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Table 8 Acceleration metrics of included studies

From: The Quantification of Acceleration Events in Elite Team Sport: a Systematic Review

Acceleration/deceleration metric

Unit of measure

Metric definition

% of studies featuring metric

Reference

Counts

Counts (number)

Efforts in respective threshold band

62.9%

[7, 13, 17, 34, 36,37,38,39,40, 42,43,44, 47,48,49,50, 52, 54, 55, 57, 59, 60, 62, 64,65,66, 69,70,71,72, 76,77,78,79,80, 88,89,90, 92, 94,95,96,97,98,99, 101,102,103, 105,106,107,108,109,110,111,112,113, 116, 117, 119, 120, 122,123,124, 126,127,128, 136,137,138,139,140,141, 144,145,146,147,148]

[36,37,38,39, 51, 53, 56, 59, 63, 66, 69, 71, 73, 74, 84,85,86, 88, 89, 101,102,103, 108, 109, 112,113,114,115, 118, 121,122,123,124, 129, 130, 137, 138, 140]

Counts (number) per minute

Efforts in respective threshold band with respect to activity time

31.7%

Counts (absolute and relative)

Overall absolute and relative count contribution to review

71.8%

Distance

Metres

Acc/Dec distance attained in respective threshold band

13.7%

[7, 32, 33, 35, 40, 41, 45, 57, 67, 68, 79, 87, 93, 113, 125, 142, 143]

Per minute

Distance in respective threshold band with respect to activity time and threshold

3.3%

[84,85,86, 121]

Per hour

Distance attained in respective threshold band

0.8%

[46]

Acceleration

m s− 2

Intensity metric of any magnitude of acc over given analysis period.

6.7%

[7, 70, 78, 91, 93, 100, 131, 138]

Deceleration

m s−2

Intensity metric of any magnitude of dec over given analysis period.

4.2%

[7, 47, 70, 78, 100]

Acceleration Density Index

Avg Acc/Dec per 10 m; m s

Average acceleration performed per 10 m of distance covered (Acceleration Load/Distance)

0.8%

[45]

Acceleration Load

Total Acc/Dec; m s−2

Sum of acceleration values across the analysed period

Average absolute value of all acc/dec data relative to a defined period.

Absolute value multiplied by defined duration to convert to load metric

0.8%

[45]

AU

0.8%

[135]

Average Accel/Decel

(m s−2)

Absolute acceleration/deceleration values averaged across the specified period

9.2%

[6, 7, 9,10,11, 45, 58, 61, 81,82,83]

Time

Seconds

Time in respective threshold band

4.2%

[7, 75, 93, 104, 113]

% time

Time spent as a percentage in respective threshold band

0.8%

[84]

% time per minute

Percentage time spent in respective threshold band with respect to activity time and threshold

1.7%

[85, 86]

Minutes per count

Efforts in respective threshold band with respect to activity time

2.5%

[132,133,134]

Ratio of Dec:Acc

Ratio

Dec:Acc

Duration of Dec (High) and Dec (Mod) divided by total Acc time (High + Mod) in each period.

0.8%

[104]