RESUMEN
Sports massage provided before an activity is called pre-event massage. The hypothesized effects of pre-event massage include injury prevention, increased performance, and the promotion of a mental state conducive to performance. However, evidence with regard to the effects of pre-event massage is limited and equivocal. The exact manner in which massage produces its hypothesized effects also remains a topic of debate and investigation. This randomized single-blind placebo-controlled crossover design compared the immediate effects of pre-event massage to a sham intervention of detuned ultrasound. Outcome measures included isokinetic peak torque assessments of knee extension and flexion; salivary flow rate, cortisol concentration, and α-amylase activity; mechanical detection thresholds (MDTs) using Semmes-Weinstein monofilaments and mood state using the Profile of Mood States (POMS) questionnaire. This study showed that massage before activity negatively affected subsequent muscle performance in the sense of decreased isokinetic peak torque at higher speed (p < 0.05). Although the study yielded no significant changes in salivary cortisol concentration and α-amylase activity, it found a significant increase in salivary flow rate (p = 0.03). With the massage intervention, there was a significant increase in the MDT at both locations tested (p < 0.01). This study also noted a significant decrease in the tension subscale of the POMS for massage as compared to placebo (p = 0.01). Pre-event massage was found to negatively affect muscle performance possibly because of increased parasympathetic nervous system activity and decreased afferent input with resultant decreased motor-unit activation. However, psychological effects may indicate a role for pre-event massage in some sports, specifically in sportspeople prone to excessive pre-event tension.
Asunto(s)
Traumatismos en Atletas/prevención & control , Rendimiento Atlético/psicología , Contracción Isométrica , Masaje/métodos , Deportes/fisiología , Rendimiento Atlético/fisiología , Estudios Cruzados , Ejercicio Físico/fisiología , Ejercicio Físico/psicología , Femenino , Humanos , Masculino , Fatiga Muscular , Relajación Muscular/fisiología , Músculo Esquelético/diagnóstico por imagen , Músculo Esquelético/fisiología , Psicofisiología , Método Simple Ciego , Deportes/psicología , Factores de Tiempo , Ultrasonografía , Adulto JovenRESUMEN
OBJECTIVE: The purpose of this study was to investigate the immediate effects of head-neck massage on heart rate variability (HRV), mood states, and pressure pain thresholds (PPTs) in patients with chronic tension-type headache (CTTH). METHODS: Eleven patients (8 females), between 20 and 68 years old, with CTTH participated in this crossover study. Patients received either the experimental treatment (massage protocol) or a placebo intervention (detuned ultrasound). Holter electrocardiogram recordings (standard deviation of the normal-to-normal interval, square root of mean squared differences of successive NN intervals, index HRV, low-frequency component, and high-frequency component), PPT over both temporalis muscles, and Profile of Mood States questionnaire (tension-anxiety, depression-dejection, anger-hostility, vigor, fatigue, confusion) were obtained preintervention, immediately after intervention, and 24 hours postintervention. Self-reported head pain was also collected preintervention and 24 hours postintervention. Separate analyses of covariance (ANCOVAs) were performed with each dependent variable. The hypothesis of interest was group x time interaction. RESULTS: The ANCOVA showed a significant group x time interaction for index HRV (F = 4.5, P = .04), but not for standard deviation of the normal-to-normal interval (F = 1.1, P = .3), square root of mean squared differences of successive NN intervals (F = 0.9, P = .3), low-frequency component (F = 0.03, P = .8), or high-frequency component (F = 0.4, P = .5) domains. Pairwise comparisons found that after the manual therapy intervention, patients showed an increase in the index HRV (P = .01) domain, whereas no changes were found after the placebo intervention (P = .7). The ANCOVA also found a significant group x time interaction for tension-anxiety (F = 5.3, P = .03) and anger-hostility (F = 4.6, P = .04) subscales. Pairwise comparisons found that after the manual therapy intervention, patients showed a decrease in tension-anxiety (P = .002) and anger-hostility (P = .04) subscales, whereas no changes were found after the placebo intervention (P > .5 both subscales). No significant changes were found in PPT levels (right F = 0.3, P = .6, left F = 0.4, P = .5). A significant group x time interaction for pain (F = 4.8, P = .04) was identified. No influence of sex was found (F = 1.5, P = .3). Pairwise comparisons showed that head pain (numerical pain rating scale) decreased 24 hours after manual therapy (P < .05) but not after the placebo intervention (P = .9). CONCLUSIONS: The application of a single session of manual therapy program produces an immediate increase of index HRV and a decrease in tension, anger status, and perceived pain in patients with CTTH.