Vocal Warm-Ups
Many singers engage in some form of daily routine or warm-up prior to singing; however, many singers do not know the rationale behind choosing various warm-ups or their actual function. Unfortunately, these questions also elude researchers. A study by Elliott, Sundberg, & Gramming (1995) attempted to determine if vocal warm-ups prior to singing yielded the same effect as warming up other parts of the body, i.e., increasing blood flow to muscles thereby decreasing their thickness and increasing their pliability. Although the results of this study were inconclusive as to the exact effect of vocal warm-ups, several reasons still support the use of vocal warm-ups. Elliott, Sundberg, & Gramming emphasized that changing pitch undoubtedly stretches the muscles. They also noted that many singers subjectively indicated improved vocal functioning following warm-ups.
Warm-ups should not be confused with vocalises. Warm-ups, as in weight training, are used to stretch the muscles to prepare them for work without injury. Vocalises are tasks aimed at acquiring a particular skill, i.e., the actual exercise itself. For example, some schools of thought encourage simple, quiet glides across the range as an effective warm-up. On the other hand, using a staccato (short) "ha-ha-ha" on 1-3-5 of a scale is to encourage onset and flexibility. Many singers will use a variety of vowels, consonants, or arpeggios to "warm" the voice; however, these techniques may actually be encouraging articulatory precision or vowel balancing as in rapid "me-may-mah-mo-mu," or balancing "registers" as in sung single vowels on 1-5-6-5-1, etc.
Vocal Cool-Downs
Although unfortunately and frequently ignored, vocal cool-downs may also be used to prevent damage to the vocal cords. During speaking and singing, blood flow to the larynx is increased. Stopping immediately after prolonged speaking or singing may contribute to a pooling of blood in the larynx, weighing the vocal cords down. Damage may result as one attempts to speak on these potentially swollen folds. An analogy can be drawn to other physical exercise. After running for prolonged periods of time, an athlete is encouraged to walk for several minutes to maintain blood flow and prevent cramping. The same propensity for "cramping" may apply to laryngeal activity. The simple practice of gentle, relaxed humming can serve as an excellent form of cooling-down.
Friday, January 11, 2008
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