A timer capable of accurately recording time down to the millisecond.
 
Specifications:
Dimensions6 ⅜" x 4 ¼" x 1 ⅝"
Weight7lbs
Power SupplyAA battery x 1


Research Articles:

Jordan, S., Okonek, A. & Schot, P. (2016). Influence of Baseball Catcher Mask Design, Impact Location and Ball Trajectory on Head Acceleration. International Journal of Exercise Science, 9(5), 567-575.

Ringenbach, S. R., Albert, A. R., Chih-Chia (JJ), C. & Alberts, J. L. (2014). Acute Bouts of Assisted Cycling Improves Cognitive and Upper Extremity Movement Functions in Adolescents With Down Syndrome. Intellectual & Developmental Disabilities, 52(2), 124-135. doi:10.1352/1934-9556-52.2.124

Veligekas, P. & Bogdanis, G. C. (2013). Bilateral deficit in vertical jumping in pre-pubertal boys and girls. Journal of Physical Education & Sport, 13(1), 120-126.

With its long running time, high accuracy and reliability, this device indicates the tempo with its loud tick.
 

Research Articles:

Cider, Å., Schaufelberger, M., Sunnerhagen, K. S. & Andersson, B. (2003). Hydrotherapy—a new approach to improve function in the older patient with Fotiadou, E. G., Tsimaras, V. K., Giagazoglou, P. F., Sidiropoulou, M. P., Karamouzi, A. M., & Angelopoulou, N. A. (2006). EFFECT OF RHYTHMIC

Fotiadou, E. G., Tsimaras, V. K., Giagazoglou, P. F., Sidiropoulou, M. P., Karamouzi, A. M. & Angelopoulou, N. A. (2006). Effect of Rhythmic Gymnastics on the Rhythm Perception of Children with Deafness. Journal of Strength and Conditioning Research, 20(2), 298-303. doi:10.1519/00124278-200605000-00011
Designed to time and count events with high accuracy and high resolution, with terminal blocks for easy connection to external devices including Photoelectric Rotary Pursuit, Stability Platform and Automatic Tally Maze.
 
Specifications:
Range0 - 1000s with millisecond resolution
Max Count Rate40Hz
Accuracy0.005% +/- 1millisecond
Power Supply"C" cell x 4
Battery LifeApprox.30 hours


Research Articles:

Dick, M. B., Hsieh, S., Bricker, J. & Dick-Muehlke, C. (2003). Facilitating acquisition and transfer of a continuous motor task in healthy older adults and patients with Alzheimer's disease. Neuropsychology, 17(2), 202-212. doi:10.1037/0894-4105.17.2.202

Green, J. T. & Woodruff-Pak, D. S. (1997). Concurrent eyeblink classical conditioning and rotary pursuit performance: Implications for independent nondeclarative memory systems. Neuropsychology, 11(4), 474-487. doi:10.1037/0894-4105.11.4.474

Yuhua, L., Coleman, D., Ransdell, M., Coleman, L. & Irwin, C. (2011). Sport Stacking Activities in School Children's Motor Skill Development. Perceptual & Motor Skills, 113(2), 431-438.

For measuring hand grip strength in kilogram with counting function.

For measuring the distance and the number of steps during walking with indication of estimated calories consumption.
 
Specifications:
Measurement Range0 to 99,999 steps
Memoryprevious 7 days
Dimensions2 ½"(W) x 1 ½"(H) x 1"(D)
Power SupplyLR43 battery x 1
Weight0.85oz (including battery)


Research Articles:

Dwyer, T., Pezic, A., Sun, C., Cochrane, J., Venn, A., Srikanth, V. & Ponsonby, A. (2015). Objectively Measured Daily Steps and Subsequent Long Term All-Cause Mortality: The Tasped Prospective Cohort Study. Plos One, 10(11). doi:10.1371/journal.pone.0141274

Laslett, L. L., Quinn, S. J., Winzenberg, T. M., Sanderson, K., Cicuttini, F. & Jones, G. (2012). A prospective study of the impact of musculoskeletal pain and radiographic osteoarthritis on health related quality of life in community dwelling older people. BMC Musculoskeletal Disorders, 13(1). doi:10.1186/1471-2474-13-168

Ohta, Y., Kawano, Y., Minami, J., Iwashima, Y., Hayashi, S., Yoshihara, F. & Nakamura, S. (2015). Effects of daily walking on office, home and 24-h blood pressure in hypertensive patients. Clinical and Experimental Hypertension, 37(5), 433-437. doi:10.3109/10641963.2015.1013115

A dual timer featuring a lap time/spilt time memory function.
 
Research Articles:
Dewhurst, S., Nelson, N., Dougall, P. K. & Bampouras, T. M. (2014). Scottish Country Dance: Benefits to Functional Ability in Older Women. Journal of Aging & Physical Activity, 22(1), 146-153.

Lockie, R. G., Jalilvand, F., Callaghan, S. J., Jeffriess, M. D. & Murphy, A. J. (2015). Interaction between Leg Muscle Performance and Sprint Acceleration Kinematics. Journal of Human Kinetics, 49(1), 65-74.

This device tracks performance in a wide range of sports, including basketball, football, tennis, handball, etc. and measures sprint force, cut force, changes in direction, jump height, reaction time and game duration.
 
Specifications:
Data Memory5 hours
Dimensions66(H) x 38(W) x 14(D)mm
Power SupplyCR2032 or CR2031H x 1
Battery Life5 months
Weight22g


Research Articles:

Dallinga, J. M., Mennes, M., Alpay, L., Bijwaard, H. & Faille-Deutekom, M. B. (2015). App use, physical activity and healthy lifestyle: a cross sectional study. BMC Public Health, 15(1). doi:10.1186/s12889-015-2165-8

Stackpool, C. M., Porcari, J. P., Mikat, R. P., Gillette, C. & Foster, C. (2014). The accuracy of various activity trackers in estimating steps taken and energy expenditure. Journal of Fitness Research, 3(3), 32.