Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2015) 14, 708 - 715

Research article
Validity and Reproducibility of an Incremental Sit-To-Stand Exercise Test for Evaluating Anaerobic Threshold in Young, Healthy Individuals
Keisuke Nakamura1,2, , Masayoshi Ohira3, Yoshiharu Yokokawa3, Yuya Nagasawa1
Author Information
1 Department of Rehabilitation, Matsumoto City Hospital, Matsumoto, Nagano, Japan
2 Department of Health Sciences, Graduate School of Medicine, Shinshu University, Matsumoto, Japan
3 Department of Physical Therapy, School of Health Sciences, Shinshu University, Matsumoto, Japan

Keisuke Nakamura
✉ Department of Rehabilitation, Matsumoto City Hospital, 4417-180 Hata, Matsumoto, Nagano,390-1401, Japan
Email: keipons55@yahoo.co.jp
Publish Date
Received: 08-04-2015
Accepted: 28-07-2015
Published (online): 24-11-2015
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ABSTRACT

Sit-to-stand exercise (STS) is a common activity of daily living. The objectives of the present study were: 1) to assess the validity of aerobic fitness measurements based on anaerobic thresholds (ATs), during incremental sit-to-stand exercise (ISTS) with and without arm support compared with an incremental cycle-ergometer (CE) test; and 2) to examine the reproducibility of the AT measured during the ISTSs. Twenty-six healthy individuals randomly performed the ISTS and CE test. Oxygen uptakes at the AT (AT-VO2) and heart rate at the AT (AT-HR) were determined during the ISTSs and CE test, and repeated-measures analyses of variance and Tukey’s post-hoc test were used to evaluate the differences between these variables. Pearson correlation coefficients were used to assess the strength of the relationship between AT-VO2 and AT-HR during the ISTSs and CE test. Data analysis yielded the following correlations: AT-VO2 during the ISTS with arm support and the CE test, r = 0.77 (p < 0.05); AT-VO2 during the ISTS without arm support and the CE test, r = 0.70 (p < 0.05); AT-HR during the ISTS with arm support and the CE test, r = 0.80 (p < 0.05); and AT-HR during the ISTS without arm support and the CE test, r = 0.66 (p < 0.05). The AT-VO2 values during the ISTS with arm support (18.5 ± 1.9 mL·min-1·kg-1) and the CE test (18.4 ± 1.8 mL·min-1·kg-1) were significantly higher than those during the ISTS without arm support (16.6 ± 1.8 mL·min-1·kg-1; p < 0.05). The AT-HR values during the ISTS with arm support (126 ± 10 bpm) and the CE test (126 ± 13 bpm) were significantly higher than those during the ISTS without arm support (119 ± 9 bpm; p < 0.05). The ISTS with arm support may provide a cardiopulmonary function load equivalent to the CE test; therefore, it is a potentially valid test for evaluating AT-VO2 and AT-HR in healthy, young adults.

Key words: Sit-to-stand, cycle ergometer, anaerobic threshold, correlations, reproducibility, validity


           Key Points
  • The ISTS is a simple test that varies only according to the frequency of standing up, and requires only a small space and a chair.
  • The ISTS with arm support is valid and reproducible, and is a safe test for evaluating AT in healthy young adults.
  • For evaluating the AT, the ISTS may serve as a valid alternative to conventional CPX, using either a cycle ergometer or treadmill, in cases where the latter methods are difficult to implement.
 
 
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