Spinstrap

WITTMAN SPINSTRAPS

WITTMAN-SPINS has developed a solution for the many problems caused by heavy instruments and traditional straps. It’s called the SPINSTRAP system and it’s designed for guitars, basses, saxes and bassoons.

spinguitarstrap

How does it work?

Direct attachment to the center of gravity area of the instrument perfectly balances the instrument and divides its weight evenly between the two ends of the strap.

Right shoulder position increases the mechanical advantage of the neck muscles by counteracting the torque created by the weight of the instrument. This enhances the respective lever-arms ratio.

Breadth of the strap decreases pressure on the shoulder by increasing contact area.

Why do I need a different strap?

Much has been written about back and neck pain in general, especially in occupations prone to sustained and distorted postures, as well as cumulative trauma. Musicians as a group fall into this category.

A 1989 Study by Dr. F. J. Bejjani of New York University’s Human Performance Analysis Laboratory documents that more than 70% of musicians suffer with back and shoulder problems due to their instruments’ Static and Dynamic Loading on the Human Musculoskeletal System.

spinsaxstrap

What proof is there that the Wittman SPINSTRAP makes a difference?

The Medical Research supports what players have been telling us for years. One physiological and biomechanical evaluation of the SPINSTRAP was conducted by Dr. E. R. Buskirk and Joseph L. Loomis, P. I. at the Noll Laboratory for Human Performance of Penn State University.

The study compared the SPINSTRAP to conventional straps with regard to force and pressure distribution on the shoulder and back, electromyograph activity of selected muscles, and even heart rate. Overall improvement in all these parameters was noted when using the SPINSTRAP as shown in the graphs below. (1)

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Additional research beyond the Penn State Study was completed by Dr. F. J. Bejjani, President of MEDART USA and Director of New York University’s Human Performance Laboratory after using the SPINSTRAP clinically with patients with significant success. (2)

Data collected were analyzed with the APAS, the very same system used by NASA for Human Performance Analysis on all Space Shuttle Flights. Maximum EMG RMS values were obtained for each of the data samples (see Table 2). Each subject was their own control. As the table shows, the strap effect was significant, with the data clearly showing lower EMC readings with the SPINSTRAP as compared to conventional straps.

Using the SPINSTRAP, muscle activity is reduced by 54% on the left side and 70% on the right side, compared to using a conventional strap.

spinpop2

(1) Loomis, J: Use of the SPINSTRAP and conventional straps while exercising with a guitar: A physiological and biomechanical evaluation. Unpublished final report, May 1992.
(2) Bejjani, F. J.: Occupational disorders of performing artists: Diagnosis and treatment. In DeLisa, J. et at. (eds.): Rehabilitation Medicine: Principles and Practice. Philadelphia, PA: J. B. Lippincott Co. (in press).

Wittman SPINSTRAP Model 570
$129.95 + $7.00 S&H ($38 foreign)
The complete system for Guitar and Bass. Includes a parallel output jack, all hardware, adjustable padded strap with quick release and mounting instructions.

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Wittman SPINSTRAP Model 570N
$89.95 + $7.00 S&H ($38 foreign)
Same as Model 570 but unwired (no parallel output).

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Wittman SPINSTRAP Model 700
$39.95 + $7.00 S&H ($38 foreign)
The SaxStrap for saxes and bassoon.

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