Triaxial Accelerometry to Evaluate Walking Efficiency in Older Subjects

Iwashita, Soh; Takeno, Yoshiaki; Okazaki, Kazunobu; Itoh, Junpei; Kamijo, Yoshi‐ichiro; Masuki, Shizue; Yanagidaira, Yasunori; Nosé, Hiroshi

doi:10.1249/01.mss.0000089350.54959.cb

Cited by 35 publications

(29 citation statements)

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“…Walking at submaximal velocity could be one such regimen. We found that the heart rate (HR) in older men and women walking at the maximal velocity almost reached the age-expected maximal values, 3 suggesting that V · O 2peak would be increased in older people if walking training was performed at a higher intensity than that recommended by current guidelines. 2 Furthermore, we recently observed that cycling exercise training at moderate to high intensity increased thigh muscle strength and mass in older men, 4,5 suggesting that, like traditional resistance training, aerobic exercise training, if performed at the required intensity, can increase thigh muscle strength in older people.…”

mentioning

confidence: 79%

“…They were told to repeat the following regimen 4 or more times per week: 5 or more sets of 2-to 3-minute low-intensity walking intervals (at approximately 40% of the pretraining V · O 2peak ), followed by a 3-minute interval of high-intensity walking (>70% but <85% V · O 2peak for walking). The intensity and steps were monitored with a triaxial accelerometer carried on the back (Active Tracer 301, GMS, Tokyo, Japan) 3 and a pedometer, respectively. A beeping signal alerted participants when a change of intensity was scheduled.…”

Section: Participants and Methodsmentioning

confidence: 99%

“…At the same time, 3-dimensional acceleration and HR with the electrocardiogram were measured at 10-millisecond intervals and recorded with 5-second memories as averaged values. 3 The total impulse from an accelerometer 7 was transferred to a computer and converted to oxygen consumption rate using a previously reported equation. 3 Peak aerobic capacity and peak HR for walking values are those for the last 30 seconds at maximal walking velocity.…”

Section: Measurementsmentioning

confidence: 99%

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Effects of High-Intensity Interval Walking Training on Physical Fitness and Blood Pressure in Middle-Aged and Older People

Nemoto

Genno

Masuki

et al. 2008

Obstetrical &Amp; Gynecological Survey

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KEN-ICHI NEMOTO, MS; HIROKAZU GEN-NO, PHD; SHIZUE MASUKI, PHD; KAZUNOBU OKAZAKI, PHD; AND HIROSHI NOSE, MD, PHD OBJECTIVE: To examine whether high-intensity interval walking training increased thigh muscle strength and peak aerobic capacity and reduced blood pressure more than moderateintensity continuous walking training. From May 18, 2004, to October 15, 2004 (5-month study period), 60 men and 186 women with a mean ± SD age of 63±6 years were randomly divided into 3 groups: no walking training, moderate-intensity continuous walking training, and high-intensity interval walking training. Participants in the moderate-intensity continuous walking training group were instructed to walk at approximately 50% of their peak aerobic capacity for walking, using a pedometer to verify that they took 8000 steps or more per day for 4 or more days per week. Those in the high-intensity interval walking training group, who were monitored by accelerometry, were instructed to repeat 5 or more sets of 3-minute low-intensity walking at 40% of peak aerobic capacity for walking followed by a 3-minute high-intensity walking above 70% of peak aerobic capacity for walking per day for 4 or more days per week. Isometric knee extension and flexion forces, peak aerobic capacity for cycling, and peak aerobic capacity for walking were all measured both before and after training. PARTICIPANTS AND METHODS: RESULTS:The targets were met by 9 of 25 men and 37 of 59 women in the no walking training group, by 8 of 16 men and 43 of 59 women in the moderate-intensity continuous walking training group, and by 11 of 19 men and 31 of 68 women in the highintensity interval walking training group. In the high-intensity interval walking training group, isometric knee extension increased by 13%, isometric knee flexion by 17%, peak aerobic capacity for cycling by 8%, and peak aerobic capacity for walking by 9% (all, P<.001), all of which were significantly greater than the increases observed in the moderate-intensity continuous walking training group (all, P<.01). Moreover, the reduction in resting systolic blood pressure was higher for the high-intensity interval walking training group (P=.01).CONCLUSION: High-intensity interval walking may protect against age-associated increases in blood pressure and decreases in thigh muscle strength and peak aerobic capacity.

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confidence: 79%

Section: Participants and Methodsmentioning

confidence: 99%

Section: Measurementsmentioning

confidence: 99%

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Effects of High-Intensity Interval Walking Training on Physical Fitness and Blood Pressure in Middle-Aged and Older People

Nemoto

Genno

Masuki

et al. 2008

Obstetrical &Amp; Gynecological Survey

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“…Additionally, individuals randomised to a training group used the JD Mate's training function which, based on tri-axial accelerometry, estimates training-derived energy expenditure [26]. Furthermore, all training sessions were performed with a heart rate monitor (Polar RS400; Polar, Kempele, Finland).…”

Section: Interventionsmentioning

confidence: 99%

Mechanisms behind the superior effects of interval vs continuous training on glycaemic control in individuals with type 2 diabetes: a randomised controlled trial

et al. 2014

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Aims/hypothesis By use of a parallel and partly crossover randomised, controlled trial design we sought to elucidate the underlying mechanisms behind the advantageous effects of interval walking training (IWT) compared with continuous walking training (CWT) on glycaemic control in individuals with type 2 diabetes. We hypothesised that IWT, more than CWT, would improve insulin sensitivity including skeletal muscle insulin signalling, insulin secretion and disposition index (DI).Methods By simple randomisation (sequentially numbered, opaque sealed envelopes), eligible individuals (diagnosed with type 2 diabetes, no exogenous insulin treatment) were allocated to three groups: a control group (CON, n=8), an IWT group (n=12) and an energy expenditure-matched CWT group (n=12). Training groups were prescribed free-living training, five sessions per week (60 min/session). A threestage hyperglycaemic clamp, including glucose isotope tracers and skeletal muscle biopsies, was performed before and after a 4 month intervention in a hospitalised setting. No blinding was performed. Results The improved glycaemic control, which was only seen in the IWT group, was consistent with IWT-induced increases in insulin sensitivity index (49.8 ± 14.6%; p<0.001), peripheral glucose disposal (14.5±4.9%; p<0.05) and DI (66.2±21.8%; p<0.001), with no changes in the CWT or CON group. Moreover, only IWT improved insulin signalling in skeletal muscle via increased insulin-stimulated phosphorylation of AS160 (29.0±10.8%; p<0.05). No changes were seen in insulin secretion during hyperglycaemia alone, hyperglycaemia + glucagon-like peptide 1 infusion or arginine injection. Conclusions/interpretation IWT maintains insulin secretion and improves insulin sensitivity and DI, in contrast to energy expenditure-matched CWT. These results suggest that training with alternating intensity, and not just training volume and mean intensity, is a key determinant of changes in whole body glucose disposal in individuals with type 2 diabetes. Trial registration: ClinicalTrials (NCT01234155).

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“…) ，ターンを伴うことで，ターンの仕方の違いがテスト成績に影響する可能性が示されている (Grant et al, 1995;St Clair Gibson et al, 1998 (Bouten et al, 1994;Eston et al, 1998;Nichols et al, 1999;Fudge et al, 2007) ，歩行や走行の動作特性の評価 (Iwashita et al, 2003;Le Bris et al, 2006;Fudge et al, 2007;Rowlands et al, 2007) ，活動の分類 (Bonomi et al, 2009) ，ボートの動作特性の評価(中村，2007)などがある．Bonomi et al …”

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Evaluation of running characteristics during shuttle running with a triaxial accelerometer

Yoshida¹,

Takahashi²,

Chiba³

et al. 2013

Japan Journal of Physical Education, Health and Sport Sciences

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AbstractDiŠerences in sports training lead to diŠerences in the style of turn, and these aŠect the turn technique during the multistage 20-m shuttle run test. The purpose of this study was to determine running characteristics during the multistage 20-m shuttle run test with a triaxial accelerometer. Four male rugby players, four male long-distance runners, and three untrained males undertook two tasks: a shuttle running task (SRT), which has the same protocol as the multistage 20-m shuttle running test, and a treadmill running task (TRT), which has the same ratio of speed increase and duration time as the multistage 20-m shuttle running test. Anterior-posterior, vertical, and medial-lateral acceleration were measured using a triaxial accelerometer worn on the right side of the hip. A linear mixed model (LMM) with three factors (task, group, and velocity) was used to analyze the running characteristics in diŠerent sports. Anterior-posterior and medial-lateral outputs in the SRT were signiˆcantly higher than those in the TRT ( P＝.011; P＝.003, respectively); by contrast, there was no signiˆcant diŠerence in vertical output ( P＝.534). Because the interactions of task and group in anterior-posterior and medial-lateral outputs were signiˆcant, LMMs with two factors (task and velocity) in anterior-posterior and medial-lateral outputs were used in each group to analyze the eŠect of turn techniques. Anterior-posterior and mediallateral outputs were increased in the SRT. Anterior-posterior output may re‰ect changes in the speed of turn and medial-lateral output may re‰ect cutting movements in the turn. Additionally, whereas both anterior-posterior and medial-lateral acceleration were increased in rugby players, only medial-lateral acceleration was increased in long-distance runners and anterior-posterior acceleration was increased in untrained males. These results indicate that data obtained using a triaxial accelerometer re‰ect running characteristics during the multistage 20-m shuttle run test.Key words20-m shuttle run test,ˆeld test, endurance, accelerometer キーワード20 m シャトルランテスト，フィールドテスト，持久力，加速度センサ

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Triaxial Accelerometry to Evaluate Walking Efficiency in Older Subjects

Abstract: These results suggest that increased Fmax improved walking efficiency by increasing energy utilization in the anterior-posterior/mediolateral directions while decreasing energy loss in the vertical direction.

Cited by 35 publications

References 14 publications

Effects of High-Intensity Interval Walking Training on Physical Fitness and Blood Pressure in Middle-Aged and Older People

Effects of High-Intensity Interval Walking Training on Physical Fitness and Blood Pressure in Middle-Aged and Older People

Mechanisms behind the superior effects of interval vs continuous training on glycaemic control in individuals with type 2 diabetes: a randomised controlled trial

Evaluation of running characteristics during shuttle running with a triaxial accelerometer

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