Gastroenterol Res

Gastroenterology Research, ISSN 1918-2805 print, 1918-2813 online, Open Access

Article copyright, the authors; Journal compilation copyright, Gastroenterol Res and Elmer Press Inc

Journal website http://www.gastrores.org

Original Article

Volume 11, Number 6, December 2018, pages 411-415

Influence of Body Height on Oral and Pharyngeal Transit Time of a Liquid Bolus in Healthy Volunteers

Figure 1. Pharyngeal transit time (PTT) and pharyngeal clearance (PC) in women (mean height: 166 cm) and men (mean height: 177 cm) after swallows of 10 mL liquid bolus. Horizontal bars represent the mean. *P = 0.02 vs. women.

Figure 2. Correlation of height with pharyngeal transit time (PTT) of the individuals included in the investigation (N = 40).

**Table 1.** Oral and Pharyngeal Bolus Transit Duration (Milliseconds) in Shorter Men and Women (Mean Height: 1.62 m, N = 20) and Taller Men and Women (Mean Height: 1.81 m, N = 20), After Swallowing of 10 mL Liquid Barium Bolus
	Shorter	Taller	P value
OTT: oral transit time; PTT: pharyngeal transit time; PC: pharyngeal clearance; UESO: upper esophageal sphincter opening; HM: hyoid movement; OPTT: oral-pharyngeal transit time; CI: confidence interval.
OTT	716	641 - 790	857	730 - 984	0.62
PTT	276	249 - 304	329	275 - 385	0.09
PC	522	475 - 569	564	502 - 626	0.06
UESO	345	321 - 370	363	332 - 393	0.29
HM	853	751 - 955	902	820 - 985	0.23
OPTT	1,024	921 - 1,127	1,169	1,038 - 1,301	0.38

Table 1. Oral and Pharyngeal Bolus Transit Duration (Milliseconds) in Shorter Men and Women (Mean Height: 1.62 m, N = 20) and Taller Men and Women (Mean Height: 1.81 m, N = 20), After Swallowing of 10 mL Liquid Barium Bolus

Shorter

Taller

P value

Mean

95% CI

Mean

95% CI

OTT: oral transit time; PTT: pharyngeal transit time; PC: pharyngeal clearance; UESO: upper esophageal sphincter opening; HM: hyoid movement; OPTT: oral-pharyngeal transit time; CI: confidence interval.

OTT

716

641 - 790

857

730 - 984

0.62

PTT

276

249 - 304

329

275 - 385

0.09

522

475 - 569

564

502 - 626

0.06

UESO

345

321 - 370

363

332 - 393

0.29

853

751 - 955

902

820 - 985

0.23

OPTT

1,024

921 - 1,127

1,169

1,038 - 1,301

0.38

**Table 2.** Oral and Pharyngeal Bolus Transit Duration (Milliseconds) in Shorter (Mean Height: 1.66 m, N = 10) and Taller (Mean Height: 1.87 m, N = 10) Men, After Swallows of 10 mL Liquid Barium Bolus
	Shorter	Taller	P value
OTT: oral transit time; PTT: pharyngeal transit time; PC: pharyngeal clearance; UESO: upper esophageal sphincter opening; HM: hyoid movement; OPTT: oral-pharyngeal transit time; CI: confidence interval.
OTT	753	646 - 859	592	456 - 727	0.03
PTT	336	296 - 376	400	197 - 503	0.21
PC	625	559 - 691	617	500 - 735	0.33
UESO	395	358 - 431	387	333 - 441	0.71
HM	912	729 - 1,094	875	776 - 974	0.77
OPTT	1,083	962 - 1,204	1,001	843 - 1,159	0.58

Table 2. Oral and Pharyngeal Bolus Transit Duration (Milliseconds) in Shorter (Mean Height: 1.66 m, N = 10) and Taller (Mean Height: 1.87 m, N = 10) Men, After Swallows of 10 mL Liquid Barium Bolus

Shorter

Taller

P value

Mean

95% CI

Mean

95% CI

OTT

753

646 - 859

592

456 - 727

0.03

PTT

336

296 - 376

400

197 - 503

0.21

625

559 - 691

617

500 - 735

0.33

UESO

395

358 - 431

387

333 - 441

0.71

912

729 - 1,094

875

776 - 974

0.77

OPTT

1,083

962 - 1,204

1,001

843 - 1,159

0.58

**Table 3.** Oral and Pharyngeal Bolus Transit Duration (Milliseconds) in Shorter (Mean Height: 1.57 m, N = 10) and Taller (Mean Height: 1.74 m, N = 10) Women, After Swallows of 10 mL Liquid Barium Bolus
	Shorter	Taller	P value
OTT: oral transit time; PTT: pharyngeal transit time; PC: pharyngeal clearance; UESO: upper esophageal sphincter opening; HM: hyoid movement; OPTT: oral-pharyngeal transit time; CI: confidence interval.
OTT	678	570 - 787	1,122	949 - 1,296	0.04
PTT	217	192 - 242	259	232 - 287	0.11
PC	419	377 - 461	510	468 - 553	0.02
UESO	296	274 - 318	338	311 - 366	0.12
HM	794	693 - 895	930	792 - 1,067	0.05
OPTT	965	793 - 1,137	1,338	1,138 - 1,538	0.04

Table 3. Oral and Pharyngeal Bolus Transit Duration (Milliseconds) in Shorter (Mean Height: 1.57 m, N = 10) and Taller (Mean Height: 1.74 m, N = 10) Women, After Swallows of 10 mL Liquid Barium Bolus

Shorter

Taller

P value

Mean

95% CI

Mean

95% CI

OTT

678

570 - 787

1,122

949 - 1,296

0.04

PTT

217

192 - 242

259

232 - 287

0.11

419

377 - 461

510

468 - 553

0.02

UESO

296

274 - 318

338

311 - 366

0.12

794

693 - 895

930

792 - 1,067

0.05

OPTT

965

793 - 1,137

1,338

1,138 - 1,538

0.04

**Table 4.** Spearman’s Correlation Coefficient (r) Between Height and Swallowing Duration in Men (N = 20) and Women (N = 20) With Swallowing of 10 mL Liquid Bolus
	Men	Women	All
OTT: oral transit time; PTT: pharyngeal transit time; PC: pharyngeal clearance; UESO: upper esophageal sphincter opening; HM: hyoid movement; OPTT: oral-pharyngeal transit time.
OTT	-0.22	0.35	0.63	0.01	0.07	0.68
PTT	-0.05	0.84	0.45	0.04	0.40	0.01
PC	-0.36	0.12	0.13	0.58	0.07	0.68
UESO	-0.16	0.49	0.38	0.10	0.19	0.25
HM	-0.10	0.68	0.37	0.10	0.22	0.17
OPTT	0.11	0.66	0.69	0.01	0.22	0.16

Table 4. Spearman’s Correlation Coefficient (r) Between Height and Swallowing Duration in Men (N = 20) and Women (N = 20) With Swallowing of 10 mL Liquid Bolus

Men

Women

All

P value

OTT: oral transit time; PTT: pharyngeal transit time; PC: pharyngeal clearance; UESO: upper esophageal sphincter opening; HM: hyoid movement; OPTT: oral-pharyngeal transit time.

OTT

-0.22

0.35

0.63

0.01

0.07

0.68

PTT

-0.05

0.84

0.45

0.04

0.40

0.01

-0.36

0.12

0.13

0.58

0.07

0.68

UESO

-0.16

0.49

0.38

0.10

0.19

0.25

-0.10

0.68

0.37

0.10

0.22

0.17

OPTT

0.11

0.66

0.69

0.01

0.22

0.16