Physiological Implications Of Petit Allegro As A Pre-activity Warm Up

Abstract

PURPOSE: The purpose of this study was to examine if 30 seconds of petit allegro as sautés induced physiological changes that aid in preparing dancers for activity. METHODS: Ten females (age = 20.9 ± 2.18 years) participated. Subjects sat at rest for five minutes (Pre). At rest, glucose and lactate levels were collected via finger pricking. Subjects completed 30 seconds of petit allegro. Glucose and lactate data were immediately collected during recovery. Throughout the entire trial, VO2 and VCO2 data were collected. Muscle oxygenation of the left and right gastrocnemii were monitored and analyzed as the average of three different time periods (0-5 min post, 5-10 min post, 10-15 min post). RESULTS: Repeated measures ANOVA (RM ANOVA) for time indicated that there was a significant increase in lactate (F = 14.1935, p = 0.0003) with significant increases between Pre and Post 5 minutes (p = 0.0008, pre 1.93 ± 1.46 mmol vs 3.91 ± 1.64 mmol) and between Pre and Post 10 (p = 0.0112, pre 1.93 ± 1.46 mmol vs 3.81 ± 1.52 mmol). RM ANOVA for time indicated a significant difference in VO2 (F = 13.3375, p = 0.0003). Significant increases were found between Pre and During (p < 0.001, 0.228 ± 0.053 L O2*min-1 vs 0.511 ± 0.187 L O2*min-1) as well as between Pre and Post (p = 0.002, 0.228 ± 0.053 L O2*min-1 vs 0.460 ± 0.106 L O2*min-1). RM ANOVA for RER indicated a significant main effect of time (F = 18.5607, p = 0.001). Significant increased were found between Pre and Post (p < 0.001, 0.843 ± 0.046 vs 1.147 ± 0.154). RM ANOVA revealed a significant main effect of time for minute ventilation (F = 10.0896, p = 0.0065). No individual time points were significantly different (p > 0.05). No significant differences were noted for time for blood glucose (F = 0.7383, p = 0.4918). Differences by time for left muscle oxygenation (F = 3.1185, p = 0.0239), with pre being significantly different from post (0-5 min) (p = 0.0170, pre: 67.29 ± 14.22 , post (0-5 min): 48.35 ± 24.61), and post (0-5 min) being different from post (5-10 min) (p = 0.0100, post 1 48.35 ± 24.61, post (5-10 min) 68.91 ± 9.54) and post (10-15 min) (p = 0.0220, post 1 48.35 ± 24.61, post (10-15 min) 73.20 ± 12.79). No differences were noted for right muscle oxygenation (F = 2.009, p = 0.1093). CONCLUSION: Petit allegro elicits some desirable characteristics of warm-up such as increased VO2 and minute ventilation.