7min) with CON significant at p=0.003. CONCLUSION: The PRO intervention showed overall positive BC changes among all three groups. BCI indicates that MPRO had more positive BC changes than CON and HPRO which indicates that high PRO consumption is not necessary to see improvements in BC.
Differences in Body Composition, Resting Metabolic Rate, and Sleep Quality Following a 6-Week Protein Supplementation Intervention in Collegiate Dancers
Dancers are often under pressure to maintain a lean physique; therefore it is common to observe unhealthy dieting behaviors leading to inadequate caloric intake and protein (PRO), which may negatively alter body composition (BC). PURPOSE: To assess collegiate dancers' dietary intake, BC, resting metabolic rate (RMR), and total sleep (TS) following a 6-week PRO intervention. METHODS: Dancers (N = 18; ages 20.2 ± 1.8yrs), were randomly assigned to a control (CON; N=6), moderate PRO (MPRO; N=7; 40g/d), or high PRO group (HPRO; N=5; 90g/d). Diet was assessed using 24-hour recall. BC, RMR, and TS were assessed pre and post intervention. BC index (BCI=(LMpost-LMpre)+(FMpre-FMpost)) was used to assess BC changes. Statistical analyses were completed using SPSS Statistics (v.24), data were reported as mean ± SD, and significance was accepted at p<0.05. RESULTS: BCI was positive for all groups, (CON:1.8 ± 2.3, MPRO: 2.1 ± 2.7, HPRO 0.7 ± 1.2), MPRO being the most positive. RMR decreased from pre to post testing (CON: -140.1 ± 108.8 kcal/day; MPRO: -86.8 ± 144.5 kcal/day; HPRO: -98.4 ± 95.5 kcal/day), with CON significant at p=0.045. TS also decreased from pre to post testing (CON: -85.3 ± 39.0min; MPRO: -24.9 ± 42.1min; HPRO: -14.6 ± 24.7min) with CON significant at p=0.003. CONCLUSION: The PRO intervention showed overall positive BC changes among all three groups. BCI indicates that MPRO had more positive BC changes than CON and HPRO which indicates that high PRO consumption is not necessary to see improvements in BC.